{"id":30906,"date":"2023-09-04T07:15:52","date_gmt":"2023-04-08T13:09:06","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84array_unique%e5%87%bd%e6%95%b0\/"},"modified":"2025-08-12T21:20:03","modified_gmt":"2025-08-12T13:20:03","slug":"php%e4%b8%ad%e7%9a%84array_unique%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84array_unique%e5%87%bd%e6%95%b0\/","title":{"rendered":"PHP\u4e2d\u7684array_unique\u51fd\u6570"},"content":{"rendered":"

\u9996\u5148\u4f60\u597d\u3002<\/p>\n

\u6211\u662fy-encore\uff0c\u662f\u7b2c\u4e00\u5e74\u7684\u670d\u52a1\u5668\u7aef\u5de5\u7a0b\u5e08\uff0c\u5728\u683c\u4f26\u54092017\u5e74Advent\u65e5\u5386\u4e0a\u53d1\u8868\u768412\u67088\u65e5\u7684\u6587\u7ae0\u3002\u4eca\u5929\u6211\u60f3\u8c08\u8c08\u6211\u4eec\u5728\u5f00\u53d1\u4e2d\u4f7f\u7528\u7684PHP\u7684array_unique\u51fd\u6570\u3002\uff08\u5f88\u62b1\u6b49\uff0c\u6211\u5c06\u6b63\u9898\u7684\u5185\u5bb9\u6539\u53d8\u4e86\uff09<\/p>\n

array_unique\u662f\u4ec0\u4e48\uff1f\u6709\u5173\u5185\u5bb9\u8bf7\u70b9\u51fb\u8fd9\u91cc\u3002
\nhttp:\/\/php.net\/manual\/ja\/function.array-unique.php<\/p>\n

\u4f7f\u7528PHP\u7684\u7528\u6237\u53ef\u80fd\u4f1a\u77e5\u9053\uff0c\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u5220\u9664\u6570\u7ec4\u4e2d\u91cd\u590d\u503c\u7684\u51fd\u6570\u3002<\/p>\n

\u5f53\u6211\u4eec\u73b0\u5b9e\u4e2d\u4e3e\u4e2a\u4f8b\u5b50\u65f6\uff0c<\/p>\n

$testArray<\/span> =<\/span> [<\/span>\r\n    'one'<\/span> =><\/span> 1<\/span>,<\/span>\r\n    'two'<\/span> =><\/span> 1<\/span>,<\/span>\r\n    'three'<\/span> =><\/span> 2<\/span>,<\/span>\r\n    'four'<\/span> =><\/span> 1<\/span>,<\/span>\r\n    'five'<\/span> =><\/span> 3<\/span>,<\/span>\r\n];<\/span>\r\n\r\nprint_r<\/span>(<\/span>array_unique<\/span>(<\/span>$testArray<\/span>));<\/span>\r\n<\/code><\/pre>\n
Array<\/span>\r\n(<\/span>\r\n    [<\/span>one<\/span>]<\/span> =><\/span> 1<\/span>\r\n    [<\/span>three<\/span>]<\/span> =><\/span> 2<\/span>\r\n    [<\/span>five<\/span>]<\/span> =><\/span> 3<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u6ca1\u6709\u5173\u7cfb\u6ca1\u6709key\u3002\u5373\u4f7f\u6570\u5b57\u548c\u5b57\u7b26\u4e32\u6df7\u5408\uff0c\u4e5f\u53ef\u4ee5\u5220\u9664\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u540e\u76f8\u7b49\u7684\u9879\u3002<\/p>\n
$testArray<\/span> =<\/span> [<\/span>\r\n    1<\/span>,<\/span>\r\n    '1'<\/span>,<\/span>\r\n    2<\/span>,<\/span>\r\n    1<\/span>,<\/span>\r\n    '3'<\/span>,<\/span>\r\n];<\/span>\r\n\r\nprint_r<\/span>(<\/span>array_unique<\/span>(<\/span>$testArray<\/span>));<\/span>\r\n<\/code><\/pre>\n
Array<\/span>\r\n(<\/span>\r\n    [<\/span>0<\/span>]<\/span> =><\/span> 1<\/span>\r\n    [<\/span>2<\/span>]<\/span> =><\/span> 2<\/span>\r\n    [<\/span>4<\/span>]<\/span> =><\/span> 3<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u60f3\u5728\u591a\u7ef4\u6570\u7ec4\u4e2d\u5e94\u7528\u3002
