{"id":30546,"date":"2023-03-05T01:12:41","date_gmt":"2023-02-22T11:06:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php8-1%e3%80%91php8-1%e7%9a%84%e6%96%b0%e5%8a%9f%e8%83%bd\/"},"modified":"2025-08-12T19:42:22","modified_gmt":"2025-08-12T11:42:22","slug":"%e3%80%90php8-1%e3%80%91php8-1%e7%9a%84%e6%96%b0%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php8-1%e3%80%91php8-1%e7%9a%84%e6%96%b0%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u3010PHP8.1\u3011PHP8.1\u7684\u65b0\u529f\u80fd"},"content":{"rendered":"

PHP8.2 \/ PHP8.1 \/ PHP8.0 \/ PHP7.4 \u53ef\u9009\u62e9\u7684 PHP \u7248\u672c\u3002<\/p>\n

2021\u5e7411\u670826\u65e5\u53d1\u884c<\/p>\n

2021\u5e747\u670820\u65e5\uff0cPHP8.1 \u8fdb\u5165\u4e86\u7279\u6027\u51bb\u7ed3\u9636\u6bb5\u3002
\n\u8fd9\u610f\u5473\u7740\u4e0e\u7f16\u7a0b\u8bed\u8a00\u529f\u80fd\u76f8\u5173\u7684\u6dfb\u52a0\u548c\u4fee\u6539\u5df2\u7ecf\u622a\u6b62\u3002
\n\u5728\u63a5\u4e0b\u6765\u7684\u65e5\u5b50\u91cc\u6211\u4eec\u5c06\u4e0d\u65ad\u8fdb\u884c\u8c03\u8bd5\uff0c\u63d0\u9ad8\u7248\u672c\u7684\u5b8c\u5584\u5ea6\uff0c
\n\u8ba1\u5212\u4e8e2021\u5e7411\u670825\u65e5\u53d1\u5e03 PHP8.1.0 \u7248\u672c\u3002<\/p>\n

\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u5373\u5c06\u5728PHP8.1\u4e2d\u5b9e\u65bd\u7684RFC\u3002<\/p>\n

RFC\u662f\u201c\u8bf7\u6c42\u8bc4\u8bba\u201d\uff0c\u5b83\u662f\u4e00\u79cd\u5173\u4e8e\u4e92\u8054\u7f51\u6807\u51c6\u3001\u534f\u8bae\u6216\u65b9\u6cd5\u7684\u6587\u4ef6\u3002<\/p>\n

\u7ea4\u7ef4\u901a\u8fc7\u4e86\uff0c50\u4eba\u8d5e\u6210\uff0c14\u4eba\u53cd\u5bf9\u3002<\/p>\n

\u5149\u7ea4\u3002<\/p>\n

\u4f60\u5c06\u80fd\u591f\u5728PHP\u4e2d\u7f16\u5199\u5f02\u6b65\u4ee3\u7801\u3002<\/p>\n

$fiber<\/span> =<\/span> new<\/span> Fiber<\/span>(<\/span>function<\/span> ():<\/span> void<\/span> {<\/span>\r\n    $value<\/span> =<\/span> Fiber<\/span>::<\/span>suspend<\/span>(<\/span>'fiber'<\/span>);<\/span>\r\n    echo<\/span> \"\u30ec\u30b8\u30e5\u30fc\u30e0\u3057\u305f\u3002<\/span>$value<\/span>: \"<\/span>,<\/span> $value<\/span>,<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n});<\/span>\r\n\r\n$value<\/span> =<\/span> $fiber<\/span>-><\/span>start<\/span>();<\/span>\r\n\r\necho<\/span> \"\u4e00\u6642\u505c\u6b62\u3057\u305f\u3002<\/span>$value<\/span>: \"<\/span>,<\/span> $value<\/span>,<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span>\r\n\r\n$fiber<\/span>-><\/span>resume<\/span>(<\/span>'test'<\/span>);<\/span>\r\n\r\n\/\/ \u5b9f\u884c\u7d50\u679c<\/span>\r\n\u4e00\u6642\u505c\u6b62\u3057\u305f<\/span>\u3002<\/span>$value<\/span>:<\/span> fiber<\/span>\r\n\u30ec\u30b8\u30e5\u30fc\u30e0\u3057\u305f<\/span>\u3002<\/span>$value<\/span>:<\/span> test<\/span>\r\n<\/code><\/pre>\n
\u5728\u4e8b\u4ef6\u5faa\u73af\u4e2d\uff0c\u50cf Promise \u8fd9\u6837\u7684\u5904\u7406\uff0c\u5230\u76ee\u524d\u4e3a\u6b62\u5728 PHP \u4e2d\u662f\u56f0\u96be\u7684\uff0c\u4f46\u7ec8\u4e8e\u53ef\u4ee5\u7f16\u5199\u4e86\u3002
\n\u57fa\u672c\u4e0a\u8fd9\u4e0d\u662f\u4e3a\u4e00\u822c\u7528\u6237\u800c\u8bbe\u8ba1\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u9700\u8981\u7b49\u5f85\u5e93\u7684\u652f\u6301\uff0c\u4f46 PHP \u4f3c\u4e4e\u4e5f\u53ef\u4ee5\u7f16\u5199\u975e\u963b\u585e\u7684\u4ee3\u7801\u4e86\u3002<\/p>\n
\u7eaf\u4ea4\u53c9\u7c7b\u578b\u4ee530\u7968\u8d5e\u6210\u30013\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u901a\u8fc7\u4e86\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u4ea4\u53c9\u578b\u3002<\/p>\n
\u7ee7PHP8.0\u65b0\u589e\u4e86UNION\u7c7b\u578b\u4e4b\u540e\uff0c\u4ea4\u53c9\u7c7b\u578b\u4e5f\u53ef\u4f9b\u4f7f\u7528\u3002<\/p>\n
class<\/span> A<\/span> {<\/span>\r\n    \/\/ UNION\u578b $a\u306fTraversable\u3082\u3057\u304f\u306fCountable\u3067\u3042\u308b<\/span>\r\n    private<\/span> Traversable<\/span>|<\/span>Countable<\/span> $a<\/span>;<\/span>\r\n\r\n    \/\/ \u4ea4\u5dee\u578b $b\u306fTraversable\u304b\u3064Countable\u3067\u3042\u308b<\/span>\r\n    private<\/span> Traversable<\/span>&<\/span>Countable<\/span> $b<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u73b0\u5728\u4f60\u53ef\u4ee5\u81ea\u7531\u5730\u5236\u4f5c\u4efb\u610f\u6570\u91cf\u7684\u62fc\u56fe\u4e86\uff0c\u662f\u5427\u3002<\/p>\n
\u5217\u4e3e\u4ee544\u7968\u8d5e\u6210\uff0c7\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u5217\u4e3e\u7c7b\u578b\u3002<\/p>\n
enum<\/span> Suit<\/span> {<\/span>\r\n  case<\/span> Hearts<\/span>;<\/span>\r\n  case<\/span> Diamonds<\/span>;<\/span>\r\n  case<\/span> Clubs<\/span>;<\/span>\r\n  case<\/span> Spades<\/span>;<\/span>\r\n}<\/span>\r\n\r\n$val<\/span> =<\/span> Suit<\/span>::<\/span>Diamonds<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u9996\u5148\uff0cENUM\u5df2\u88ab\u5b9e\u73b0\uff0c\u4f46\u6700\u521d\u7684RFC\u65e8\u5728\u6700\u7ec8\u5b9e\u73b0\u4ee3\u6570\u6570\u636e\u7c7b\u578b\u7684\u5e9e\u5927\u8ba1\u5212\u3002<\/p>\n
\u7531\u4e8eENUM\u7c7b\u662f\u5efa\u7acb\u5728\u7c7b\u7684\u57fa\u7840\u4e0a\u7684\uff0c\u5b83\u53ef\u4ee5\u72ec\u7acb\u5730\u5b9e\u73b0\u65b9\u6cd5\uff0c\u56e0\u6b64\u53ef\u4ee5\u8fdb\u884c\u76f8\u5f53\u590d\u6742\u7684\u6784\u5efa\u3002<\/p>\n
