{"id":47331,"date":"2024-12-02T09:10:26","date_gmt":"2024-12-02T01:10:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47331\/"},"modified":"2024-12-02T09:10:26","modified_gmt":"2024-12-02T01:10:26","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%bc%95%e7%94%a8%e5%92%8c%e5%85%8b%e9%9a%86%e7%9a%84%e5%8c%ba%e5%88%86","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47331\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206"},"content":{"rendered":"

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

PHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206<\/h1>\n

\u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0<\/span>\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300aPHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206\u300b<\/span>\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~<\/p>\n

PHP\u4e2d\u7684\u5f15\u7528\u548c\u514b\u9686\u90fd\u521b\u5efa\u4e86\u73b0\u6709\u53d8\u91cf\u7684\u526f\u672c\uff0c\u4f46\u5b83\u4eec\u7684\u65b9\u5f0f\u548c\u526f\u672c\u7684\u884c\u4e3a\u4e0d\u540c\uff1a\u5f15\u7528\uff1a\u4f7f\u7528 & \u64cd\u4f5c\u7b26\u521b\u5efa\u6307\u5411\u540c\u4e00\u5185\u5b58\u4f4d\u7f6e\u7684\u526f\u672c\uff0c\u5bf9\u4e00\u4e2a\u526f\u672c\u7684\u66f4\u6539\u4e5f\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002\u514b\u9686\uff1a\u4f7f\u7528 clone \u5173\u952e\u5b57\u521b\u5efa\u5177\u6709\u81ea\u5df1\u5185\u5b58\u7a7a\u95f4\u7684\u65b0\u5bf9\u8c61\u526f\u672c\uff0c\u5bf9\u4e00\u4e2a\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u4e2d\u5f15\u7528\u4e0e\u514b\u9686\u7684\u5dee\u5f02<\/h2>\n

\u5728 PHP \u4e2d\uff0c\u5f15\u7528\u548c\u514b\u9686\u662f\u5904\u7406\u53d8\u91cf\u7684\u91cd\u8981\u6982\u5ff5\uff0c\u4e24\u8005\u90fd\u6709\u52a9\u4e8e\u521b\u5efa\u5bf9\u73b0\u6709\u53d8\u91cf\u7684\u5176\u4ed6\u526f\u672c\u3002\u4f46\u662f\uff0c\u5b83\u4eec\u5728\u5982\u4f55\u521b\u5efa\u526f\u672c\u4ee5\u53ca\u521b\u5efa\u7684\u526f\u672c\u7684\u884c\u4e3a\u65b9\u9762\u5b58\u5728\u5173\u952e\u533a\u522b\u3002<\/p>\n

\u53d8\u91cf\u5f15\u7528<\/strong><\/p>\n

\u4f7f\u7528\u5f15\u7528 (&) \u64cd\u4f5c\u7b26\u521b\u5efa\u7684\u53d8\u91cf\u5f15\u7528\u6307\u5411\u540c\u4e00\u5185\u5b58\u4f4d\u7f6e\uff0c\u8fd9\u610f\u5473\u7740\u5bf9\u5176\u4e2d\u4e00\u4e2a\u53d8\u91cf\u6240\u505a\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u53d8\u91cf\u3002<\/p>\n

