{"id":270423,"date":"2024-05-16T12:29:30","date_gmt":"2024-05-16T04:29:30","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/270423.html"},"modified":"2024-05-16T12:29:37","modified_gmt":"2024-05-16T04:29:37","slug":"php-%e9%a1%b9%e7%9b%ae%e4%bb%a3%e7%a0%81%e5%a6%82%e4%bd%95%e5%8e%bb%e6%8e%89-bom-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/270423.html","title":{"rendered":"php \u9879\u76ee\u4ee3\u7801\u5982\u4f55\u53bb\u6389 bom"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24183937\/dffb9f15-70d7-4a39-9022-e7fc3ba05a2f.webp\" alt=\"php \u9879\u76ee\u4ee3\u7801\u5982\u4f55\u53bb\u6389 bom\" \/><\/p>\n<p><p><strong>PHP\u9879\u76ee\u4ee3\u7801\u53bb\u9664BOM\u7684\u5173\u952e\u5728\u4e8e\u7406\u89e3BOM\u3001\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5de5\u5177\u8fdb\u884c\u6279\u91cf\u5904\u7406\u3001\u4ee5\u53ca\u901a\u8fc7\u7f16\u5199\u811a\u672c\u81ea\u52a8\u5316\u5904\u7406\u3002<\/strong> \u5176\u4e2d\uff0c\u7406\u89e3BOM\u7684\u672c\u8d28\u662f\u8981\u8fdb\u884c\u6709\u6548\u7684\u5904\u7406\u3002\u5b57\u8282\u987a\u5e8f\u6807\u8bb0\uff08BOM\uff09\u662f\u4f4d\u4e8e\u6587\u4ef6\u5f00\u5934\u7684\u51e0\u4e2a\u5b57\u8282\uff0c\u7528\u4e8e\u6807\u793a\u6587\u4ef6\u662f\u4ee5\u54ea\u79cd\u5b57\u8282\u5e8f\u5b58\u50a8\u7684\u3002\u5728PHP\u4e2d\uff0cBOM\u53ef\u80fd\u5bfc\u81f4\u8f93\u51fa\u65f6\u51fa\u73b0\u9519\u8bef\uff0c\u6bd4\u5982\u5728\u53d1\u9001\u5934\u4fe1\u606f\u4e4b\u524d\u4e0d\u5c0f\u5fc3\u8f93\u51fa\u4e86BOM\uff0c\u4f1a\u5bfc\u81f4PHP\u62a5\u201cheaders already sent\u201d\u9519\u3002\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53bb\u9664PHP\u9879\u76ee\u4ee3\u7801\u4e2d\u7684BOM\u6210\u4e3a\u4e86\u4e00\u4e2a\u5fc5\u8981\u7684\u6b65\u9aa4\u3002<\/p>\n<\/p>\n<p><p>\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u6df1\u5165\u63a2\u8ba8\u5982\u4f55\u6709\u6548\u53bb\u9664BOM\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u7406\u89e3BOM<\/h3>\n<\/p>\n<p><p>\u5b57\u8282\u987a\u5e8f\u6807\u8bb0\uff08Byte Order Mark, BOM\uff09\u662f\u7528\u4e8e\u6807\u8bc6\u6587\u4ef6\u662f\u5927\u7aef\u5b57\u8282\u5e8f\u8fd8\u662f\u5c0f\u7aef\u5b57\u8282\u5e8f\u3002\u5c24\u5176\u662f\u5728UTF-8\u7f16\u7801\u7684\u6587\u4ef6\u4e2d\uff0cBOM\uff08\u901a\u5e38\u662fEF BB BF\uff09\u7528\u4e8e\u6807\u793a\u6587\u4ef6\u5f00\u59cb\u5904\u3002\u5c3d\u7ba1UTF-8\u4e0d\u9700\u8981BOM\u6765\u8bc6\u522b\u5b57\u8282\u987a\u5e8f\uff0c\u4f46\u67d0\u4e9b\u7f16\u8f91\u5668\u6216\u7cfb\u7edf\u5728\u6587\u4ef6\u5f00\u59cb\u5904\u52a0\u5165BOM\u4ee5\u8bc6\u522b\u6587\u4ef6\u7f16\u7801\u7c7b\u578b\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5de5\u5177\u53bb\u9664BOM<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u5982Notepad++\u3001UltraEdit\u7b49\u6587\u672c\u7f16\u8f91\u5668\u53ef\u4ee5\u624b\u52a8\u53bb\u9664BOM\u3002\u4ee5Notepad++\u4e3a\u4f8b\uff0c\u4f60\u53ef\u4ee5\u6253\u5f00\u6587\u4ef6\u540e\u9009\u62e9\u201c\u7f16\u7801\u201d\uff08<em>Encoding<\/em>\uff09\u83dc\u5355\u4e2d\u7684\u201c\u4ee5UTF-8\u65e0BOM\u683c\u5f0f\u7f16\u7801\u201d\uff08<em>Encode