{"id":47262,"date":"2024-12-02T16:25:53","date_gmt":"2024-12-02T08:25:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47262\/"},"modified":"2024-12-02T16:25:53","modified_gmt":"2024-12-02T08:25:53","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%bc%95%e7%94%a8%e5%b9%b6%e8%ae%be%e7%bd%ae%e9%bb%98%e8%ae%a4%e5%80%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47262\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f"},"content":{"rendered":"

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

PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f<\/h1>\n

\u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

\u5728 PHP \u51fd\u6570\u4e2d\uff0c\u5f15\u7528\u53d8\u91cf\uff08\u4f7f\u7528 &\uff09\u53ef\u4fee\u6539\u4f20\u5165\u53d8\u91cf\u7684\u503c\uff0c\u800c\u9ed8\u8ba4\u53c2\u6570\u53ef\u4e3a\u7f3a\u5931\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff0cupdateCartItemQuantity \u51fd\u6570\u91c7\u7528\u4e00\u4e2a\u5f15\u7528\u53d8\u91cf\uff08&$cart\uff09\uff0c\u53ef\u4fee\u6539\u8d2d\u7269\u8f66\u9879\uff0c\u5e76\u6709\u4e00\u4e2a\u9ed8\u8ba4\u53c2\u6570\uff08$newQuantity = 1\uff09\uff0c\u672a\u63d0\u4f9b\u65f6\u5c06\u7269\u54c1\u6570\u91cf\u8bbe\u7f6e\u4e3a 1\u3002<\/p>\n

\"PHP<\/p>\n

\u5728 PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u5f15\u7528\u548c\u8bbe\u7f6e\u9ed8\u8ba4\u503c<\/strong><\/p>\n

\u5728 PHP \u4e2d\uff0c\u5f15\u7528\u662f\u4e00\u4e2a\u53d8\u91cf\u7684\u522b\u540d\uff0c\u8fd9\u610f\u5473\u7740\u5bf9\u5f15\u7528\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4f1a\u53cd\u5c04\u5230\u539f\u59cb\u53d8\u91cf\u4e2d\u3002\u8fd9\u5728\u51fd\u6570\u4e2d\u7279\u522b\u6709\u7528\uff0c\u53ef\u4ee5\u8ba9\u4f60\u4fee\u6539\u4f20\u5165\u53d8\u91cf\u7684\u503c\u3002<\/p>\n

\u4f7f\u7528\u5f15\u7528<\/strong><\/p>\n

\u8981\u521b\u5efa\u4e00\u4e2a\u5f15\u7528\uff0c\u53ef\u4ee5\u5728\u53d8\u91cf\u540d\u524d\u4f7f\u7528\u7b26\u53f7 &<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n

