{"id":47337,"date":"2024-12-02T08:30:33","date_gmt":"2024-12-02T00:30:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47337\/"},"modified":"2024-12-02T08:30:33","modified_gmt":"2024-12-02T00:30:33","slug":"php-%e5%87%bd%e6%95%b0%e5%90%8d%e7%9a%84%e6%9c%80%e5%a4%a7%e9%95%bf%e5%ba%a6%e9%99%90%e5%88%b6%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47337\/","title":{"rendered":"PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f<\/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\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f\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\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u4e3a 255 \u4e2a\u5b57\u7b26\uff0c\u5305\u62ec\u7279\u6b8a\u5b57\u7b26\u3002\u4ee5\u4e0b\u4e8b\u9879\u9700\u6ce8\u610f\uff1a1. \u51fd\u6570\u540d\u4ee5\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\uff1b2. \u51fd\u6570\u540d\u533a\u5206\u5927\u5c0f\u5199\uff1b3. \u5efa\u8bae\u51fd\u6570\u540d\u7b80\u77ed\u800c\u63cf\u8ff0\u6027\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729911708671c5b9c86ea2.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u540d\u957f\u5ea6\u9650\u5236<\/strong><\/p>\n<p>PHP \u51fd\u6570\u540d\u7684\u957f\u5ea6\u9650\u5236\u4e3a <strong>255 \u4e2a\u5b57\u7b26<\/strong>\uff0c\u5305\u62ec\u4e0b\u5212\u7ebf (_) \u548c\u7f8e\u5143\u7b26\u53f7 ($) \u7b49\u7279\u6b8a\u5b57\u7b26\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86 PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\uff1a<\/p>\n<pre>&lt;?php\n\/\/ \u521b\u5efa\u4e00\u4e2a\u8d85\u8fc7 255 \u4e2a\u5b57\u7b26\u957f\u5ea6\u7684\u51fd\u6570\u540d\n$functionName = 'this_is_a_function_name_with_more_than_255_characters_and_it_will_cause_an_error';\n\n\/\/ \u5c1d\u8bd5\u8c03\u7528\u8d85\u8fc7\u957f\u5ea6\u9650\u5236\u7684\u51fd\u6570\u540d\n$functionName(); \/\/ \u629b\u51fa\u9519\u8bef\n?&gt;<\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>Fatal error: Function name must be less than 256 characters in length<\/pre>\n<p><strong>\u5176\u4ed6\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u51fd\u6570\u540d\u5fc5\u987b\u4ee5\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\u3002<\/li>\n<li>\u51fd\u6570\u540d\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u548c\u7f8e\u5143\u7b26\u53f7\u3002<\/li>\n<li>PHP \u5bf9\u51fd\u6570\u540d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/li>\n<li>\u5efa\u8bae\u4f7f\u7528\u7b80\u77ed\u800c\u63cf\u8ff0\u6027\u7684\u51fd\u6570\u540d\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aPHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f\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":"<p>PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f \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\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u662f\u4ec0\u4e48\uff1f\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\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\u4e3a 255 \u4e2a\u5b57\u7b26\uff0c\u5305\u62ec\u7279\u6b8a\u5b57\u7b26\u3002\u4ee5\u4e0b\u4e8b\u9879\u9700\u6ce8\u610f\uff1a1. \u51fd\u6570\u540d\u4ee5\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\uff1b2. \u51fd\u6570\u540d\u533a\u5206\u5927\u5c0f\u5199\uff1b3. \u5efa\u8bae\u51fd\u6570\u540d\u7b80\u77ed\u800c\u63cf\u8ff0\u6027\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002 PHP \u51fd\u6570\u540d\u957f\u5ea6\u9650\u5236 PHP \u51fd\u6570\u540d\u7684\u957f\u5ea6\u9650\u5236\u4e3a 255 \u4e2a\u5b57\u7b26\uff0c\u5305\u62ec\u4e0b\u5212\u7ebf (_) \u548c\u7f8e\u5143\u7b26\u53f7 ($) \u7b49\u7279\u6b8a\u5b57\u7b26\u3002 \u5b9e\u6218\u6848\u4f8b \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86 PHP \u51fd\u6570\u540d\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\uff1a &lt;?php \/\/ \u521b\u5efa\u4e00\u4e2a\u8d85\u8fc7 255 \u4e2a\u5b57\u7b26\u957f\u5ea6\u7684\u51fd\u6570\u540d $functionName = &#8216;this_is_a_function_name_with_more_than_255_characters_and_it_will_cause_an_error&#8217;; \/\/ \u5c1d\u8bd5\u8c03\u7528\u8d85\u8fc7\u957f\u5ea6\u9650\u5236\u7684\u51fd\u6570\u540d $functionName(); \/\/ \u629b\u51fa\u9519\u8bef ?&gt; \u8f93\u51fa\uff1a Fatal error: Function name must be less than 256 characters in length \u5176\u4ed6\u6ce8\u610f\u4e8b\u9879 \u51fd\u6570\u540d\u5fc5\u987b\u4ee5\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf\u5f00\u5934\u3002 \u51fd\u6570\u540d\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u548c\u7f8e\u5143\u7b26\u53f7\u3002 [&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-47337","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47337","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=47337"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47337\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47337"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47337"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}