$a = 10;\n$b =& $a; \/\/ \u521b\u5efa\u4e00\u4e2a\u5bf9 $a \u7684\u5f15\u7528\n\n$a = 20;\n\necho $b; \/\/ \u8f93\u51fa 20<\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c$b<\/code> \u5f15\u7528\u4e86 $a<\/code>\uff0c\u56e0\u6b64\u5f53 $a<\/code> \u66f4\u65b0\u4e3a 20 \u65f6\uff0c$b<\/code> \u4e5f\u53cd\u6620\u4e86\u8fd9\u4e00\u53d8\u5316\u3002<\/p>\n
\u53d8\u91cf\u514b\u9686<\/strong><\/p>\n
\u4f7f\u7528 clone<\/code> \u5173\u952e\u5b57\u521b\u5efa\u7684\u526f\u672c\u662f\u4e00\u4e2a\u5bf9\u8c61\u7684\u65b0\u5b9e\u4f8b\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5728\u5185\u5b58\u4e2d\u5177\u6709\u81ea\u5df1\u7684\u7a7a\u95f4\u3002\u5bf9\u5176\u4e2d\u4e00\u4e2a\u526f\u672c\u8fdb\u884c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002<\/p>\n
class MyClass {\n    public $name;\n}\n\n$a = new MyClass();\n$a->name = \"John\";\n$b = clone $a; \/\/ \u521b\u5efa $a \u7684\u514b\u9686\n\n$a->name = \"Mary\";\n\necho $b->name; \/\/ \u8f93\u51fa \"John\"<\/pre>\n
\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c$b<\/code> \u514b\u9686\u81ea $a<\/code>\u3002\u56e0\u6b64\uff0c\u5373\u4f7f\u66f4\u6539\u4e86 $a<\/code> \u4e2d\u7684 name<\/code> \u5c5e\u6027\uff0c\u4f46 $b<\/code> \u4e2d\u7684 name<\/code> \u5c5e\u6027\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u5f15\u7528<\/strong> \u53ef\u4ee5\u7528\u4e8e\u4f18\u5316\u5185\u5b58\u4f7f\u7528\u5e76\u907f\u514d\u521b\u5efa\u5bf9\u8c61\u7684\u65b0\u5b9e\u4f8b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u51fd\u6570\u5904\u7406\u5927\u91cf\u7684\u5bf9\u8c61\uff0c\u5219\u901a\u8fc7\u5f15\u7528\u4f20\u9012\u8fd9\u4e9b\u5bf9\u8c61\u53ef\u4ee5\u8282\u7701\u65f6\u95f4\uff0c\u56e0\u4e3a\u5b83\u4e0d\u9700\u8981\u590d\u5236\u5bf9\u8c61\u3002<\/p>\n
\u514b\u9686<\/strong> \u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\u7684\u591a\u4e2a\u526f\u672c\uff0c\u8fd9\u4e9b\u526f\u672c\u5f7c\u6b64\u72ec\u7acb\uff0c\u5bf9\u4e00\u4e2a\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u5176\u4ed6\u526f\u672c\u3002\u4f8b\u5982\uff0c\u514b\u9686\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u5177\u6709\u4e0d\u540c\u72b6\u6001\u6216\u8bbe\u7f6e\u7684\u5bf9\u8c61\u6c60\u3002<\/p>\n
\u672c\u7bc7\u5173\u4e8e\u300aPHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206 \u6700\u8fd1\u53d1\u73b0\u4e0d\u5c11\u5c0f\u4f19\u4f34\u90fd\u5bf9\u6587\u7ae0\u5f88\u611f\u5174\u8da3\uff0c\u6240\u4ee5\u4eca\u5929\u7ee7\u7eed\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\uff0c\u672c\u6587\u300aPHP \u51fd\u6570\u4e2d\u5f15\u7528\u548c\u514b\u9686\u7684\u533a\u5206\u300b\u4e3b\u8981\u5185\u5bb9\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01\u5f53\u7136\u5982\u679c\u9605\u8bfb\u672c\u6587\u65f6\u5b58\u5728\u4e0d\u540c\u60f3\u6cd5\uff0c\u53ef\u4ee5\u5728\u8bc4\u8bba\u4e2d\u8868\u8fbe\uff0c\u4f46\u662f\u8bf7\u52ff\u4f7f\u7528\u8fc7\u6fc0\u7684\u63aa\u8f9e~ PHP\u4e2d\u7684\u5f15\u7528\u548c\u514b\u9686\u90fd\u521b\u5efa\u4e86\u73b0\u6709\u53d8\u91cf\u7684\u526f\u672c\uff0c\u4f46\u5b83\u4eec\u7684\u65b9\u5f0f\u548c\u526f\u672c\u7684\u884c\u4e3a\u4e0d\u540c\uff1a\u5f15\u7528\uff1a\u4f7f\u7528 & \u64cd\u4f5c\u7b26\u521b\u5efa\u6307\u5411\u540c\u4e00\u5185\u5b58\u4f4d\u7f6e\u7684\u526f\u672c\uff0c\u5bf9\u4e00\u4e2a\u526f\u672c\u7684\u66f4\u6539\u4e5f\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002\u514b\u9686\uff1a\u4f7f\u7528 clone \u5173\u952e\u5b57\u521b\u5efa\u5177\u6709\u81ea\u5df1\u5185\u5b58\u7a7a\u95f4\u7684\u65b0\u5bf9\u8c61\u526f\u672c\uff0c\u5bf9\u4e00\u4e2a\u526f\u672c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002 PHP \u4e2d\u5f15\u7528\u4e0e\u514b\u9686\u7684\u5dee\u5f02 \u5728 PHP \u4e2d\uff0c\u5f15\u7528\u548c\u514b\u9686\u662f\u5904\u7406\u53d8\u91cf\u7684\u91cd\u8981\u6982\u5ff5\uff0c\u4e24\u8005\u90fd\u6709\u52a9\u4e8e\u521b\u5efa\u5bf9\u73b0\u6709\u53d8\u91cf\u7684\u5176\u4ed6\u526f\u672c\u3002\u4f46\u662f\uff0c\u5b83\u4eec\u5728\u5982\u4f55\u521b\u5efa\u526f\u672c\u4ee5\u53ca\u521b\u5efa\u7684\u526f\u672c\u7684\u884c\u4e3a\u65b9\u9762\u5b58\u5728\u5173\u952e\u533a\u522b\u3002 \u53d8\u91cf\u5f15\u7528 \u4f7f\u7528\u5f15\u7528 (&) \u64cd\u4f5c\u7b26\u521b\u5efa\u7684\u53d8\u91cf\u5f15\u7528\u6307\u5411\u540c\u4e00\u5185\u5b58\u4f4d\u7f6e\uff0c\u8fd9\u610f\u5473\u7740\u5bf9\u5176\u4e2d\u4e00\u4e2a\u53d8\u91cf\u6240\u505a\u7684\u4efb\u4f55\u66f4\u6539\u90fd\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u53d8\u91cf\u3002 $a = 10; $b =& $a; \/\/ \u521b\u5efa\u4e00\u4e2a\u5bf9 $a \u7684\u5f15\u7528 $a = 20; echo $b; \/\/ \u8f93\u51fa 20 \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c$b \u5f15\u7528\u4e86 $a\uff0c\u56e0\u6b64\u5f53 $a \u66f4\u65b0\u4e3a 20 \u65f6\uff0c$b \u4e5f\u53cd\u6620\u4e86\u8fd9\u4e00\u53d8\u5316\u3002 \u53d8\u91cf\u514b\u9686 \u4f7f\u7528 clone \u5173\u952e\u5b57\u521b\u5efa\u7684\u526f\u672c\u662f\u4e00\u4e2a\u5bf9\u8c61\u7684\u65b0\u5b9e\u4f8b\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5728\u5185\u5b58\u4e2d\u5177\u6709\u81ea\u5df1\u7684\u7a7a\u95f4\u3002\u5bf9\u5176\u4e2d\u4e00\u4e2a\u526f\u672c\u8fdb\u884c\u7684\u66f4\u6539\u4e0d\u4f1a\u5f71\u54cd\u53e6\u4e00\u4e2a\u526f\u672c\u3002 class MyClass { public $name; } $a […]<\/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-47331","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47331","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=47331"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47331\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}