\n\u6709\u65f6\u5019\u6211\u4eec\u60f3\u8981\u4ee5\u5173\u8054\u6570\u7ec4\u7684\u5f62\u5f0f\u83b7\u53d6\u6570\u636e\uff0c\u5e76\u521b\u5efa\u4e00\u4e2a\u6574\u7406\u540e\u7684\u6570\u7ec4\uff0c\u7136\u540e\u4ece\u4e2d\u5220\u9664\u91cd\u590d\u7684\u6570\u636e\u3002<\/p>\n
\u5728\u4e4b\u524d\u7684php.net\u8bf4\u660e\u4e2d\uff0c<\/p>\n
\u6ce8\u610f\uff1a\u8bf7\u6ce8\u610f\uff0carray_unique() \u4e0d\u9002\u7528\u4e8e\u591a\u7ef4\u6570\u7ec4\u3002<\/p><\/blockquote>\n
\u7136\u800c\uff0c\u5f53\u4f60\u641c\u7d22”array_unique \u591a\u7ef4\u6570\u7ec4”\u65f6\uff0c\u4f60\u4f1a\u53d1\u73b0\u5982\u679c\u5728array_unique\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570sort_flags\u4e2d\u6307\u5b9aSORT_REGULAR\uff0c\u4f3c\u4e4e\u4f1a\u5f97\u5230\u826f\u597d\u7684\u7ed3\u679c\u3002<\/p>\n
$testArray<\/span> =<\/span> [<\/span>\r\n    'one'<\/span> =><\/span> [<\/span>\r\n        'first'<\/span> =><\/span> 1<\/span>,<\/span>\r\n        'second'<\/span> =><\/span> 2<\/span>,<\/span>\r\n    ],<\/span>\r\n    'two'<\/span> =><\/span> [<\/span>\r\n        'first'<\/span> =><\/span> 1<\/span>,<\/span>\r\n        'second'<\/span> =><\/span> 2<\/span>,<\/span>\r\n    ],<\/span>\r\n    'three'<\/span> =><\/span> [<\/span>\r\n        'first'<\/span> =><\/span> 0<\/span>,<\/span>\r\n        'second'<\/span> =><\/span> 2<\/span>,<\/span>\r\n    ],<\/span>\r\n    'four'<\/span> =><\/span> [<\/span>\r\n        'first'<\/span> =><\/span> 1<\/span>,<\/span>\r\n        'second'<\/span> =><\/span> 2<\/span>,<\/span>\r\n    ],<\/span>\r\n];<\/span>\r\n\r\nprint_r<\/span>(<\/span>array_unique<\/span>(<\/span>$testArray<\/span>,<\/span> SORT_REGULAR<\/span>));<\/span>\r\n<\/code><\/pre>\n
Array<\/span>\r\n(<\/span>\r\n    [<\/span>one<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>first<\/span>]<\/span> =><\/span> 1<\/span>\r\n            [<\/span>second<\/span>]<\/span> =><\/span> 2<\/span>\r\n        )<\/span>\r\n    [<\/span>three<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>first<\/span>]<\/span> =><\/span> 0<\/span>\r\n            [<\/span>second<\/span>]<\/span> =><\/span> 2<\/span>\r\n        )<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u6211\u660e\u767d\u4e86\uff0c\u770b\u8d77\u6765\u91cd\u590d\u6570\u636e\u88ab\u5de7\u5999\u5730\u5220\u9664\u4e86\u3002<\/p>\n
\u6709\u65f6\u5019\u4f1a\u51fa\u73b0\u4e0d\u987a\u5229\u7684\u60c5\u51b5
\nphp_unique\u7684\u5b9e\u73b0\u9996\u5148\u5bf9\u6570\u7ec4\u8fdb\u884c\u4e00\u6b21\u6392\u5e8f\uff0c\u7136\u540e\u53bb\u9664\u91cd\u590d\u7684\u5143\u7d20\u4ee5\u8fdb\u884c\u91cd\u590d\u5224\u65ad\u3002