\u6211\u4e2a\u4eba\u4ece\u672a\u9047\u5230\u8fc7\u6ca1\u6709ENUM\u800c\u65e0\u6cd5\u89e3\u51b3\u7684\u60c5\u51b5\uff0c\u6240\u4ee5\u5bf9\u5176\u6709\u591a\u5927\u7528\u5904\u5e76\u4e0d\u6e05\u695a\uff0c\u4f46\u662f\u81ea\u53e4\u4ee5\u6765\uff0c\u5df2\u7ecf\u591a\u6b21\u5c1d\u8bd5\u5728PHP\u4e2d\u5b9e\u73b0ENUM\uff0c\u53ef\u89c1\u9700\u6c42\u80af\u5b9a\u5f88\u5927\u3002<\/p>\n
\u65e0\u8fd4\u56de\u7c7b\u578b42\u7968\u8d5e\u6210\uff0c11\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u6c38\u8fdc\u7684\u3002<\/p>\n
function<\/span> foo<\/span>():<\/span>never<\/span>{<\/span>\r\n    exit<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u67d0\u4e9b\u4f1a\u4e2d\u9014\u9000\u51fa\u6216\u59cb\u7ec8\u629b\u51fa\u5f02\u5e38\u7684\u3001\u65e0\u6cd5\u8fd4\u56de\u7ed9\u8c03\u7528\u8005\u7684\u51fd\u6570\u4e2d\uff0c\u5c06\u6dfb\u52a0\u4e00\u79cd\u540d\u4e3anever\u7684\u7c7b\u578b\u4f5c\u4e3a\u8fd4\u56de\u503c\u3002<\/p>\n
\u53ea\u8bfb\u5c5e\u6027 2.0
\n\u53ea\u8bfb\u8bbf\u95ee\u4fee\u9970\u7b26\u3002<\/p>\n
class<\/span> Test<\/span> {<\/span>\r\n    public<\/span> readonly<\/span> string<\/span> $prop<\/span>;<\/span>\r\n\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>string<\/span> $prop<\/span>)<\/span> {<\/span>\r\n        $this<\/span>-><\/span>prop<\/span> =<\/span> $prop<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n$test<\/span> =<\/span> new<\/span> Test<\/span>(<\/span>\"foobar\"<\/span>);<\/span>\r\n\r\n\/\/ \u8aad\u307f\u8fbc\u307f\u306fOK<\/span>\r\nvar_dump<\/span>(<\/span>$test<\/span>-><\/span>prop<\/span>);<\/span> \/\/ string(6) \"foobar\"<\/span>\r\n\r\n\/\/ \u66f8\u304d\u8fbc\u307f\u306fNG<\/span>\r\n$test<\/span>-><\/span>prop<\/span> =<\/span> \"foobar\"<\/span>;<\/span> \/\/ Error: Cannot modify readonly property Test::$prop<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u662f\u4e00\u4e2a\u80fd\u591f\u5728\u4e00\u6b21\u521d\u59cb\u5316\u540e\u4fdd\u8bc1\u4e0d\u4f1a\u518d\u88ab\u6539\u53d8\u7684\u5c5e\u6027\u3002\u4f7f\u7528protected\u6216private\u7684\u7406\u7531\u4e2d\u670998%\u662f\u56e0\u4e3a\u5e0c\u671b\u5176\u53ef\u88ab\u8bfb\u53d6\u4f46\u4e0d\u53ef\u88ab\u5199\u5165\uff0c\u800c\u8fd9\u4e2a\u5c5e\u6027\u80fd\u591f\u89e3\u51b3\u8fd9\u79cd\u7528\u4f8b\u3002<\/p>\n
\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c\u73b0\u5728\u53ef\u4ee5\u5c06\u4e0a\u8ff0Test\u7c7b\u7701\u7565\u6210\u8fd9\u6837\u7b80\u6d01\u7684\u5199\u6cd5\u3002<\/p>\n
class<\/span> Test<\/span> {<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>public<\/span> readonly<\/span> string<\/span> $prop<\/span>)<\/span> {}<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f03\u7528\u9690\u5f0f\u975e\u6574\u6570\u517c\u5bb9\u7684\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u6574\u6570\u4ee529\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u88ab\u63a5\u53d7\u3002<\/p>\n
\u4ecefloat\u5230int\u7684\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u4f1a\u89e6\u53d1E_DEPRECATED\u8b66\u544a\u3002<\/p>\n
\u57fa\u672c\u4e0a\uff0c\u5f9eint\u5230float\u6216\u5f9efloat\u5230string\u7684\u8f49\u63db\u4e0d\u6703\u6709\u4fe1\u606f\u640d\u5931\u3002
\n\u7136\u800c\uff0c\u5f9efloat\u5230int\u7684\u8f49\u63db\u5c31\u4e0d\u662f\u9019\u6a23\u3002<\/p>\n
function<\/span> toInt<\/span>(<\/span>int<\/span> ...<\/span>$arg<\/span>){<\/span>\r\n    var_dump<\/span>(<\/span>$arg<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfunction<\/span> toFloat<\/span>(<\/span>float<\/span> ...<\/span>$arg<\/span>){<\/span>\r\n    var_dump<\/span>(<\/span>$arg<\/span>);<\/span>\r\n}<\/span>\r\n\r\nfunction<\/span> toString<\/span>(<\/span>string<\/span> ...<\/span>$arg<\/span>){<\/span>\r\n    var_dump<\/span>(<\/span>$arg<\/span>);<\/span>\r\n}<\/span>\r\n\r\ntoInt<\/span>(<\/span>1<\/span>,<\/span> '1'<\/span>,<\/span> 1.5<\/span>,<\/span> '1.5'<\/span>);<\/span>    \/\/ [1, 1, 1, 1]<\/span>\r\ntoFloat<\/span>(<\/span>1<\/span>,<\/span> '1'<\/span>,<\/span> 1.5<\/span>,<\/span> '1.5'<\/span>);<\/span>  \/\/ [1, 1, 1.5, 1.5]<\/span>\r\ntoString<\/span>(<\/span>1<\/span>,<\/span> '1'<\/span>,<\/span> 1.5<\/span>,<\/span> '1.5'<\/span>);<\/span> \/\/ ['1', '1', '1.5', '1.5']<\/span>\r\n<\/code><\/pre>\n
\u53ea\u6709\u5728\u8f6c\u6362\u4e3a’int’\u65f6\u4e22\u5931\u4e86\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u5c06\u6765\u5c06\u53d1\u51fa\u6709\u5173\u8fd9\u79cd\u9690\u5f0f\u8f6c\u6362\u7684\u8b66\u544a\u3002<\/p>\n
\u5bf9\u4e8e\u660e\u786e\u7684\u8f6c\u6362\u90e8\u5206\uff0c\u4f8b\u5982(int)1.5\u6216intval(1.5)\uff0c\u53ef\u4ee5\u50cf\u4ee5\u524d\u4e00\u6837\u987a\u5229\u5730\u8fdb\u884c\u8f6c\u6362\uff0c\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n
\u7136\u800c\uff0c\u5373\u4f7f\u73b0\u5728\u6dfb\u52a0\u4e86declare(strict_types=1)\uff0c\u8fd9\u4e2a\u8f6c\u6362\u4e5f\u4f1a\u5bfc\u81f4TypeError\uff0c\u5728\u4e25\u683c\u7684\u5199\u6cd5\u4e0b\u4e5f\u4e0d\u4f1a\u6709\u4efb\u4f55\u5f71\u54cd\u3002<\/p>\n
\u6700\u7ec8\u7c7b\u7684\u5e38\u91cf\u4ee529\u7968\u8d5e\u6210\u30014\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2afinal\u7c7b\u7684\u5e38\u91cf\u3002<\/p>\n
