{"id":30485,"date":"2023-08-22T03:43:22","date_gmt":"2023-08-11T17:33:17","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php8-3%e3%80%91php%e7%9a%84%e9%9a%8f%e6%9c%ba%e6%95%b0%e7%94%9f%e6%88%90%e7%ae%97%e6%b3%95%e5%be%97%e5%88%b0%e8%bf%9b%e4%b8%80%e6%ad%a5%e6%94%b9%e8%bf%9b%e3%80%82\/"},"modified":"2025-08-12T19:24:03","modified_gmt":"2025-08-12T11:24:03","slug":"%e3%80%90php8-3%e3%80%91php%e7%9a%84%e9%9a%8f%e6%9c%ba%e6%95%b0%e7%94%9f%e6%88%90%e7%ae%97%e6%b3%95%e5%be%97%e5%88%b0%e8%bf%9b%e4%b8%80%e6%ad%a5%e6%94%b9%e8%bf%9b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php8-3%e3%80%91php%e7%9a%84%e9%9a%8f%e6%9c%ba%e6%95%b0%e7%94%9f%e6%88%90%e7%ae%97%e6%b3%95%e5%be%97%e5%88%b0%e8%bf%9b%e4%b8%80%e6%ad%a5%e6%94%b9%e8%bf%9b%e3%80%82\/","title":{"rendered":"\u3010PHP8.3\u3011PHP\u7684\u968f\u673a\u6570\u751f\u6210\u7b97\u6cd5\u5f97\u5230\u8fdb\u4e00\u6b65\u6539\u8fdb"},"content":{"rendered":"

\u5728PHP 8.2\u4e2d\uff0c\u968f\u673a\u6570\u5f97\u5230\u4e86\u5927\u5e45\u6539\u5584\uff0c\u4f46\u5f88\u5feb\u5728PHP 8.3\u4e2d\uff0c\u51b3\u5b9a\u589e\u52a0\u4e86\u4e00\u4e9b\u65b0\u529f\u80fd\u3002<\/p>\n

\u4ee5\u4e0b\u662fRFC\uff08Randomizer Additions\uff09\u7684\u4ecb\u7ecd\u3002<\/p>\n

PHP RFC: \u968f\u673a\u6570\u751f\u6210\u5668 \u6dfb\u52a0\u529f\u80fd<\/p>\n

\u4ecb\u7ecd\u5728\u8fd9\u4efdRFC\u4e2d\uff0c\u6211\u4eec\u5efa\u8bae\u5411\\Random\\Randomizer\u4e2d\u6dfb\u52a0\u4e00\u4e9b\u5728\u7528\u6237\u7a7a\u95f4\u4e2d\u5b9e\u65bd\u8d77\u6765\u56f0\u96be\u6216\u7e41\u7410\u7684\u6709\u7528\u529f\u80fd\u3002<\/p>\n

\u5728\u521b\u5efa\u8bc6\u522b\u7801\u3001\u5151\u6362\u7801\u548c\u8d85\u51fa\u6574\u6570\u8303\u56f4\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u7b49\u7528\u9014\u4e2d\uff0c\u7ecf\u5e38\u9700\u8981\u751f\u6210\u5305\u542b\u7279\u5b9a\u5b57\u7b26\u7684\u968f\u673a\u5b57\u7b26\u4e32\u3002
\n\u8981\u5728\u7528\u6237\u754c\u9762\u5b9e\u73b0\u6b64\u64cd\u4f5c\uff0c\u9700\u8981\u5728\u5faa\u73af\u4e2d\u83b7\u53d6\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u968f\u673a\u504f\u79fb\u91cf\uff0c\u5c3d\u7ba1\u8fd9\u5f88\u7b80\u5355\uff0c\u4f46\u5374\u9700\u8981\u591a\u884c\u4ee3\u7801\u3002
\n\u800c\u4e14\uff0c\u8fd8\u5bb9\u6613\u51fa\u73b0\u5fae\u5c0f\u7684\u9519\u8bef\uff0c\u5982\u5fd8\u8bb0\u4ece\u5b57\u7b26\u957f\u5ea6\u4e2d\u51cf\u53bb1\u7b49\u3002<\/p>\n

\u5728\u751f\u6210\u968f\u673a\u6d6e\u70b9\u6570\u65b9\u9762\u975e\u5e38\u6709\u7528\uff0c\u4f8b\u5982\u5728\u9700\u8981\u6309\u7167\u4e00\u5b9a\u6982\u7387\u751f\u6210\u5e03\u5c14\u503c\u7684\u60c5\u51b5\u4e0b\u3002
