{"id":47858,"date":"2024-12-02T12:41:34","date_gmt":"2024-12-02T04:41:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47858\/"},"modified":"2024-12-02T12:41:34","modified_gmt":"2024-12-02T04:41:34","slug":"php-%e5%87%bd%e6%95%b0%e5%bc%95%e7%94%a8%e5%8f%82%e6%95%b0%e4%b8%8e%e9%97%ad%e5%8c%85%e7%9a%84%e4%ba%a4%e4%ba%92","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47858\/","title":{"rendered":"PHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92<\/h1>\n

\u5b66\u4e60\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300aPHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

PHP \u5141\u8bb8\u51fd\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\u53c2\u6570\u3002\u8fd9\u5141\u8bb8\u51fd\u6570\u4fee\u6539\u4f20\u9012\u7684\u53c2\u6570\uff0c\u800c\u4e0d\u662f\u4f20\u9012\u526f\u672c\u3002\u95ed\u5305\uff0c\u5373\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0a\u4e0b\u6587\u4e2d\u4f7f\u7528\u3002\u8fd9\u5141\u8bb8\u95ed\u5305\u64cd\u7eb5\u4f20\u9012\u7ed9\u5916\u90e8\u51fd\u6570\u7684\u53c2\u6570\u3002<\/p>\n

\u5f15\u7528\u53c2\u6570<\/strong><\/p>\n

\u5f53\u4e00\u4e2a\u53c2\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\u65f6\uff0c\u5728\u51fd\u6570\u5185\u5bf9\u5b83\u7684\u4fee\u6539\u4e5f\u4f1a\u4fee\u6539\u8c03\u7528\u65b9\u7684\u539f\u59cb\u53d8\u91cf\u3002\u8fd9\u662f\u901a\u8fc7\u4f7f\u7528 &<\/code> \u7b26\u53f7\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n