function incrementByReference(&$number) {\n  $number++;\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u53d8\u91cf $number<\/code> \u88ab\u4f20\u9012\u4e3a\u5f15\u7528\uff0c\u6240\u4ee5\u5bf9 $number<\/code> \u7684\u4efb\u4f55\u4fee\u6539\u90fd\u4f1a\u5f71\u54cd\u5230\u51fd\u6570\u5916\u7684\u539f\u59cb\u53d8\u91cf\u3002<\/p>\n
\u8bbe\u7f6e\u9ed8\u8ba4\u503c<\/strong><\/p>\n
\u5728 PHP \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u4e3a\u51fd\u6570\u7684\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u5728\u8c03\u7528\u51fd\u6570\u65f6\u672a\u63d0\u4f9b\u53c2\u6570\u503c\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002<\/p>\n
function multiplyBy($number, $multiplier = 1) {\n  return $number * $multiplier;\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c$multiplier<\/code> \u53c2\u6570\u5177\u6709\u9ed8\u8ba4\u503c 1<\/code>\uff0c\u56e0\u6b64\u5982\u679c\u5728\u8c03\u7528\u51fd\u6570\u65f6\u672a\u63d0\u4f9b\u6b64\u53c2\u6570\uff0c\u5219\u5b83\u5c06\u5728\u51fd\u6570\u4e2d\u8bbe\u7f6e\u4e3a 1<\/code>\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u548c\u9ed8\u8ba4\u503c\u66f4\u65b0\u8d2d\u7269\u8f66\u4e2d\u7684\u7269\u54c1\u6570\u91cf\uff1a<\/p>\n
function updateCartItemQuantity(&$cart, $itemId, $newQuantity = 1) {\n  \/\/ \u68c0\u67e5\u8d2d\u7269\u8f66\u4e2d\u662f\u5426\u6709\u8be5\u7269\u54c1\n  if (isset($cart[$itemId])) {\n    $cart[$itemId]['quantity'] = $newQuantity;\n  } else {\n    $cart[$itemId] = ['quantity' => $newQuantity];\n  }\n}\n\n\/\/ \u5b9e\u6218\u6848\u4f8b\n$cart = [];\nupdateCartItemQuantity($cart, 123, 3); \/\/ \u5c06\u7269\u54c1 ID \u4e3a 123 \u7684\u7269\u54c1\u6570\u91cf\u66f4\u65b0\u4e3a 3\nvar_dump($cart); \/\/ \u8f93\u51fa\u66f4\u65b0\u540e\u7684\u8d2d\u7269\u8f66\uff1a['123' => ['quantity' => 3]]<\/pre>\n
\u6ce8\u610f\uff1a<\/strong>\u4f20\u9012\u5f15\u7528\u53d8\u91cf\u65f6\uff0c\u52a1\u5fc5\u8c28\u614e\uff0c\u56e0\u4e3a\u5bf9\u5f15\u7528\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4f1a\u5f71\u54cd\u539f\u59cb\u53d8\u91cf\u3002<\/p>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f \u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u5e76\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 \u5728 PHP \u51fd\u6570\u4e2d\uff0c\u5f15\u7528\u53d8\u91cf\uff08\u4f7f\u7528 &\uff09\u53ef\u4fee\u6539\u4f20\u5165\u53d8\u91cf\u7684\u503c\uff0c\u800c\u9ed8\u8ba4\u53c2\u6570\u53ef\u4e3a\u7f3a\u5931\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff0cupdateCartItemQuantity \u51fd\u6570\u91c7\u7528\u4e00\u4e2a\u5f15\u7528\u53d8\u91cf\uff08&$cart\uff09\uff0c\u53ef\u4fee\u6539\u8d2d\u7269\u8f66\u9879\uff0c\u5e76\u6709\u4e00\u4e2a\u9ed8\u8ba4\u53c2\u6570\uff08$newQuantity = 1\uff09\uff0c\u672a\u63d0\u4f9b\u65f6\u5c06\u7269\u54c1\u6570\u91cf\u8bbe\u7f6e\u4e3a 1\u3002 \u5728 PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u5f15\u7528\u548c\u8bbe\u7f6e\u9ed8\u8ba4\u503c \u5728 PHP \u4e2d\uff0c\u5f15\u7528\u662f\u4e00\u4e2a\u53d8\u91cf\u7684\u522b\u540d\uff0c\u8fd9\u610f\u5473\u7740\u5bf9\u5f15\u7528\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4f1a\u53cd\u5c04\u5230\u539f\u59cb\u53d8\u91cf\u4e2d\u3002\u8fd9\u5728\u51fd\u6570\u4e2d\u7279\u522b\u6709\u7528\uff0c\u53ef\u4ee5\u8ba9\u4f60\u4fee\u6539\u4f20\u5165\u53d8\u91cf\u7684\u503c\u3002 \u4f7f\u7528\u5f15\u7528 \u8981\u521b\u5efa\u4e00\u4e2a\u5f15\u7528\uff0c\u53ef\u4ee5\u5728\u53d8\u91cf\u540d\u524d\u4f7f\u7528\u7b26\u53f7 &\u3002\u4f8b\u5982\uff1a function incrementByReference(&$number) { $number++; } \u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u53d8\u91cf $number \u88ab\u4f20\u9012\u4e3a\u5f15\u7528\uff0c\u6240\u4ee5\u5bf9 $number \u7684\u4efb\u4f55\u4fee\u6539\u90fd\u4f1a\u5f71\u54cd\u5230\u51fd\u6570\u5916\u7684\u539f\u59cb\u53d8\u91cf\u3002 \u8bbe\u7f6e\u9ed8\u8ba4\u503c \u5728 PHP \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u9ed8\u8ba4\u53c2\u6570\u4e3a\u51fd\u6570\u7684\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u5982\u679c\u5728\u8c03\u7528\u51fd\u6570\u65f6\u672a\u63d0\u4f9b\u53c2\u6570\u503c\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002 function multiplyBy($number, $multiplier = 1) { return $number * $multiplier; } \u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c$multiplier \u53c2\u6570\u5177\u6709\u9ed8\u8ba4\u503c 1\uff0c\u56e0\u6b64\u5982\u679c\u5728\u8c03\u7528\u51fd\u6570\u65f6\u672a\u63d0\u4f9b\u6b64\u53c2\u6570\uff0c\u5219\u5b83\u5c06\u5728\u51fd\u6570\u4e2d\u8bbe\u7f6e\u4e3a 1\u3002 \u5b9e\u6218\u6848\u4f8b \u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u5f15\u7528\u548c\u9ed8\u8ba4\u503c\u66f4\u65b0\u8d2d\u7269\u8f66\u4e2d\u7684\u7269\u54c1\u6570\u91cf\uff1a function updateCartItemQuantity(&$cart, $itemId, […]<\/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-47262","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47262","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=47262"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47262\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}