\n\u4e4b\u524d\u63d0\u5230\u7684sort_flags\u662f\u6307\u5b9a\u6392\u5e8f\u65f6\u8981\u5339\u914d\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5982\u679c\u662fSORT_REGULAR\uff0c\u5219\u8fdb\u884c\u6bd4\u8f83\u548c\u6392\u5e8f\u65f6\u4e0d\u8fdb\u884c\u7279\u6b8a\u7684\u7c7b\u578b\u8f6c\u6362\u3002
\n\u7531\u4e8e\u9700\u8981\u8fdb\u884c\u6392\u5e8f\u624d\u80fd\u5224\u65ad\u91cd\u590d\uff0c\u5982\u679c\u6392\u5e8f\u65f6\u6bd4\u8f83\u4e0d\u6210\u529f\u7684\u5143\u7d20\u5305\u542b\u5728\u5185\uff0c\u5219array_unique\u7684\u7ed3\u679c\u5c06\u4e0d\u7a33\u5b9a\u3002<\/p>\n
\u6211\u5011\u4f7f\u7528SORT_REGULAR\u4f86\u5c0d\u591a\u7dad\u6578\u7d44\u9032\u884carray_unique\u64cd\u4f5c\uff0c\u4f46\u6b63\u5982\u9019\u7bc7\u6587\u7ae0\u6240\u6307\u51fa\u7684\uff0c\u7576\u6578\u5b57\u548c\u5b57\u7b26\u4e32\u6df7\u5408\u6642\uff0c\u53ef\u80fd\u6703\u8868\u73fe\u51fa\u4e0d\u7a69\u5b9a\u7684\u884c\u70ba\u3002<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5f53\u60f3\u8981\u5bf9\u5177\u6709\u4e0d\u540c\u7ed3\u6784\u7684\u5173\u8054\u6570\u7ec4\u8fdb\u884c\u91cd\u590d\u68c0\u67e5\u65f6\uff0c\u7531\u4e8e\u65e0\u6cd5\u5f88\u597d\u5730\u6bd4\u8f83\u5143\u7d20\uff0carray_unique\u7684\u7ed3\u679c\u5c06\u53d8\u5f97\u4e0d\u7a33\u5b9a\u3002\u8ba9\u6211\u4eec\u4e3e\u4e00\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u521b\u5efa\u65e0\u6cd5\u8fdb\u884c\u7b80\u5355\u6bd4\u8f83\u7684\u5173\u8054\u6570\u7ec4\u3002<\/p>\n
function<\/span> createTestArray<\/span>(<\/span>$keyName<\/span>)<\/span> {<\/span>\r\n    return<\/span> [<\/span>\r\n        'one'<\/span> =><\/span> 1<\/span>,<\/span>\r\n        'two'<\/span> =><\/span> 2<\/span>,<\/span>\r\n        $keyName<\/span> =><\/span> 3<\/span>,<\/span>\r\n    ];<\/span>\r\n}<\/span>\r\n\r\necho<\/span> '(three < san) '<\/span> .<\/span> (<\/span>createTestArray<\/span>(<\/span>'three'<\/span>)<\/span> <<\/span> createTestArray<\/span>(<\/span>'san'<\/span>)<\/span> ?<\/span> 'true'<\/span> :<\/span> 'false'<\/span>);<\/span>\r\necho<\/span> '(three > san) '<\/span> .<\/span> (<\/span>createTestArray<\/span>(<\/span>'three'<\/span>)<\/span> ><\/span> createTestArray<\/span>(<\/span>'san'<\/span>)<\/span> ?<\/span> 'true'<\/span> :<\/span> 'false'<\/span>);<\/span>\r\necho<\/span> '(three === san) '<\/span> .<\/span> (<\/span>createTestArray<\/span>(<\/span>'three'<\/span>)<\/span> ===<\/span> createTestArray<\/span>(<\/span>'san'<\/span>)<\/span> ?<\/span> 'true'<\/span> :<\/span> 'false'<\/span>);<\/span>\r\n\r\necho<\/span> '(three === three) '<\/span> .<\/span> (<\/span>createTestArray<\/span>(<\/span>'three'<\/span>)<\/span> ===<\/span> createTestArray<\/span>(<\/span>'three'<\/span>)<\/span> ?<\/span> 'true'<\/span> :<\/span> 'false'<\/span>);<\/span>\r\necho<\/span> '(san === san) '<\/span> .<\/span> (<\/span>createTestArray<\/span>(<\/span>'san'<\/span>)<\/span> ===<\/span> createTestArray<\/span>(<\/span>'san'<\/span>)<\/span> ?<\/span> 'true'<\/span> :<\/span> 'false'<\/span>);<\/span>\r\n<\/code><\/pre>\n