\n\u5728\u7528\u6237\u5c42\u9762\u6267\u884c\u6b64\u64cd\u4f5c\u770b\u4f3c\u7b80\u5355\uff0c\u5b9e\u9645\u4e0a\u5374\u5f88\u7e41\u7410\u3002
\n\u5e38\u89c1\u7684\u505a\u6cd5\u662f\u901a\u8fc7Randomizer::getInt()\u83b7\u53d6\u7684\u503c\u6765\u8fdb\u884c\u9664\u6cd5\u8ba1\u7b97\uff0c\u4f46\u7531\u4e8e\u56db\u820d\u4e94\u5165\u8bef\u5dee\u548c\u6d6e\u70b9\u6570\u504f\u5dee\u7b49\u539f\u56e0\uff0c\u7ed3\u679c\u5f80\u5f80\u4e0d\u592a\u51c6\u786e\u3002<\/p>\n

\u63d0\u6848\u5728\\ Random \\ Randomizer\u4e2d\u6dfb\u52a03\u4e2a\u65b9\u6cd5\u548c\u4e00\u4e2a\u679a\u4e3e\u3002<\/p>\n
namespace<\/span> Random<\/span>;<\/span>\r\n\r\nfinal<\/span> class<\/span> Randomizer<\/span> {<\/span>\r\n    \/\/ [\u2026]<\/span>\r\n    public<\/span> function<\/span> getBytesFromString<\/span>(<\/span>string<\/span> $string<\/span>,<\/span> int<\/span> $length<\/span>):<\/span> string<\/span> {}<\/span>\r\n    public<\/span> function<\/span> nextFloat<\/span>():<\/span> float<\/span> {}<\/span>\r\n    public<\/span> function<\/span> getFloat<\/span>(<\/span>\r\n        float<\/span> $min<\/span>,<\/span>\r\n        float<\/span> $max<\/span>,<\/span>\r\n        IntervalBoundary<\/span> $boundary<\/span> =<\/span> IntervalBoundary<\/span>::<\/span>ClosedOpen<\/span>\r\n    ):<\/span> float<\/span> {}<\/span>\r\n}<\/span>\r\n\r\nenum<\/span> IntervalBoundary<\/span> {<\/span>\r\n    case<\/span> ClosedOpen<\/span>;<\/span>\r\n    case<\/span> ClosedClosed<\/span>;<\/span>\r\n    case<\/span> OpenClosed<\/span>;<\/span>\r\n    case<\/span> OpenOpen<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5b57\u8282\u4ece\u7ed9\u5b9a\u7684\u5b57\u7b26\u4e32\u4e2d\u751f\u6210\u968f\u673a\u5b57\u7b26\u4e32\u3002<\/p>\n
\u5982\u679c\u7b2c\u4e00\u4e2a\u53c2\u6570$string\u662f\u4e00\u4e2a\u9009\u62e9\u5b57\u7b26\u4e32\uff0c\u5219\u5f53\u5b58\u5728\u76f8\u540c\u5b57\u7b26\u65f6\uff0c\u8be5\u5b57\u7b26\u88ab\u9009\u62e9\u7684\u6982\u7387\u4f1a\u589e\u52a0\u3002\u5982\u679c\u6240\u6709\u5b57\u7b26\u53ea\u51fa\u73b0\u4e00\u6b21\uff0c\u90a3\u4e48\u9009\u62e9\u6982\u7387\u662f\u5747\u5300\u7684\u3002<\/p>\n
\u7b2c\u4e8c\u4e2a\u53c2\u6570$length\u8868\u793a\u8fd4\u56de\u503c\u7684\u957f\u5ea6\u3002<\/p>\n
\u4f8b\u5b50<\/p>\n
