{"id":48318,"date":"2024-12-02T12:15:07","date_gmt":"2024-12-02T04:15:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48318\/"},"modified":"2024-12-02T12:15:07","modified_gmt":"2024-12-02T04:15:07","slug":"php%e5%87%bd%e6%95%b0%e5%b8%b8%e7%94%a8%e9%94%99%e8%af%af%e6%8e%a2%e5%9b%a0%e5%8f%8a%e8%a7%a3%e5%86%b3%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48318\/","title":{"rendered":"php\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>php\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848<\/h1>\n<p>\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aphp\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848\u300b<\/span>\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n<p>PHP\u51fd\u6570\u5e38\u89c1\u9519\u8bef\u53ca\u5176\u89e3\u51b3\u65b9\u6cd5\uff1a\u51fd\u6570\u672a\u5b9a\u4e49\uff1a\u5728\u4f7f\u7528\u51fd\u6570\u4e4b\u524d\u9700\u58f0\u660e\u6216\u5b9a\u4e49\u3002\u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d\uff1a\u4f20\u9012\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e0d\u4e00\u81f4\u3002\u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\uff1a\u4f20\u9012\u7684\u53c2\u6570\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u3002\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d\uff1a\u51fd\u6570\u8fd4\u56de\u7684\u503c\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u3002\u53d8\u91cf\u672a\u5b9a\u4e49\uff1a\u5728\u4f7f\u7528\u53d8\u91cf\u4e4b\u524d\u9700\u58f0\u660e\u6216\u8d4b\u503c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730013162671de7ea8ea30.jpg\" class=\"aligncenter\" title=\"php\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848\u63d2\u56fe\" alt=\"php\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848<\/strong><\/p>\n<h3>1. \u51fd\u6570\u672a\u5b9a\u4e49<\/h3>\n<p><strong>\u9519\u8bef\uff1a<\/strong><\/p>\n<pre>Fatal error: Call to undefined function foo()<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><br \/>\u5728\u4f7f\u7528\u51fd\u6570\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u5bf9\u5176\u8fdb\u884c\u58f0\u660e\u6216\u5b9a\u4e49\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<ul>\n<li>\u5728\u4f7f\u7528\u524d\u4f7f\u7528 <code>function<\/code> \u5173\u952e\u5b57\u58f0\u660e\u51fd\u6570\u3002<\/li>\n<li>\u5c06\u51fd\u6570\u5b9a\u4e49\u5230\u4e00\u4e2a\u5355\u72ec\u7684\u6587\u4ef6\u4e2d\uff0c\u5e76\u4f7f\u7528 <code>include<\/code> \u6216 <code>require<\/code> \u5c06\u5176\u5305\u542b\u5230\u5f53\u524d\u811a\u672c\u4e2d\u3002<\/li>\n<\/ul>\n<h3>2. \u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d<\/h3>\n<p><strong>\u9519\u8bef\uff1a<\/strong><\/p>\n<pre>Fatal error: Too few arguments to function foo()<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><br \/>\u51fd\u6570\u8c03\u7528\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><br \/>\u786e\u4fdd\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u6570\u91cf\u76f8\u5339\u914d\u3002<\/p>\n<h3>3. \u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d<\/h3>\n<p><strong>\u9519\u8bef\uff1a<\/strong><\/p>\n<pre>Warning: Parameter 1 to foo() expected to be a string, got integer<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><br \/>\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u7c7b\u578b\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><br \/>\u786e\u4fdd\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u7c7b\u578b\u76f8\u5339\u914d\u3002\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u8f6c\u6362\u51fd\u6570\uff08\u4f8b\u5982 <code>(int)<\/code>, <code>(string)<\/code>, <code>(float)<\/code>\uff09\u6765\u5f3a\u5236\u8f6c\u6362\u53c2\u6570\u7c7b\u578b\u3002<\/p>\n<h3>4. \u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d<\/h3>\n<p><strong>\u9519\u8bef\uff1a<\/strong><\/p>\n<pre>Fatal error: Return value of foo() must be a string, null returned<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><br \/>\u51fd\u6570\u8fd4\u56de\u7684\u503c\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u8fd4\u56de\u7c7b\u578b\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><br \/>\u786e\u4fdd\u51fd\u6570\u8fd4\u56de\u7684\u503c\u7c7b\u578b\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u8fd4\u56de\u7c7b\u578b\u76f8\u5339\u914d\u3002<\/p>\n<h3>5. \u53d8\u91cf\u672a\u5b9a\u4e49<\/h3>\n<p><strong>\u9519\u8bef\uff1a<\/strong><\/p>\n<pre>Notice: Undefined variable: $foo<\/pre>\n<p><strong>\u539f\u56e0\uff1a<\/strong><br \/>\u5728\u4f7f\u7528\u53d8\u91cf\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u5bf9\u5176\u8fdb\u884c\u58f0\u660e\u6216\u8d4b\u503c\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><br \/>\u5728\u4f7f\u7528\u524d\u4f7f\u7528 <code>$<\/code> \u7b26\u53f7\u58f0\u660e\u53d8\u91cf\u3002<\/p>\n<pre>$foo; \/\/ \u58f0\u660e\u53d8\u91cf $foo\n\u590d\u5236\u4ee3\u7801```\n\n### \u5b9e\u6218\u6848\u4f8b\n\n\u4ee5\u4e0b\u662f\u4e00\u4e2a\u6f14\u793a\u5982\u4f55\u89e3\u51b3\u4e0a\u8ff0\u9519\u8bef\u7684\u4ee3\u7801\u793a\u4f8b\uff1a\n<\/pre>\n<p>&lt;?php<\/p>\n<p>\/\/ \u89e3\u51b3\u51fd\u6570\u672a\u5b9a\u4e49\u7684\u9519\u8bef<br \/>function foo() {<\/p>\n<pre>return 'Hello world!';<\/pre>\n<p>}<\/p>\n<p>\/\/ \u89e3\u51b3\u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d\u7684\u9519\u8bef<br \/>foo(1, 2); \/\/ \u9519\u8bef\uff1a\u4f20\u9012\u4e86 2 \u4e2a\u53c2\u6570\uff0c\u4f46\u51fd\u6570\u58f0\u660e\u4e2d\u53ea\u6709 1 \u4e2a\u53c2\u6570<\/p>\n<p>\/\/ \u89e3\u51b3\u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\u7684\u9519\u8bef<br \/>foo(&#8216;hello&#8217;); \/\/ \u6b63\u786e<\/p>\n<p>\/\/ \u89e3\u51b3\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d\u7684\u9519\u8bef<br \/>function bar(): string {<\/p>\n<pre>return 1; \/\/ \u9519\u8bef\uff1a\u8fd4\u56de\u7c7b\u578b\u4e3a integer\uff0c\u4f46\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u4e3a string<\/pre>\n<p>}<\/p>\n<p>\/\/ \u89e3\u51b3\u53d8\u91cf\u672a\u5b9a\u4e49\u7684\u9519\u8bef<br \/>$foo = &#8216;Hello&#8217;; \/\/ \u58f0\u660e\u53d8\u91cf $foo<\/p>\n<p>?&gt;<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aphp\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848\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":"<p>php\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848 \u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u300aphp\u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848\u300b\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u6587\u7ae0\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01 PHP\u51fd\u6570\u5e38\u89c1\u9519\u8bef\u53ca\u5176\u89e3\u51b3\u65b9\u6cd5\uff1a\u51fd\u6570\u672a\u5b9a\u4e49\uff1a\u5728\u4f7f\u7528\u51fd\u6570\u4e4b\u524d\u9700\u58f0\u660e\u6216\u5b9a\u4e49\u3002\u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d\uff1a\u4f20\u9012\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e0d\u4e00\u81f4\u3002\u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\uff1a\u4f20\u9012\u7684\u53c2\u6570\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u3002\u8fd4\u56de\u503c\u7c7b\u578b\u4e0d\u5339\u914d\uff1a\u51fd\u6570\u8fd4\u56de\u7684\u503c\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u3002\u53d8\u91cf\u672a\u5b9a\u4e49\uff1a\u5728\u4f7f\u7528\u53d8\u91cf\u4e4b\u524d\u9700\u58f0\u660e\u6216\u8d4b\u503c\u3002 PHP \u51fd\u6570\u5e38\u7528\u9519\u8bef\u63a2\u56e0\u53ca\u89e3\u51b3\u65b9\u6848 1. \u51fd\u6570\u672a\u5b9a\u4e49 \u9519\u8bef\uff1a Fatal error: Call to undefined function foo() \u539f\u56e0\uff1a\u5728\u4f7f\u7528\u51fd\u6570\u4e4b\u524d\uff0c\u5fc5\u987b\u5148\u5bf9\u5176\u8fdb\u884c\u58f0\u660e\u6216\u5b9a\u4e49\u3002 \u89e3\u51b3\u65b9\u6848\uff1a \u5728\u4f7f\u7528\u524d\u4f7f\u7528 function \u5173\u952e\u5b57\u58f0\u660e\u51fd\u6570\u3002 \u5c06\u51fd\u6570\u5b9a\u4e49\u5230\u4e00\u4e2a\u5355\u72ec\u7684\u6587\u4ef6\u4e2d\uff0c\u5e76\u4f7f\u7528 include \u6216 require \u5c06\u5176\u5305\u542b\u5230\u5f53\u524d\u811a\u672c\u4e2d\u3002 2. \u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d \u9519\u8bef\uff1a Fatal error: Too few arguments to function foo() \u539f\u56e0\uff1a\u51fd\u6570\u8c03\u7528\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u6570\u91cf\u4e0d\u5339\u914d\u3002 \u89e3\u51b3\u65b9\u6848\uff1a\u786e\u4fdd\u51fd\u6570\u8c03\u7528\u4e2d\u4f20\u9012\u7684\u53c2\u6570\u6570\u91cf\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u6570\u91cf\u76f8\u5339\u914d\u3002 3. \u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d \u9519\u8bef\uff1a Warning: Parameter 1 to foo() expected to be a string, got integer \u539f\u56e0\uff1a\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u7c7b\u578b\u4e0d\u7b26\u5408\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u7c7b\u578b\u3002 \u89e3\u51b3\u65b9\u6848\uff1a\u786e\u4fdd\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u7c7b\u578b\u4e0e\u51fd\u6570\u58f0\u660e\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u7c7b\u578b\u76f8\u5339\u914d\u3002\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u8f6c\u6362\u51fd\u6570\uff08\u4f8b\u5982 [&hellip;]<\/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-48318","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48318","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=48318"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48318\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}