(<\/span>three<\/span> <<\/span> san<\/span>)<\/span> :<\/span> false<\/span>\r\n(<\/span>three<\/span> ><\/span> san<\/span>)<\/span> :<\/span> false<\/span>\r\n(<\/span>three<\/span> ===<\/span> san<\/span>)<\/span> :<\/span> false<\/span>\r\n\r\n(<\/span>three<\/span> ===<\/span> three<\/span>)<\/span> :<\/span> true<\/span>\r\n(<\/span>san<\/span> ===<\/span> san<\/span>)<\/span> :<\/span> true<\/span>\r\n<\/code><\/pre>\n
\u5728\u5177\u6709\u4e0d\u540c\u7ed3\u6784\u7684\u5173\u8054\u6570\u7ec4\u4e4b\u95f4\u8fdb\u884c\u5927\u5c0f\u6bd4\u8f83\u90fd\u4f1a\u5f97\u5230false\uff0c\u7b80\u5355\u7684\u6bd4\u8f83\u4e0d\u80fd\u8fdb\u884c\u6392\u5e8f\u3002\u6211\u4eec\u5c1d\u8bd5\u5bf9\u5305\u542b\u8fd9\u79cd\u5173\u8054\u6570\u7ec4\u4f5c\u4e3a\u5217\u8868\u7684\u6570\u7ec4\u4f7f\u7528array_unique\u3002<\/p>\n
$keyNameList<\/span> =<\/span> [<\/span>\r\n    'three'<\/span>,<\/span>\r\n    'san'<\/span>,<\/span>\r\n];<\/span>\r\n\r\n$testArrayList<\/span> =<\/span> [];<\/span>\r\nfor<\/span> (<\/span>$i<\/span> =<\/span> 0<\/span>;<\/span> $i<\/span> <<\/span> 30<\/span>;<\/span> $i<\/span>++<\/span>)<\/span> {<\/span>\r\n    $testArrayList<\/span>[]<\/span> =<\/span> createTestArray<\/span>(<\/span>$keyNameList<\/span>[<\/span>rand<\/span>(<\/span>0<\/span>,<\/span> 1<\/span>)]);<\/span>\r\n}<\/span>\r\n\r\nprint_r<\/span>(<\/span>array_unique<\/span>(<\/span>$testArrayList<\/span>,<\/span> SORT_REGULAR<\/span>));<\/span>\r\n<\/code><\/pre>\n
Array<\/span>\r\n(<\/span>\r\n    [<\/span>0<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>one<\/span>]<\/span> =><\/span> 1<\/span>\r\n            [<\/span>two<\/span>]<\/span> =><\/span> 2<\/span>\r\n            [<\/span>san<\/span>]<\/span> =><\/span> 3<\/span>\r\n        )<\/span>\r\n    [<\/span>1<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>one<\/span>]<\/span> =><\/span> 1<\/span>\r\n            [<\/span>two<\/span>]<\/span> =><\/span> 2<\/span>\r\n            [<\/span>san<\/span>]<\/span> =><\/span> 3<\/span>\r\n        )<\/span>\r\n    [<\/span>3<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>one<\/span>]<\/span> =><\/span> 1<\/span>\r\n            [<\/span>two<\/span>]<\/span> =><\/span> 2<\/span>\r\n            [<\/span>three<\/span>]<\/span> =><\/span> 3<\/span>\r\n        )<\/span>\r\n    [<\/span>18<\/span>]<\/span> =><\/span> Array<\/span>\r\n        (<\/span>\r\n            [<\/span>one<\/span>]<\/span> =><\/span> 1<\/span>\r\n            [<\/span>two<\/span>]<\/span> =><\/span> 2<\/span>\r\n            [<\/span>three<\/span>]<\/span> =><\/span> 3<\/span>\r\n        )<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u6709\u4e00\u4e9b\u786e\u5b9e\u6d88\u5931\u4e86\uff0c\u4f46\u4ecd\u7136\u53ef\u4ee5\u786e\u8ba4\u91cd\u590d\u7684\u5143\u7d20\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n