$randomizer<\/span> =<\/span> new<\/span> \\Random\\Randomizer<\/span>();<\/span>\r\n\r\n\/\/ \u30e9\u30f3\u30c0\u30e0\u306a\u30c9\u30e1\u30a4\u30f3\u540d<\/span>\r\nvar_dump<\/span>(<\/span>sprintf<\/span>(<\/span>\r\n    \"%s.example.com\"<\/span>,<\/span>\r\n    $randomizer<\/span>-><\/span>getBytesFromString<\/span>(<\/span>'abcdefghijklmnopqrstuvwxyz0123456789'<\/span>,<\/span> 16<\/span>)<\/span>\r\n));<\/span> \/\/ string(28) \"xfhnr0z6ok5fdlbz.example.com\"<\/span>\r\n\r\n\/\/ \u591a\u8981\u7d20\u8a8d\u8a3c\u306e\u8a8d\u8a3c\u30b3\u30fc\u30c9<\/span>\r\nvar_dump<\/span>(<\/span>\r\n    implode<\/span>(<\/span>'-'<\/span>,<\/span> str_split<\/span>(<\/span>$randomizer<\/span>-><\/span>getBytesFromString<\/span>(<\/span>'0123456789'<\/span>,<\/span> 20<\/span>),<\/span> 5<\/span>))<\/span>\r\n);<\/span> \/\/ string(23) \"09898-46592-79230-33336\"<\/span>\r\n\r\n\/\/ \u5c0f\u6570<\/span>\r\nvar_dump<\/span>(<\/span>sprintf<\/span>(<\/span>\r\n    '0.%s'<\/span>,<\/span>\r\n    $randomizer<\/span>-><\/span>getBytesFromString<\/span>(<\/span>'0123456789'<\/span>,<\/span> 30<\/span>)<\/span>\r\n));<\/span> \/\/ string(30) \"0.217312509790167227890877670844\"<\/span>\r\n\r\n\/\/ a\u304c75%\u3001b\u304c25%\u3067\u51fa\u73fe\u3059\u308b\u30e9\u30f3\u30c0\u30e0\u6587\u5b57\u5217<\/span>\r\nvar_dump<\/span>(<\/span>\r\n    $randomizer<\/span>-><\/span>getBytesFromString<\/span>(<\/span>'aaab'<\/span>,<\/span> 16<\/span>)<\/span>\r\n);<\/span> \/\/ string(16) \"baabaaaaaaababaa\"<\/span>\r\n\r\n\/\/ DNA<\/span>\r\nvar_dump<\/span>(<\/span>\r\n    $randomizer<\/span>-><\/span>getBytesFromString<\/span>(<\/span>'ACGT'<\/span>,<\/span> 30<\/span>)<\/span>\r\n);<\/span> \/\/ string(30) \"CGTAGATCGTTCTGATAGAAGCTAACGGTT\"<\/span>\r\n<\/code><\/pre>\n
\u5728\u521b\u5efa\u5c0f\u6570\u65f6\uff0c\u8bf7\u6ce8\u610f\u6700\u540e\u4e00\u4f4d\u53ef\u80fd\u4e3a0\u3002<\/p>\n
\u83b7\u53d6\u6d6e\u70b9\u6570()\u8fd4\u56de\u4ecb\u4e8e\u53c2\u6570 $min \u548c $max \u4e4b\u95f4\u7684\u5c0f\u6570\u3002
\n\u533a\u95f4\u7684\u8fb9\u754c\u5f00\u653e\u4e0e\u5426\u53d6\u51b3\u4e8e\u53c2\u6570 $boundary\u3002
\n\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662f\u534a\u5f00\u533a\u95f4 [$min, $max)\uff0c\u5305\u62ec $min \u4f46\u4e0d\u5305\u62ec $max\u3002
\n\u8fd4\u56de\u7684\u503c\u5728\u8bbe\u5b9a\u7684\u533a\u95f4\u5185\u5747\u5300\u5206\u5e03\u3002<\/p>\n
\u5728\u5747\u7b49\u5206\u5e03\u4e2d\uff0c\u6bcf\u4e2a\u533a\u95f4\u7684\u503c\u6240\u5360\u6bd4\u4f8b\u4e0e\u5176\u4ed6\u76f8\u540c\u5bbd\u5ea6\u7684\u533a\u95f4\u7684\u503c\u6240\u5360\u6bd4\u4f8b\u76f8\u7b49\u3002