class<\/span> FOO<\/span>{<\/span>\r\n    final<\/span> public<\/span> const<\/span> HOGE<\/span> =<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4f60\u5c06\u80fd\u591f\u7f16\u5199\u4e00\u4e2a\u5728\u7ee7\u627f\u7684\u7c7b\u4e2d\u4fdd\u8bc1\u65e0\u6cd5\u88ab\u91cd\u65b0\u66f4\u6539\u7684\u5e38\u91cf\u3002<\/p>\n
\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u6211\u4eec\u73b0\u5728\u53ef\u4ee5\u5728\u7c7b\u3001\u65b9\u6cd5\u548c\u5e38\u91cf\u4e0a\u4f7f\u7528final\u5173\u952e\u5b57\u3002
\n\u4e0d\u80fd\u5728\u5c5e\u6027\u4e0a\u4f7f\u7528\uff0c\u4f46\u662f\u4e0a\u8ff0\u7684readonly\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u5f88\u597d\u7684\u66ff\u4ee3\u54c1\u3002<\/p>\n
\u521d\u59cb\u5316\u5668\u4e2d\u7684\u65b0\u529f\u80fd
\n\u4ee543\u7968\u8d5e\u6210\u548c2\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u901a\u8fc7\u63a5\u53d7\u3002<\/p>\n
\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u6765\u8fdb\u884c\u5b9e\u4f8b\u5316\u3002<\/p>\n
class<\/span> Test<\/span> {<\/span>\r\n\t\/\/ PHP8.0\u307e\u3067<\/span>\r\n    private<\/span> Logger<\/span> $logger<\/span>;<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>\r\n        ?Logger<\/span> $logger<\/span> =<\/span> null<\/span>,<\/span>\r\n    ){<\/span>\r\n        $this<\/span>-><\/span>logger<\/span> =<\/span> $logger<\/span> ??<\/span> new<\/span> NullLogger<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n\t\/\/ PHP8.1\u4ee5\u964d<\/span>\r\n    public<\/span> function<\/span> __construct<\/span>(<\/span>\r\n        private<\/span> Logger<\/span> $logger<\/span> =<\/span> new<\/span> NullLogger<\/span>,<\/span>\r\n    ){}<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4ee5\u524d\uff0c\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u53ea\u80fd\u662f\u6807\u91cf\u503c\uff0c\u56e0\u6b64\u6211\u4eec\u4e0d\u5f97\u4e0d\u4f7f\u7528\u4e00\u79cd\u4e0d\u592a\u81ea\u7136\u7684\u65b9\u6cd5\uff0c\u5373\u5728\u65b9\u6cd5\u5185\u90e8\u63a5\u6536null\u5e76\u8fdb\u884c\u5206\u652f\u5224\u65ad\u3002\u4f46\u73b0\u5728\uff0c\u53ef\u4ee5\u81ea\u7136\u5730\u7f16\u5199\u8fd9\u4e2a\u529f\u80fd\u3002<\/p>\n
\u4f7f\u7528\u5b57\u7b26\u4e32\u952e\u8fdb\u884c\u6570\u7ec4\u89e3\u5305\u4ee550\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f\u5173\u4e8e\u5b57\u7b26\u4e32\u952e\u5bf9\u5e94\u7684\u6570\u7ec4\u89e3\u5305\u3002<\/p>\n
PHP7.4\u5b9e\u73b0\u4e86\u901a\u8fc7\u89e3\u5305\u6765\u5408\u5e76\u6570\u7ec4\u7684\u529f\u80fd\u3002<\/p>\n
$array1<\/span> =<\/span> [<\/span>10<\/span>=><\/span>1<\/span>,<\/span> 2<\/span>];<\/span>\r\n$array2<\/span> =<\/span> [<\/span>10<\/span>=><\/span>3<\/span>,<\/span> 4<\/span>];<\/span>\r\n\r\n$array<\/span> =<\/span> [<\/span>...<\/span>$array1<\/span>,<\/span> ...<\/span>$array2<\/span>];<\/span> \/\/ [1, 2, 3, 4]<\/span>\r\n<\/code><\/pre>\n
\u4e0earray_merge\u51fd\u6570\u6216\u6570\u7ec4\u5408\u5e76\u4e0d\u540c\u7684\u662f\uff0c\u8fd9\u53ea\u662f\u7b80\u5355\u5730\u6309\u987a\u5e8f\u8fde\u63a5\u6240\u6709\u5143\u7d20\uff0c\u540c\u65f6\u952e\u4e5f\u4f1a\u4ece0\u91cd\u65b0\u5f00\u59cb\u5206\u914d\u3002<\/p>\n
\u65e2\u7136\u5bc6\u94a5\u4f1a\u91cd\u65b0\u751f\u6210\uff0c\u5374\u4e0d\u77e5\u4e3a\u4f55\u6ca1\u6709\u5bf9\u5b57\u7b26\u5bc6\u94a5\u8fdb\u884c\u652f\u6301\u3002<\/p>\n
$array1<\/span> =<\/span> [<\/span>'a'<\/span>=><\/span>1<\/span>,<\/span> 2<\/span>];<\/span>\r\n$array2<\/span> =<\/span> [<\/span>'a'<\/span>=><\/span>3<\/span>,<\/span> 4<\/span>];<\/span>\r\n\r\n$array<\/span> =<\/span> [<\/span>...<\/span>$array1<\/span>,<\/span> ...<\/span>$array2<\/span>];<\/span> \/\/ Fatal Error: Cannot unpack array with string keys<\/span>\r\n<\/code><\/pre>\n
\u6211\u4eec\u5c06\u5bf9\u6b64\u8fdb\u884c\u6539\u8fdb\uff0c\u4ee5\u4f7f\u5176\u80fd\u591f\u901a\u8fc7\u5b57\u7b26\u4e32\u952e\u8fdb\u884c\u6570\u7ec4\u89e3\u5305\u3002<\/p>\n
\u53ea\u6709\u5728\u5b57\u7b26\u952e\u4e0a\uff0c\u4f3c\u4e4e\u4e0d\u4f1a\u91cd\u65b0\u7ed9\u952e\u6392\u5e8f\uff0c\u800c\u662f\u5c06\u76f8\u540c\u7684\u952e\u8fdb\u884c\u8986\u76d6\u3002<\/p>\n
$array1<\/span> =<\/span> [<\/span>'a'<\/span>=><\/span>1<\/span>,<\/span> 2<\/span>];<\/span>\r\n$array2<\/span> =<\/span> [<\/span>'a'<\/span>=><\/span>3<\/span>,<\/span> 4<\/span>];<\/span>\r\n\r\n$array<\/span> =<\/span> [<\/span>...<\/span>$array1<\/span>,<\/span> ...<\/span>$array2<\/span>];<\/span> \/\/ ['a'=>3, 2, 4]<\/span>\r\n<\/code><\/pre>\n
\u597d\u50cf\u4e0d\u662f [1, 2, 3, 4]\u3002
\n\u4e0d\u592a\u6e05\u695a\u5462\u3002<\/p>\n
\u5f03\u7528\u5c06\u7a7a\u503c\u4f20\u9012\u7ed9\u5185\u90e8\u51fd\u6570\u7684\u975e\u7a7a\u53c2\u6570
\n\u4ee546\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u5c06\u4f20\u9012\u7ed9\u4e0d\u63a5\u53d7 null \u503c\u7684\u5185\u90e8\u51fd\u6570\u7684\u53c2\u6570\u8bbe\u7f6e\u4e3a E_DEPRECATED\u3002<\/p>\n
\u4e3e\u4e2a\u4f8b\u5b50\uff0cstrlen\u7684\u7b7e\u540d\u662fstrlen(string $string): int\uff0c\u53c2\u6570\u4e0d\u53ef\u4e3a\u7a7a\u3002
\n\u7136\u800c\uff0c\u5b9e\u9645\u4e0a\u53ef\u4ee5\u6b63\u5e38\u4f20\u9012null\uff0c\u5e76\u4e14\u4e0d\u4f1a\u51fa\u9519\u3002<\/p>\n