function change_by_reference(&$number) {\n  $number++;\n}<\/pre>\n
\u5728\u8c03\u7528\u6b64\u51fd\u6570\u65f6\uff0c$number<\/code> \u53c2\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\uff1a<\/p>\n
$number = 10;\nchange_by_reference($number);\necho $number; \/\/ \u8f93\u51fa\uff1a11<\/pre>\n
\u4e0e\u95ed\u5305\u4ea4\u4e92<\/strong><\/p>\n
\u95ed\u5305\u53ef\u4ee5\u8bbf\u95ee\u51fd\u6570\u5f15\u7528\u53c2\u6570\u3002\u8fd9\u610f\u5473\u7740\u95ed\u5305\u53ef\u4ee5\u4fee\u6539\u6216\u64cd\u7eb5\u8fd9\u4e9b\u53c2\u6570\u3002<\/p>\n
function create_closure_with_reference($array) {\n  return function() use (&$array) {\n    \/\/ \u8bbf\u95ee\u5e76\u4fee\u6539\u5f15\u7528\u53c2\u6570\n    $array[] = 5;\n  };\n}<\/pre>\n
\u5728\u8c03\u7528 create_closure_with_reference<\/code> \u51fd\u6570\u65f6\uff0c\u4f20\u9012\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n
$array = [];\n$closure = create_closure_with_reference($array);\n$closure();\nvar_dump($array); \/\/ \u8f93\u51fa\uff1a[0 => 5]<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4e00\u4e2a\u8ba1\u7b97\u8d2d\u7269\u7bee\u603b\u4ef7\u7684\u51fd\u6570\uff0c\u5176\u4e2d\u6bcf\u4e2a\u9879\u76ee\u90fd\u6709\u4e00\u4e2a\u6570\u91cf\u548c\u4ef7\u683c\u3002<\/p>\n
function calculate_total($items) {\n  $total = 0;\n  foreach ($items as &$item) {\n    \/\/ \u4ee5\u5f15\u7528\u65b9\u5f0f\u4fee\u6539\u7269\u54c1\u7684\u6570\u91cf\n    $item['quantity']--;\n    \/\/ \u7d2f\u52a0\u603b\u4ef7\n    $total += $item['quantity'] * $item['price'];\n  }\n  return $total;\n}<\/pre>\n
\u8c03\u7528\u6b64\u51fd\u6570\u65f6\uff0c$items<\/code> \u6570\u7ec4\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\uff0c\u8fd9\u6837\u51fd\u6570\u53ef\u4ee5\u4fee\u6539\u6bcf\u4e2a\u9879\u76ee\u7684\u6570\u91cf\uff1a<\/p>\n
$items = array(\n  array('name' => 'Item 1', 'quantity' => 2, 'price' => 10),\n  array('name' => 'Item 2', 'quantity' => 3, 'price' => 15)\n);\n\n$total = calculate_total($items);\nprint_r($items); \/\/ \u8f93\u51fa\uff1aArray ( [0] => Array ( [quantity] => 1 ) [1] => Array ( [quantity] => 2 ) )\necho $total; \/\/ \u8f93\u51fa\uff1a45<\/pre>\n
\u901a\u8fc7\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\u53c2\u6570\u81f3\u5173\u91cd\u8981\uff0c\u8fd9\u6837\u51fd\u6570\u624d\u80fd\u4fee\u6539\u539f\u59cb\u96c6\u5408\u3002\u5426\u5219\uff0c\u51fd\u6570\u5c06\u521b\u5efa\u96c6\u5408\u7684\u526f\u672c\uff0c\u4fee\u6539\u526f\u672c\u5bf9\u8c03\u7528\u65b9\u7684\u539f\u59cb\u53d8\u91cf\u6ca1\u6709\u5f71\u54cd\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aPHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92 \u5b66\u4e60\u6587\u7ae0\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300aPHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92\u300b\u5c06\u4f1a\u4ecb\u7ecd\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01 PHP \u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0e\u95ed\u5305\u7684\u4ea4\u4e92 \u7b80\u4ecb PHP \u5141\u8bb8\u51fd\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\u53c2\u6570\u3002\u8fd9\u5141\u8bb8\u51fd\u6570\u4fee\u6539\u4f20\u9012\u7684\u53c2\u6570\uff0c\u800c\u4e0d\u662f\u4f20\u9012\u526f\u672c\u3002\u95ed\u5305\uff0c\u5373\u533f\u540d\u51fd\u6570\uff0c\u53ef\u4ee5\u5728\u51fd\u6570\u5f15\u7528\u53c2\u6570\u4e0a\u4e0b\u6587\u4e2d\u4f7f\u7528\u3002\u8fd9\u5141\u8bb8\u95ed\u5305\u64cd\u7eb5\u4f20\u9012\u7ed9\u5916\u90e8\u51fd\u6570\u7684\u53c2\u6570\u3002 \u5f15\u7528\u53c2\u6570 \u5f53\u4e00\u4e2a\u53c2\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\u65f6\uff0c\u5728\u51fd\u6570\u5185\u5bf9\u5b83\u7684\u4fee\u6539\u4e5f\u4f1a\u4fee\u6539\u8c03\u7528\u65b9\u7684\u539f\u59cb\u53d8\u91cf\u3002\u8fd9\u662f\u901a\u8fc7\u4f7f\u7528 & \u7b26\u53f7\u6765\u5b9e\u73b0\u7684\u3002 function change_by_reference(&$number) { $number++; } \u5728\u8c03\u7528\u6b64\u51fd\u6570\u65f6\uff0c$number \u53c2\u6570\u4ee5\u5f15\u7528\u65b9\u5f0f\u4f20\u9012\uff1a $number = 10; change_by_reference($number); echo $number; \/\/ \u8f93\u51fa\uff1a11 \u4e0e\u95ed\u5305\u4ea4\u4e92 \u95ed\u5305\u53ef\u4ee5\u8bbf\u95ee\u51fd\u6570\u5f15\u7528\u53c2\u6570\u3002\u8fd9\u610f\u5473\u7740\u95ed\u5305\u53ef\u4ee5\u4fee\u6539\u6216\u64cd\u7eb5\u8fd9\u4e9b\u53c2\u6570\u3002 function create_closure_with_reference($array) { return function() use (&$array) { \/\/ \u8bbf\u95ee\u5e76\u4fee\u6539\u5f15\u7528\u53c2\u6570 $array[] = 5; }; } \u5728\u8c03\u7528 create_closure_with_reference \u51fd\u6570\u65f6\uff0c\u4f20\u9012\u4e00\u4e2a\u6570\u7ec4\uff1a $array = []; $closure = create_closure_with_reference($array); $closure(); […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47858","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47858"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47858\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}