\n\u4f8b\u5982\uff0c\u5f53\u8c03\u7528getFloat(0, 1, IntervalBoundary::ClosedOpen)\u65f6\uff0c\u8fd4\u56de\u503c\u5c0f\u4e8e0.5\u7684\u6982\u7387\u4e0e\u5927\u4e8e\u6216\u7b49\u4e8e0.5\u7684\u6982\u7387\u76f8\u540c\u3002
\n\u7c7b\u4f3c\u5730\uff0c\u5c0f\u4e8e0.1\u7684\u6982\u7387\u4e3a10%\uff0c\u4e0e\u5927\u4e8e\u6216\u7b49\u4e8e0.9\u7684\u6982\u7387\u76f8\u540c\u3002<\/p>\n
\u6211\u5011\u4f7f\u7528\u7684\u6f14\u7b97\u6cd5\u662f\u4f86\u81ea\u4e00\u7bc7\u540d\u70ba\u300c\u5f9e\u5340\u9593\u4e2d\u63d0\u53d6\u96a8\u6a5f\u6d6e\u9ede\u6578\u7684\u03b3-section\u300d\u7684\u8ad6\u6587\u4e2d\u516c\u958b\u7684\u03b3-section\u6f14\u7b97\u6cd5\u3002<\/p>\n
\u7b2c\u4e00\u4e2a\u53c2\u6570$min\u8868\u793a\u6700\u5c0f\u503c\u3002
\n\u7b2c\u4e8c\u4e2a\u53c2\u6570$max\u8868\u793a\u6700\u5927\u503c\u3002<\/p>\n
\u7b2c\u4e09\u4e2a\u53c2\u6570$boundary\u8868\u793a\u8fd4\u56de\u503c\u4e2d\u8fb9\u754c\u7684\u5904\u7406\u65b9\u5f0f\u3002
\n– \u9ed8\u8ba4\u4e3a\\Random\\IntervalBoundary::ClosedOpen\uff0c\u8868\u793a[$min, $max)\u3002
\n– ClosedClosed\u8868\u793a[$min, $max]\u3002
\n– ClosedOpen\u8868\u793a($min, $max]\u3002
\n– OpenOpen\u8868\u793a($min, $max)\u3002<\/p>\n
\u793a\u4f8b<\/p>\n
$randomizer<\/span> =<\/span> new<\/span> \\Random\\Randomizer<\/span>();<\/span>\r\n\r\n\/\/ \u7d4c\u7def\u5ea6<\/span>\r\n\/\/ \u7def\u5ea6\u306f90\/-90\u3069\u3061\u3089\u3082\u53ef<\/span>\r\n\/\/ \u7d4c\u5ea6\u306f180\u306f\u3042\u308b\u3051\u3069-180\u306f\u306a\u3044<\/span>\r\nvar_dump<\/span>(<\/span>sprintf<\/span>(<\/span>\r\n    \"Lat: %+.6f Lng: %+.6f\"<\/span>,<\/span>\r\n    $randomizer<\/span>-><\/span>getFloat<\/span>(<\/span>-<\/span>90<\/span>,<\/span> 90<\/span>,<\/span> \\Random\\IntervalBoundary<\/span>::<\/span>ClosedClosed<\/span>),<\/span>\r\n    $randomizer<\/span>-><\/span>getFloat<\/span>(<\/span>-<\/span>180<\/span>,<\/span> 180<\/span>,<\/span> \\Random\\IntervalBoundary<\/span>::<\/span>OpenClosed<\/span>),<\/span>\r\n));<\/span> \/\/ string(32) \"Lat: -51.742529 Lng: +135.396328\"<\/span>\r\n<\/code><\/pre>\n
\u4e0b\u4e00\u4e2a\u6d6e\u70b9\u6570()\u8fd9\u4e2a\u65b9\u6cd5\u4e0e->getFloat(0, 1, \\Random\\IntervalBoundary::ClosedOpen)\u662f\u76f8\u540c\u7684\u3002
\n\u5b83\u53ef\u4ee5\u66f4\u5feb\u5730\u5904\u7406\u5e38\u89c1\u7684\u60c5\u51b5\uff0c\u5176\u4e2d\u5e0c\u671b\u83b7\u53d6\u8303\u56f4\u4e3a[0, 1)\u7684\u6570\u636e\u3002<\/p>\n
\u4f8b\u5b50<\/p>\n