strlen<\/span>(<\/span>null<\/span>);<\/span> \/\/ \u30a8\u30e9\u30fc\u51fa\u306a\u3044<\/span>\r\n\r\nfunction<\/span> my_strlen<\/span>(<\/span>string<\/span> $string<\/span>):<\/span> int<\/span>{<\/span>\r\n    return<\/span> strlen<\/span>(<\/span>$string<\/span>);<\/span>\r\n}<\/span>\r\nmy_strlen<\/span>(<\/span>null<\/span>);<\/span> \/\/ TypeError Argument 1 passed to my_strlen() must be of the type string, null given<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8e\u5386\u53f2\u539f\u56e0\uff0c\u5185\u90e8\u51fd\u6570\u5f80\u5f80\u5bf9\u53c2\u6570\u8fdb\u884c\u5bbd\u677e\u7684\u5224\u65ad\uff0c\u800c\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u5c06\u6b63\u786e\u5730\u4ea7\u751fTypeError\u3002
\n\u4e3a\u4e86\u89e3\u51b3\u8fd9\u79cd\u77db\u76fe\uff0c\u63d0\u51fa\u4e86\u8fd9\u4e2aRFC\u3002<\/p>\n
\u7136\u800c\uff0c\u5982\u679c\u7a81\u7136\u5f15\u53d1 TypeError \u4f1a\u9020\u6210\u6781\u5927\u6df7\u4e71\uff0c\u6240\u4ee5\u5728 PHP8.1 \u4e2d\u5c06\u5176\u8bbe\u4e3a E_DEPRECATED\uff0c\u800c\u5728 PHP9 \u6216\u4e4b\u540e\u7684\u7248\u672c\u4e2d\u5c06\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u4e0e TypeError \u8bbe\u5b9a\u4e3a\u76f8\u540c\u3002<\/p>\n
\u4e3a\u5185\u90e8\u65b9\u6cd5\u6dfb\u52a0\u8fd4\u56de\u7c7b\u578b\u58f0\u660e\u4ee517\u7968\u8d5e\u6210\uff0c7\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u88ab\u63a5\u53d7\u3002<\/p>\n
\u5728\u5185\u90e8\u7c7b\u7ee7\u627f\u65f6\uff0c\u5c06\u68c0\u67e5\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u58f0\u660e\u3002<\/p>\n
class<\/span> MyDateTime<\/span> extends<\/span> DateTime<\/span>\r\n{<\/span>\r\n    public<\/span> function<\/span> modify<\/span>(<\/span>string<\/span> $modifier<\/span>):<\/span>int<\/span>\r\n    {<\/span>\r\n        return<\/span> 1<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n$dt<\/span> =<\/span> new<\/span> MyDateTime<\/span>();<\/span>\r\n$dt<\/span>-><\/span>modify<\/span>(<\/span>'modifier'<\/span>);<\/span>\r\n<\/code><\/pre>\n
DateTime::modify\u7684\u8fd4\u56de\u503c\u662fDateTime|false\uff0c\u4f46\u662f\u5373\u4f7f\u5728\u6269\u5c55\u65f6\u5b8c\u5168\u5ffd\u7565\u5e76\u6dfb\u52a0\u4e86int\u7b49\u7c7b\u578b\uff0c\u5b83\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u4e14\u4e0d\u4f1a\u51fa\u9519\u3002
\n\u5bf9\u4e8e\u4e0d\u517c\u5bb9\u7684\u7c7b\u578b\uff0c\u5c06\u53d1\u51faE_DEPRECATED\u8b66\u544a\u3002
\n\u5728PHP9\u4e2d\uff0c\u5c06\u5bfc\u81f4TypeError\u3002<\/p>\n
\u4e0e\u4e4b\u524d\u7684RFC\u4e00\u6837\uff0c\u5185\u7f6e\u51fd\u6570\u7684\u5224\u65ad\u6761\u4ef6\u901a\u5e38\u8f83\u4e3a\u5bbd\u677e\u3002\u5982\u679c\u7ee7\u627f\u4e86\u7528\u6237\u5b9a\u4e49\u7684\u7c7b\uff0c\u90a3\u4e48\u8fd9\u6bb5\u4ee3\u7801\u81ea\u7136\u4f1a\u4ea7\u751fTypeError\u9519\u8bef\u3002<\/p>\n
\u4e00\u6d41\u7684\u53ef\u8c03\u7528\u8bed\u6cd5\u4ee544\u7968\u652f\u6301\u30010\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662fClosure::fromCallable\u7684\u65b0\u8bed\u6cd5\u3002<\/p>\n
\/\/ \u540c\u3058<\/span>\r\n$fn<\/span> =<\/span> Closure<\/span>::<\/span>fromCallable<\/span>(<\/span>'strlen'<\/span>);<\/span>\r\n$fn<\/span> =<\/span> strlen<\/span>(<\/span>...<\/span>);<\/span>\r\n\r\n\/\/ \u540c\u3058<\/span>\r\n$fn<\/span> =<\/span> Closure<\/span>::<\/span>fromCallable<\/span>([<\/span>$this<\/span>,<\/span> 'method'<\/span>]);<\/span>\r\n$fn<\/span> =<\/span> $this<\/span>-><\/span>method<\/span>(<\/span>...<\/span>)<\/span>\r\n\r\n\/\/ \u540c\u3058<\/span>\r\n$fn<\/span> =<\/span> Closure<\/span>::<\/span>fromCallable<\/span>([<\/span>Foo<\/span>::<\/span>class<\/span>,<\/span> 'method'<\/span>]);<\/span>\r\n$fn<\/span> =<\/span> Foo<\/span>::<\/span>method<\/span>(<\/span>...<\/span>);<\/span>\r\n<\/code><\/pre>\n
… \u4e0d\u662f\u7701\u7565\u7b26\u53f7\u4e4b\u7c7b\u7684\uff0c\u800c\u662f\u76f4\u63a5\u7684\u6587\u5b57\u5f62\u5f0f\u3002<\/p>\n
\u55ef\uff0c\u9019\u53ea\u662f\u4e00\u7a2e\u8868\u9762\u7684\u8a9e\u8a00\u7d50\u69cb\u800c\u5df2\u3002
\n\u9019\u6a23\u505a\u7684\u597d\u8655\u662f\u4e0d\u9700\u8981\u50b3\u8f38\u5b57\u7b26\u4e32\uff0c\u56e0\u6b64\u53ef\u4ee5\u9032\u884c\u975c\u614b\u5206\u6790\u3002<\/p>\n
\u4f46\u662f\u5982\u679c\u8fd9\u4e2a\u53e5\u5b50\u7a81\u7136\u51fa\u73b0\uff0c\u6211\u6709\u4fe1\u5fc3\u4f1a\u5c06\u5176\u8bef\u8ba4\u4e3a\u89e3\u5305\u6216\u666e\u901a\u7684\u51fd\u6570\u8c03\u7528\u800c\u611f\u5230\u56f0\u60d1\u3002<\/p>\n
\u6dfb\u52a0IntlDatePatternGenerator
\n\u4e00\u81f4\u901a\u8fc7\u5e76\u63a5\u53d7\uff0c\u8d5e\u621010\u7968\uff0c\u53cd\u5bf90\u7968\u3002<\/p>\n
\u5f15\u5165\u672c\u5730\u5316\u7684\u65e5\u671f\u683c\u5f0f\u5316\u7a0b\u5e8f\u3002<\/p>\n