\u4e0d\u4f7f\u7528array_unique\u6765\u5220\u9664\u91cd\u590d\u5143\u7d20
\n\u5728\u53bb\u9664\u5177\u6709\u4e0d\u540c\u7ed3\u6784\u7684\u5173\u8054\u6570\u7ec4\u5143\u7d20\u7684\u91cd\u590d\u65f6\uff0c\u6211\u8ba4\u4e3a\u4e0d\u4f7f\u7528array_unique\u5e76\u81ea\u5df1\u5b9e\u73b0\u662f\u5b89\u5168\u7684\u3002\u867d\u7136\u8ba1\u7b97\u6210\u672c\u4f1a\u589e\u52a0\uff0c\u4f46\u4f60\u53ef\u4ee5\u4f7f\u7528foreach\u548cin_array\u76f8\u5bf9\u5bb9\u6613\u5730\u7f16\u5199\u5b83\u3002<\/p>\n
function<\/span> myArrayUnique<\/span>(<\/span>$array<\/span>)<\/span> {<\/span>\r\n    $uniqueArray<\/span> =<\/span> [];<\/span>\r\n    foreach<\/span>(<\/span>$array<\/span> as<\/span> $key<\/span> =><\/span> $value<\/span>)<\/span> {<\/span>\r\n        if<\/span> (<\/span>!<\/span>in_array<\/span>(<\/span>$value<\/span>,<\/span> $uniqueArray<\/span>))<\/span> {<\/span>\r\n            $uniqueArray<\/span>[<\/span>$key<\/span>]<\/span> =<\/span> $value<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n    return<\/span> $uniqueArray<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6b64\u5916\uff0c\u5982\u679c\u4e0d\u9700\u8981\u952e\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528array_reduce\u548cin_array\u8fdb\u884c\u7f16\u5199\u3002\u7531\u4e8e\u5728\u53bb\u9664\u91cd\u590d\u9879\u7684\u60c5\u51b5\u4e0b\u901a\u5e38\u4e0d\u9700\u8981\u952e\u503c\uff0c\u56e0\u6b64\u8fd9\u79cd\u65b9\u5f0f\u53ef\u80fd\u66f4\u52a0\u4f18\u96c5\u3002<\/p>\n
$uniqueArray<\/span> =<\/span> array_reduce<\/span>(<\/span>$array<\/span>,<\/span> function<\/span>(<\/span>$carry<\/span>,<\/span> $item<\/span>)<\/span> {<\/span>\r\n    if<\/span> (<\/span>!<\/span>in_array<\/span>(<\/span>$item<\/span>,<\/span> $carry<\/span>))<\/span> {<\/span>\r\n        $carry<\/span>[]<\/span> =<\/span> $item<\/span>;<\/span>\r\n    }<\/span>\r\n    return<\/span> $carry<\/span>;<\/span>\r\n},<\/span> []);<\/span>\r\n<\/code><\/pre>\n
\u6700\u540e\u975e\u5e38\u611f\u8c22\u9605\u8bfb\u81f3\u6b64\uff01\u683c\u4f26\u5409\u7684\u5723\u8bde\u5012\u6570\u65e5\u8fd8\u5c06\u7ee7\u7eed\uff0c\u656c\u8bf7\u671f\u5f85\u5e76\u591a\u591a\u652f\u6301\u3002<\/p>\n
[\u524d\u65e5]12\/7\u65e5 raitome: \u5c1d\u8bd5\u4f7f\u7528\u6700\u65b0\u7248\u7684Spine
\nhttps:\/\/qiita.com\/raitome\/items\/5ae1fce0bb4fc68fc796<\/p>\n
Unity\u7684\u8d1f\u8377\u524a\u51cf\uff0c\u4ece12\u67089\u65e5\u5f00\u59cb\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
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