$randomizer<\/span> =<\/span> new<\/span> \\Random\\Randomizer<\/span>();<\/span>\r\n\r\n\/\/ 50%\u306e\u78ba\u7387<\/span>\r\nvar_dump<\/span>(<\/span>\r\n    $randomizer<\/span>-><\/span>nextFloat<\/span>()<\/span> <<\/span> 0.5<\/span>\r\n);<\/span> \/\/ bool(true)<\/span>\r\n\r\n\/\/ 10%\u306e\u78ba\u7387<\/span>\r\nvar_dump<\/span>(<\/span>\r\n    $randomizer<\/span>-><\/span>nextFloat<\/span>()<\/span> <<\/span> 0.1<\/span>\r\n);<\/span> \/\/ bool(false)<\/span>\r\n<\/code><\/pre>\n
\u5411\u540e\u4e0d\u517c\u5bb9\u7684\u66f4\u6539\u7c7b\u540d\\Random\\IntervalBoundary\u5c06\u65e0\u6cd5\u4f7f\u7528\u3002<\/p>\n
\u547d\u540d\u7a7a\u95f4\\Random\u662f\u5728PHP\u7684\u968f\u673a\u6570\u4e2d\u4f7f\u7528\u7684\uff0c\u800c\u4e14\u5728GitHub\u4e0a\u4e5f\u6ca1\u6709\u540c\u540d\u7684\u7c7b\uff0c\u6240\u4ee5\u4e0d\u4f1a\u6709\u5b9e\u9645\u5f71\u54cd\u3002<\/p>\n
\u5efa\u8bae\u7684 PHP \u7248\u672cPHP8.x \u53ef\u4ee5\u8fdb\u884c\u4e00\u79cd\u672c\u5730\u5316\u7684\u4e2d\u56fd\u8bed\u8a00\u91ca\u4e49\uff0c\u4f46\u53ea\u63d0\u4f9b\u4e00\u79cd\u9009\u9879 \uff1aPHP8.x<\/p>\n
RFC \u5f71\u54cd\u5bf9\u4e8eSAPI\u548c\u6269\u5c55\u6a21\u5757\uff0c\u4ee5\u53ca\u5e38\u91cf\u548cphp.ini\u7684\u66f4\u6539\uff0c\u6ca1\u6709\u4efb\u4f55\u5f71\u54cd\u3002<\/p>\n
\u63d0\u51fa\u7684\u6295\u7968\u9009\u62e9getBytesFromString\uff08\uff09\u88ab\u4ee518\u7968\u8d5e\u6210\u30010\u7968\u53cd\u5bf9\u901a\u8fc7\uff0cgetFloat\uff08\uff09\/ nextFloat\uff08\uff09\u88ab\u4ee516\u7968\u8d5e\u6210\u30011\u7968\u53cd\u5bf9\u7684\u8d5e\u6210\u591a\u6570\u901a\u8fc7\u3002
\n\u6b64\u529f\u80fd\u5c06\u5728PHP8.3\u4e2d\u5f15\u5165\u3002<\/p>\n
\u8865\u4e01\u548c\u6d4b\u8bd5getBytesFromString()\u65b9\u6cd5\u7684\u5b9e\u73b0
\ngetFloat()\/nextFloat()\u65b9\u6cd5\u7684\u5b9e\u73b0<\/p>\n
\u6267\u884c\u5b9e\u65bdhttps:\/\/github.com\/php\/php-src\/commit\/ac3ecd03af009d433d4b75d570b3b0f0a3fc0ff7 \u53ef\u4ee5\u88ab\u8868\u8ff0\u4e3a\uff1a
\n\u8fd9\u662f\u4e00\u4e2a\u5177\u6709\u552f\u4e00\u6807\u8bc6\u7b26ac3ecd03af009d433d4b75d570b3b0f0a3fc0ff7\u7684\u63d0\u4ea4\u3002
\nhttps:\/\/github.com\/php\/php-src\/commit\/f9a1a903805a0c260c97bcc8bf2c14f2dd76ca76 \u53ef\u4ee5\u88ab\u8868\u8ff0\u4e3a\uff1a
\n\u8fd9\u662f\u4e00\u4e2a\u5177\u6709\u552f\u4e00\u6807\u8bc6\u7b26f9a1a903805a0c260c97bcc8bf2c14f2dd76ca76\u7684\u63d0\u4ea4\u3002<\/p>\n
\u53c2\u8003\u8d44\u6599\u6700\u521d\u7684\u63d0\u6848
\nRFC\u7684\u8ba8\u8bba<\/p>\n
\u611f\u60f3\u662f\u4ec0\u4e48\u968f\u673a\u5b57\u7b26\u4e32\u6709\u65f6\u5019\u771f\u7684\u5f88\u9ebb\u70e6\u3002
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