$skeleton<\/span> =<\/span> \"YYYYMMdd\"<\/span>;<\/span>\r\n\r\n$today<\/span> =<\/span> \\DateTimeImmutable<\/span>::<\/span>createFromFormat<\/span>(<\/span>'Y-m-d'<\/span>,<\/span> '2021-04-24'<\/span>);<\/span>\r\n\r\n$dtpg<\/span> =<\/span> new<\/span> \\IntlDatePatternGenerator<\/span>(<\/span>\"de_DE\"<\/span>);<\/span>\r\n$pattern<\/span> =<\/span> $dtpg<\/span>-><\/span>getBestPattern<\/span>(<\/span>$skeleton<\/span>);<\/span>\r\necho<\/span> \"de: \"<\/span>,<\/span> \\IntlDateFormatter<\/span>::<\/span>formatObject<\/span>(<\/span>$today<\/span>,<\/span> $pattern<\/span>,<\/span> \"de_DE\"<\/span>),<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span> \/\/ de: 24.04.2021<\/span>\r\n\r\n$dtpg<\/span> =<\/span> new<\/span> \\IntlDatePatternGenerator<\/span>(<\/span>\"en_US\"<\/span>);<\/span>\r\n$pattern<\/span> =<\/span> $dtpg<\/span>-><\/span>getBestPattern<\/span>(<\/span>$skeleton<\/span>),<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span>\r\necho<\/span> \"en: \"<\/span>,<\/span> \\IntlDateFormatter<\/span>::<\/span>formatObject<\/span>(<\/span>$today<\/span>,<\/span> $pattern<\/span>,<\/span> \"en_US\"<\/span>),<\/span> \"<\/span>\\n<\/span>\"<\/span>;<\/span> \/\/ en: 04\/24\/2021<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u2026\u600e\u4e48\u6837\uff1f<\/p>\n
\u55ef\uff0cPHP\u7684intl\u53ea\u662f\u5c01\u88c5\u4e86ICU\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u5373\u4f7f\u8bf4\u662f\u56e0\u4e3a\u662fPHP\u800c\u4ea7\u751f\u95ee\u9898\uff0c\u6211\u4e5f\u5f88\u56f0\u60d1\u3002\u800c\u4e14\uff0cgetBestPattern\u8fd9\u4e2a\u540d\u79f0\u5b9e\u9645\u4e0a\u4e5f\u6ca1\u6709\u6539\u52a8\u3002<\/p>\n
\u7531\u4e8eintl\u4e0a\u51e0\u4e4e\u6ca1\u6709\u76f8\u5173\u4fe1\u606f\u6216\u4f7f\u7528\u793a\u4f8b\uff0c\u6240\u4ee5\u6211\u5bf9\u4e8e\u662f\u4f7f\u7528ja_JP\u6765\u8868\u793a2021\/04\/24\u8fd8\u662f\u75282021\u5e744\u670824\u65e5\u6765\u8868\u793a\u4e0d\u592a\u6e05\u695a\u3002<\/p>\n
\u589e\u52a0\u4e00\u4e2a\u51fd\u6570array_is_list(array $array)\uff0c\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\u4ee541\u7968\u8d5e\u6210\u30011\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u901a\u8fc7\u3002<\/p>\n
\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3aarray_is_list\u7684\u51fd\u6570\u3002<\/p>\n
\u53ea\u6709\u5f53\u952e\u662f\u4ee50\u5f00\u5934\u4e14\u6ca1\u6709\u9057\u6f0f\u7684\u6570\u7ec4\u65f6\uff0c\u624d\u4f1a\u4e3atrue\u3002<\/p>\n
\tarray_is_list<\/span>([<\/span>1<\/span>,<\/span> 2<\/span>]);<\/span> \/\/ true<\/span>\r\n\tarray_is_list<\/span>([<\/span>1<\/span>=><\/span>1<\/span>,<\/span> 2<\/span>]);<\/span> \/\/ false<\/span>\r\n\tarray_is_list<\/span>([<\/span>1<\/span>,<\/span> 2<\/span>=><\/span>2<\/span>]);<\/span> \/\/ false<\/span>\r\n\tarray_is_list<\/span>([<\/span>'a'<\/span>=><\/span>1<\/span>,<\/span> 2<\/span>]);<\/span> \/\/ false<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528PHP\u4e2d\u88ab\u79f0\u4e3a”\u6570\u7ec4”\u7684\u5b9e\u9645\u4e0a\u662f\u6709\u5e8f\u54c8\u5e0c\u8868\uff0c\u5e76\u4e0d\u5b58\u5728\u5176\u4ed6\u8bed\u8a00\u4e2d\u6240\u8bf4\u7684”\u6570\u7ec4”\u7684\u6982\u5ff5\u3002
\n\u901a\u8fc7\u4f7f\u7528\u6b64\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u786e\u5b9a\u5b83\u662f\u5426\u4e0e\u5176\u4ed6\u8bed\u8a00\u4e2d\u6240\u8bf4\u7684”\u6570\u7ec4”\u76f8\u540c\u3002<\/p>\n
\u5982\u679c\u60a8\u60f3\u4f7f\u7528\u7eaf\u7cb9\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528SplFixedArray\u4e4b\u7c7b\u7684\u3002\u800c\u4e14\uff0c\u5728PHP\u4e2d\uff0c\u7eaf\u7cb9\u7684\u6570\u7ec4\u548c\u5e26\u7a7a\u5143\u7d20\u7684\u6570\u7ec4\u6ca1\u6709\u533a\u522b\uff0c\u6240\u4ee5\u5728\u7528\u6237\u754c\u9762\u4e2d\u51e0\u4e4e\u6ca1\u6709\u4ec0\u4e48\u7528\u5904\u3002<\/p>\n
\u660e\u786e\u7684\u516b\u8fdb\u5236\u6574\u6570\u5b57\u9762\u91cf\u8868\u793a\u6cd5\u53d7\u523033\u4eba\u7684\u652f\u6301\u548c0\u4eba\u7684\u53cd\u5bf9\uff0c\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f\u8868\u793a\u516b\u8fdb\u5236\u6570\u7684\u57fa\u6570\u3002<\/p>\n
$a<\/span> =<\/span> 16<\/span>;<\/span>         \/\/ 10\u9032\u6570<\/span>\r\n$a<\/span> =<\/span> 0x10<\/span>;<\/span>       \/\/ 16\u9032\u6570<\/span>\r\n$a<\/span> =<\/span> 0b00010000<\/span>;<\/span> \/\/ 2\u9032\u6570<\/span>\r\n$a<\/span> =<\/span> 020<\/span>;<\/span>        \/\/ 8\u9032\u6570<\/span>\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u89e3\u51b3\u516b\u8fdb\u5236\u6570\u6ca1\u6709\u524d\u7f00\u5bfc\u81f4\u7684\u6df7\u6dc6\u95ee\u9898\uff0c\u6211\u4eec\u5c06\u652f\u6301\u4f7f\u75280o\u8868\u793a\u516b\u8fdb\u5236\u6570\u3002<\/p>\n
$a<\/span> =<\/span> 0<\/span>o20<\/span>;<\/span> \/\/ PHP8.1\u4ee5\u964dOK<\/span>\r\n<\/code><\/pre>\n
\u5173\u4e8e\u73b0\u6709\u7684\u5199\u4f5c\u65b9\u5f0f\uff0c\u6682\u65f6\u6ca1\u6709\u8ba1\u5212\u5220\u9664\u3002<\/p>\n
\u9650\u5236$GLOBALS\u7684\u4f7f\u7528
\n\u4ee548\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u4fee\u6539$GLOBALS\u5185\u90e8\u5904\u7406\u7684RFC\u3002<\/p>\n
$a<\/span> =<\/span> 1<\/span>;<\/span>\r\n$globals<\/span> =<\/span> $GLOBALS<\/span>;<\/span> \/\/ \u5024\u3092\u30b3\u30d4\u30fc<\/span>\r\n$globals<\/span>[<\/span>'a'<\/span>]<\/span> =<\/span> 2<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>$a<\/span>);<\/span> \/\/ int(2)<\/span>\r\n<\/code><\/pre>\n
\u5c3d\u7ba1\u53ea\u662f\u590d\u5236\u4e86\u503c\uff0c\u4f46\u539f\u59cb\u503c\u4e0d\u77e5\u4f55\u6545\u4e5f\u88ab\u6539\u53d8\u4e86\u3002<\/p>\n
\u6839\u636e\u8bf4\u6cd5\uff0c\u5168\u5c40\u53d8\u91cf\u4e2d\u5b58\u5728\u5404\u79cd\u7279\u6b8a\u89c4\u683c\uff0c\u5bfc\u81f4\u5185\u90e8\u7ed3\u6784\u53d8\u5f97\u590d\u6742\uff0c\u5e76\u4e14\u51fa\u73b0\u4e86\u6027\u80fd\u95ee\u9898\u3002
\n\u56e0\u6b64\uff0c\u6211\u4eec\u5e0c\u671b\u5c3d\u53ef\u80fd\u5730\u6d88\u9664\u8fd9\u4e9b\u7279\u6b8a\u89c4\u683c\u3002<\/p>\n
\u5728\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u901a\u5e38\u7684\u4f7f\u7528\u65b9\u6cd5\u57fa\u672c\u4e0a\u662f\u517c\u5bb9\u7684\uff0c\u4f46\u662f\u4f9d\u8d56\u4e8e\u53c2\u8003\u8d44\u6599\u7684\u5947\u602a\u4ee3\u7801\u4f3c\u4e4e\u65e0\u6cd5\u8fd0\u884c\u3002<\/p>\n
foreach<\/span> (<\/span>$GLOBALS<\/span> as<\/span> $var<\/span> =><\/span> $_<\/span>)<\/span> $$var<\/span> =&<\/span> $GLOBALS<\/span>[<\/span>$var<\/span>];<\/span> \/\/ \u52d5\u304b\u306a\u304f\u306a\u308b<\/span>\r\n<\/code><\/pre>\n
\u55ef\uff0c\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5728\u770b\u5230$GLOBALS\u8fd9\u4e2a\u53d8\u91cf\u65f6\uff0c\u5927\u591a\u6570\u4eba\u4f1a\u4ea7\u751f\u4e00\u79cd\u62d2\u7edd\u7684\u53cd\u5e94\u5427\u3002<\/p>\n
\u66f4\u6539\u9ed8\u8ba4\u7684mysqli\u9519\u8bef\u6a21\u5f0f\u4ee521\u7968\u8d5e\u6210\uff0c9\u7968\u53cd\u5bf9\u901a\u8fc7\u3002<\/p>\n
mysqli\u7684\u9519\u8bef\u6a21\u5f0f\u9ed8\u8ba4\u4e3a\u5f02\u5e38\u3002<\/p>\n
\u4ecePHP8.0\u5f00\u59cb\uff0c\u9ed8\u8ba4\u503c\u4e3aMYSQLI_REPORT_OFF\uff0c\u9664\u975e\u7279\u610f\u66f4\u6539\u8bbe\u7f6e\uff0c\u5426\u5219\u5b83\u4f1a\u5728\u9759\u9ed8\u4e2d\u6b7b\u673a\uff0c\u8fd9\u662f\u4e00\u4e2a\u4ee4\u4eba\u56f0\u6270\u7684\u89c4\u8303\u3002\u4ecePHP8.1\u5f00\u59cb\uff0c\u9ed8\u8ba4\u503c\u5c06\u66f4\u6539\u4e3aMYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT\u3002<\/p>\n
\u7531\u4e8e\u5728PHP8.0\u4e2d\uff0cPDO\u7684\u9519\u8bef\u6a21\u5f0f\u5df2\u66f4\u6539\u4e3a\u9ed8\u8ba4\u629b\u51fa\u5f02\u5e38\uff0c\u6240\u4ee5\u6211\u4eec\u76f8\u5e94\u5730\u505a\u4e86\u4fee\u6539\u3002<\/p>\n
\u7ed9mysqli\u6dfb\u52a0fetch_column\u65b9\u6cd5\u300218\u4eba\u8d5e\u6210\uff0c2\u4eba\u53cd\u5bf9\uff0c\u901a\u8fc7\u3002<\/p>\n
\u8fd9\u662f mysqli_result::fetch_column \u65b9\u6cd5\u3002<\/p>\n
\u7531\u4e8emysqli\u4e2d\u7f3a\u5c11fetch_column\u51fd\u6570\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u884c\u8865\u5145\uff0c\u5c3d\u7ba1\u5df2\u5b58\u5728\u8bb8\u591a\u5176\u4ed6fetch\u51fd\u6570\u3002<\/p>\n
\u5c31\u6211\u4e2a\u4eba\u800c\u8a00\uff0c\u6211\u4ece\u672a\u4f7f\u7528\u8fc7PDO\u7684fetchColumn\u65b9\u6cd5\uff0c\u4e5f\u4e0d\u592a\u7406\u89e3\u53ea\u63d0\u53d6\u4e00\u4e2a\u5217\u7684\u9700\u6c42\u3002<\/p>\n
Mysqli\u7ed1\u5b9a\u5728\u6267\u884c\u4e2d\u4ee532\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u901a\u8fc7\u4e86\u3002<\/p>\n
mysqli::execute\u65b9\u6cd5\u53ef\u4ee5\u4f20\u5165\u8fd0\u884c\u65f6\u53c2\u6570\u3002<\/p>\n
\/\/ PDO \u4e8b\u524d\u6e21\u3057<\/span>\r\n$stmt<\/span> =<\/span> $pdo<\/span>-><\/span>prepare<\/span>(<\/span>'INSERT INTO users(id, name) VALUES(?,?)'<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>bindParam<\/span>(<\/span>0<\/span>,<\/span> $id<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>bindParam<\/span>(<\/span>1<\/span>,<\/span> $name<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>execute<\/span>();<\/span>\r\n\r\n\/\/ PDO \u5b9f\u884c\u6642\u6e21\u3057<\/span>\r\n$stmt<\/span> =<\/span> $pdo<\/span>-><\/span>prepare<\/span>(<\/span>'INSERT INTO users(id, name) VALUES(?,?)'<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>execute<\/span>([<\/span>$id<\/span>,<\/span> $name<\/span>]);<\/span>\r\n\r\n\/\/ mysqli \u4e8b\u524d\u6e21\u3057<\/span>\r\n$stmt<\/span> =<\/span> $mysqli<\/span>-><\/span>prepare<\/span>(<\/span>'INSERT INTO users(id, name) VALUES(?,?)'<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>bind_param<\/span>(<\/span>'ss'<\/span>,<\/span> $id<\/span>,<\/span> $name<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>execute<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u4e3a\u4ec0\u4e48mysqli\u5728\u53c2\u6570\u6267\u884c\u65f6\u65e0\u6cd5\u63d0\u4f9b\u652f\u6301\u3002
\n\u4ecePHP8.1\u5f00\u59cb\uff0cmysqli\u5c06\u50cfPDO\u4e00\u6837\u5728\u6267\u884c\u65f6\u652f\u6301\u4f20\u53c2\u3002<\/p>\n
\/\/ mysqli \u5b9f\u884c\u6642\u6e21\u3057 PHP8.1\u4ee5\u964d<\/span>\r\n$stmt<\/span> =<\/span> $mysqli<\/span>-><\/span>prepare<\/span>(<\/span>'INSERT INTO users(id, name) VALUES(?,?)'<\/span>);<\/span>\r\n$stmt<\/span>-><\/span>execute<\/span>([<\/span>$id<\/span>,<\/span> $name<\/span>]);<\/span>\r\n<\/code><\/pre>\n
\u5728\u4e2a\u4eba\u770b\u6765\uff0c\u6211\u53ea\u4f1a\u5b8c\u5168\u4f7f\u7528PDO\uff0c\u6240\u4ee5\u5bf9mysqli\u73b0\u5728\u6dfb\u52a0\u4e86\u5404\u79cd\u529f\u80fd\u4e5f\u611f\u89c9\u6709\u70b9\u591a\u4f59\u3002<\/p>\n
fsync\uff08\uff09\u51fd\u6570\u4ee530\u7968\u8d5e\u6210\u30011\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u88ab\u63a5\u53d7\u3002<\/p>\n
\u6dfb\u52a0fsync\u51fd\u6570\u3002<\/p>\n
\u5f53\u6211\u67e5\u770b\u6e90\u4ee3\u7801\u65f6\uff0c\u6211\u53d1\u73b0\u5b83\u53ea\u662f\u4e00\u4e2aC\u8bed\u8a00fsync\u51fd\u6570\u7684\u5c01\u88c5\u3002<\/p>\n
\u6839\u636e\u6211\u9605\u8bfb\u53c2\u8003\u7f51\u5740\u7b49\u5185\u5bb9\uff0c\u5199\u5165\u51fd\u6570\uff08\u5982fwrite\uff09\u5b9e\u9645\u4e0a\u5e76\u4e0d\u4f1a\u5728\u8c03\u7528\u65f6\u7acb\u5373\u5b8c\u6210\u78c1\u76d8\u5199\u5165\uff0c\u800c\u53ea\u662f\u88ab\u7f13\u5b58\u8d77\u6765\u4e86\u3002\u56e0\u6b64\uff0c\u5982\u679c\u7a0b\u5e8f\u5728\u5199\u5165\u540e\u7acb\u5373\u5d29\u6e83\uff0c\u5c31\u6709\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u672a\u88ab\u5199\u5165\u800c\u6d88\u5931\u3002<\/p>\n
\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5b58\u5728\u7740\u7528\u4e8e\u8f93\u51fa\u7f13\u5b58\u7684\u51fd\u6570\uff0c\u5982fflush\u3001fsync\u548cfdatasync\u3002\u800c\u4f7f\u7528fsync\u51fd\u6570\u53ef\u4ee5\u786e\u4fdd\u5b9e\u9645\u5b8c\u6210\u4e86\u78c1\u76d8\u5199\u5165\u3002<\/p>\n
\u5927\u81f4\u5c31\u662f\u8fd9\u4e2a\u610f\u601d\u3002<\/p>\n
PHP\u4e2d\u539f\u672c\u5c31\u6709fflush\u8fd9\u4e2a\u51fd\u6570\uff0c\u4f46\u662f\u6700\u8fd1\u65b0\u589e\u4e86fsync\u3002\u867d\u7136RFC\u4e2d\u6ca1\u6709\u660e\u786e\u63d0\u5230\uff0c\u4f46\u5728pull request\u4e2d\u6084\u6084\u5730\u52a0\u5165\u4e86fdatasync\u3002<\/p>\n
\u9010\u6e10\u6dd8\u6c70Serializable
\n36\u4eba\u8d5e\u6210\uff0c0\u4eba\u53cd\u5bf9\uff0c\u88ab\u63a5\u53d7\u3002<\/p>\n
\u5c06Serializable\u8bbe\u7f6e\u4e3aE_DEPRECATED\u3002<\/p>\n
class<\/span> HOGE<\/span> implements<\/span> Serializable<\/span>{<\/span>\r\n    \/\/ Serializable<\/span>\r\n    public<\/span> function<\/span> serialize<\/span>()<\/span> {<\/span>\r\n        return<\/span> serialize<\/span>(<\/span>$this<\/span>-><\/span>data<\/span>);<\/span>\r\n    }<\/span>\r\n    public<\/span> function<\/span> unserialize<\/span>(<\/span>$data<\/span>)<\/span> {<\/span>\r\n        $this<\/span>-><\/span>data<\/span> =<\/span> unserialize<\/span>(<\/span>$data<\/span>);<\/span>\r\n    }<\/span>\r\n    \r\n    \/\/ \u30de\u30b8\u30c3\u30af\u30e1\u30bd\u30c3\u30c9<\/span>\r\n    public<\/span> function<\/span> __serialize<\/span>()<\/span> {<\/span>\r\n        return<\/span> serialize<\/span>(<\/span>$this<\/span>-><\/span>data<\/span>);<\/span>\r\n    }<\/span>\r\n    public<\/span> function<\/span> __unserialize<\/span>(<\/span>$data<\/span>)<\/span> {<\/span>\r\n        $this<\/span>-><\/span>data<\/span> =<\/span> unserialize<\/span>(<\/span>$data<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
PHP7.4\u65b0\u589e\u4e86\u9b54\u672f\u65b9\u6cd5__serialize\/__unserialize\uff0c\u5e76\u4e14\u4f18\u5148\u4e8eSerializable\u63a5\u53e3\u3002
\n\u4ee5\u4e0a\u4ee3\u7801\u5728PHP7.4\u4ee5\u4e0a\u53ea\u4f1a\u6267\u884c__serialize\/__unserialize\uff0cserialize\/unserialize\u4f1a\u88ab\u5ffd\u7565\u3002<\/p>\n
\u5982\u679c\u53ea\u6709 Serializable \u63a5\u53e3\u88ab\u5b9e\u73b0\u4f46\u672a\u5b9e\u73b0 __serialize \/ __unserialize \u65b9\u6cd5\uff0c\u90a3\u4e48\u8fd9\u6b21\u5c31\u4f1a\u53d1\u51fa E_DEPRECATED \u8b66\u544a\u3002
\n\u5982\u679c\u4e24\u8005\u90fd\u5b9e\u73b0\u4e86\uff0c\u4f3c\u4e4e\u5728 PHP8.1 \u4e2d\u4e0d\u4f1a\u53d1\u51fa\u8b66\u544a\u3002
\n\u5982\u679c\u4e24\u8005\u90fd\u672a\u5b9e\u73b0\uff0c\u90a3\u5f53\u7136\u5c31\u50cf\u4ee5\u524d\u4e00\u6837\uff0c\u4ec0\u4e48\u90fd\u4e0d\u4f1a\u53d1\u751f\u3002<\/p>\n
\u7ee7\u627f\u65b9\u6cd5\u4e2d\u7684\u9759\u6001\u53d8\u91cf
\n\u4ee538\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u88ab\u63a5\u7eb3\u3002<\/p>\n
\u5f53\u7ee7\u627f\u9759\u6001\u53d8\u91cf\u65f6\uff0c\u5176\u884c\u4e3a\u4f1a\u5fae\u5999\u5730\u53d8\u5316\u3002<\/p>\n
class<\/span> A<\/span> {<\/span>\r\n    public<\/span> static<\/span> function<\/span> counter<\/span>()<\/span> {<\/span>\r\n        static<\/span> $i<\/span> =<\/span> 0<\/span>;<\/span>\r\n        return<\/span> ++<\/span>$i<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\nclass<\/span> B<\/span> extends<\/span> A<\/span> {}<\/span>\r\n\r\nvar_dump<\/span>(<\/span>A<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(1)<\/span>\r\nvar_dump<\/span>(<\/span>A<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(2)<\/span>\r\nvar_dump<\/span>(<\/span>B<\/span>::<\/span>counter<\/span>());<\/span> \/\/ <PHP8.1:int(1)  >=PHP8.1:int(3)<\/span>\r\nvar_dump<\/span>(<\/span>B<\/span>::<\/span>counter<\/span>());<\/span> \/\/ <PHP8.1:int(2)  >=PHP8.1:int(4)<\/span>\r\n<\/code><\/pre>\n
\u65e0\u8bba\u7ee7\u627f\u4e0e\u5426\uff0c\u9759\u6001\u53d8\u91cf\u5c06\u59cb\u7ec8\u88ab\u89c6\u4e3a\u76f8\u540c\u7684\u53d8\u91cf\uff0c\u5373\u4f7f\u5728\u4e0d\u540c\u7684\u7c7b\u4e2d\u4e5f\u662f\u5982\u6b64\uff0c\u8fd9\u6837\u5c31\u6d88\u9664\u4e86\u6211\u4e0d\u592a\u7406\u89e3\u7684\u72b6\u6001\u3002<\/p>\n
\u53d8\u66f4\u540e\uff0c\u5c06\u5177\u6709\u4e0e\u7c7b\u53d8\u91cf\u76f8\u540c\u7684\u884c\u4e3a\u3002<\/p>\n
class<\/span> A<\/span> {<\/span>\r\n    static<\/span> $i<\/span> =<\/span> 0<\/span>;<\/span>\r\n    public<\/span> static<\/span> function<\/span> counter<\/span>()<\/span> {<\/span>\r\n        return<\/span> ++<\/span>self<\/span>::<\/span>$i<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\nclass<\/span> B<\/span> extends<\/span> A<\/span> {}<\/span>\r\n\r\nvar_dump<\/span>(<\/span>A<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(1)<\/span>\r\nvar_dump<\/span>(<\/span>A<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(2)<\/span>\r\nvar_dump<\/span>(<\/span>B<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(3)<\/span>\r\nvar_dump<\/span>(<\/span>B<\/span>::<\/span>counter<\/span>());<\/span> \/\/ int(4)<\/span>\r\n<\/code><\/pre>\n
\u7531\u4e8e\u9759\u6001\u53d8\u91cf\u548c\u7c7b\u53d8\u91cf\u7684\u539f\u56e0\uff0c\u5b83\u4eec\u7684\u884c\u4e3a\u5728\u5fae\u5999\u7684\u65b9\u5f0f\u4e0a\u6709\u6240\u4e0d\u540c\uff0c\u6240\u4ee5\u8fd9\u4e2a\u662f\u4e3a\u4e86\u4f7f\u5b83\u4eec\u7684\u884c\u4e3a\u4e00\u81f4\u3002
\n\u90a3\u4e48\uff0c\u5b83\u4eec\u4e3a\u4ec0\u4e48\u4e0d\u540c\u5462\uff1f<\/p>\n
\u5c06\u53cd\u5c04\u7684setAccessible()\u65b9\u6cd5\u53d8\u4e3a\u65e0\u64cd\u4f5c\u3002
\n\u4ee531\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u7684\u7ed3\u679c\u88ab\u63a5\u53d7\u3002<\/p>\n
\u5728ReflectionProperty\u548cReflectionMethod\u4e2d\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0bsetAccessible(true)\u3002<\/p>\n
class<\/span> HOGE<\/span>{<\/span>\r\n    private<\/span> static<\/span> int<\/span> $foo<\/span> =<\/span> 1<\/span>;<\/span>\r\n    private<\/span> static<\/span> function<\/span> bar<\/span>()<\/span>\r\n    {<\/span>\r\n        return<\/span> 2<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n\/\/ ReflectionProperty<\/span>\r\n$p<\/span> =<\/span> new<\/span> ReflectionProperty<\/span>(<\/span>HOGE<\/span>::<\/span>class<\/span>,<\/span> 'foo'<\/span>);<\/span>\r\n$p<\/span>-><\/span>setAccessible<\/span>(<\/span>true<\/span>);<\/span>\r\n$p<\/span>-><\/span>getValue<\/span>();<\/span> \/\/ 1<\/span>\r\n\r\n\/\/ ReflectionMethod<\/span>\r\n$p<\/span> =<\/span> new<\/span> ReflectionMethod<\/span>(<\/span>HOGE<\/span>::<\/span>class<\/span>,<\/span> 'bar'<\/span>);<\/span>\r\n$p<\/span>-><\/span>setAccessible<\/span>(<\/span>true<\/span>);<\/span>\r\n$p<\/span>-><\/span>invoke<\/span>();<\/span> \/\/ 2<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u4e2asetAccessible\uff0c\u53cd\u6b63\u6bcf\u6b21\u90fd\u5f97\u6307\u5b9a\uff0c\u5e72\u561b\u4e0d\u4e00\u5f00\u59cb\u9ed8\u8ba4\u5c31\u597d\u5462\uff0c\u8fd9\u662f\u4e3b\u5f20\u3002
\n\u6709\u4e86\u8fd9\u4e2a\uff0c\u9ed8\u8ba4\u5199\u6cd5\u5c31\u53ef\u4ee5\u50cf(new ReflectionProperty(HOGE::class, ‘foo’))->getValue();\u8fd9\u6837\u7b80\u6d01\u3002
\n\u800csetAccessible\u5b9e\u9645\u4e0a\u5c31\u4ec0\u4e48\u90fd\u4e0d\u9700\u8981\u505a\u4e86\u3002<\/p>\n
\u55ef\uff0c\u867d\u7136\u53ef\u4ee5\u8bf4\u5b83\u65b9\u4fbf\uff0c\u4f46\u66f4\u5e0c\u671b\u80fd\u6709\u66f4\u6709\u4e89\u8bae\u6027\u7684\u63d0\u8bae\uff0c\u8ba9\u5927\u5bb6\u610f\u89c1\u4e0d\u4e00\u81f4\uff0c\u5168\u4f53\u90fd\u8d5e\u540c\u8fd8\u662f\u6709\u70b9\u4ee4\u4eba\u5403\u60ca\u7684\u3002<\/p>\n
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\u7981\u6b62\u4ecefalse\u5f00\u59cb\u81ea\u52a8\u751f\u6210\u6570\u7ec4\u3002<\/p>\n
\/\/ undefined\u304b\u3089<\/span>\r\n$arr<\/span>[]<\/span> =<\/span> 'some value'<\/span>;<\/span>\r\n$arr<\/span>[<\/span>'doesNotExist'<\/span>][]<\/span> =<\/span> 2<\/span>;<\/span> \/\/ ['some value', 'doesNotExist'=>[2]]<\/span>\r\n\r\n\/\/ null\u304b\u3089<\/span>\r\n$arr<\/span> =<\/span> null<\/span>;<\/span>\r\n$arr<\/span>[]<\/span> =<\/span> 2<\/span>;<\/span> \/\/ [2]<\/span>\r\n\r\n\/\/ false\u304b\u3089<\/span>\r\n$arr<\/span> =<\/span> false<\/span>;<\/span>\r\n$arr<\/span>[]<\/span> =<\/span> 2<\/span>;<\/span> \/\/ [2]<\/span>\r\n<\/code><\/pre>\n
\u5728PHP\u4e2d\uff0c\u5982\u679c\u5728\u4e00\u4e2a\u7a7a\u7684\u4f4d\u7f6e\u7a81\u7136\u653e\u5165\u4e00\u4e2a\u6570\u7ec4\u503c\uff0c\u81ea\u52a8\u5c31\u4f1a\u521b\u5efa\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n
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\n\u76f8\u53cd\uff0cundefined\u548cnull\u662f\u4f8b\u5916\u60c5\u51b5\u3002<\/p>\n
\/\/ true\u304b\u3089<\/span>\r\n$arr<\/span> =<\/span> true<\/span>;<\/span>\r\n$arr<\/span>[]<\/span> =<\/span> 2<\/span>;<\/span> \/\/ Warning: Cannot use a scalar value as an array<\/span>\r\n<\/code><\/pre>\n
PHP 8.1\u6240\u8fdb\u884c\u7684\u5f03\u7528\u66f4\u65b0\u5bf9\u4e8e\u5404\u79cd\u65e7\u529f\u80fd\u548c\u5199\u6cd5\uff0c\u63d0\u8bae\u5728PHP8.1\u4e2d\u6807\u8bb0\u4e3a\u8fc7\u65f6\uff0c\u7136\u540e\u5728PHP9\u4e2d\u5220\u9664\u3002<\/p>\n
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\n\u4f8b\u5982\uff0c\u5c06date_sunrise\u548cdate_sunset\u5220\u9664\uff0c\u5c06\u5b83\u4eec\u5408\u5e76\u4e3adate_sun_info\u3002<\/p>\n
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\u5bf9\u6b64\u7684\u60f3\u6cd5
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Fiber\u4f5c\u4e3a\u4e00\u9879\u5177\u6709\u5de8\u5927\u6f5c\u529b\u7684\u5b58\u5728\uff0c\u8fdd\u80cc\u4e86PHP\u4e0a\u7684\u201c\u81ea\u4e0a\u800c\u4e0b\u6267\u884c\u201d\u7684\u539f\u5219\u3002\u6839\u636e\u672a\u6765\u7684\u5e93\u9002\u914d\u60c5\u51b5\uff0c\u5b83\u6709\u671b\u6210\u4e3a\u5f3a\u5927\u7684\u529f\u80fd\u3002<\/p>\n
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