in UTF-8 without BOM<\/em>\uff09\u9009\u9879\uff0c\u7136\u540e\u4fdd\u5b58\u6587\u4ef6\u3002\u5bf9\u4e8e\u6279\u91cf\u6587\u4ef6\uff0c\u53ef\u4ee5\u901a\u8fc7\u63d2\u4ef6\u6216\u8005\u5b8f\u547d\u4ee4\u6765\u5b9e\u73b0\u3002<\/p>\n<\/p>\n<ol>\n<li>\u6253\u5f00Notepad++\uff0c\u901a\u8fc7\u201c\u6587\u4ef6\u201d-&gt;\u201c\u6253\u5f00\u201d\u8bbe\u5b9a\u9009\u62e9\u591a\u4e2a\u9700\u8981\u53bb\u9664BOM\u7684\u6587\u4ef6\u3002<\/li>\n<li>\u9009\u62e9\u201c\u641c\u7d22\u201d-&gt;\u201c\u67e5\u627e\u201d\u4e2d\u7684\u201c\u66ff\u6362\u201d\u6807\u7b7e\uff0c\u8f93\u5165\u9700\u8981\u67e5\u627e\u7684BOM\u5b57\u7b26\u5e76\u5c06\u66ff\u6362\u5b57\u6bb5\u7559\u7a7a\uff0c\u5e94\u7528\u4e8e\u6240\u6709\u6253\u5f00\u7684\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p><h3>\u4e09\u3001\u7f16\u5199\u811a\u672c\u6279\u91cf\u53bb\u9664BOM<\/h3>\n<\/p>\n<p><p>\u5bf9\u4e8e\u5927\u91cf\u7684PHP\u6587\u4ef6\uff0c\u624b\u52a8\u53bb\u9664BOM\u975e\u5e38\u8017\u65f6\u4e14\u5bb9\u6613\u9057\u6f0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u7f16\u5199\u811a\u672c\u81ea\u52a8\u5316\u5904\u7406\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-php\">&lt;?php<\/p>\n<p>$dir = &#039;.\/&#039;; \/\/ \u8bbe\u7f6e\u626b\u63cf\u76ee\u5f55<\/p>\n<p>$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir));<\/p>\n<p>foreach ($files as $file) {<\/p>\n<p>    if ($file-&gt;isFile()) {<\/p>\n<p>        $contents = file_get_contents($file);<\/p>\n<p>        if (substr($contents, 0, 3) == pack(&quot;CCC&quot;, 0xef, 0xbb, 0xbf)) {<\/p>\n<p>            $contents = substr($contents, 3);<\/p>\n<p>            file_put_contents($file, $contents);<\/p>\n<p>            echo &quot;\u79fb\u9664BOM: {$file}\\n&quot;;<\/p>\n<p>        }<\/p>\n<p>    }<\/p>\n<p>}<\/p>\n<p>?&gt;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u8fd9\u4e2a\u811a\u672c\u8bbe\u7f6e\u76ee\u5f55\uff0c\u9012\u5f52\u67e5\u627e\u6240\u6709\u6587\u4ef6\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u6587\u4ef6\uff0c\u68c0\u67e5\u662f\u5426\u5b58\u5728BOM\uff0c\u5982\u679c\u5b58\u5728\uff0c\u5219\u53bb\u9664BOM\u5e76\u4fdd\u5b58\u6587\u4ef6\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u907f\u514d\u5728\u672a\u6765\u7684\u4ee3\u7801\u4e2d\u5f15\u5165BOM<\/h3>\n<\/p>\n<p><p><strong>\u53bb\u9664\u73b0\u6709\u4ee3\u7801\u4e2d\u7684BOM\u53ea\u89e3\u51b3\u4e86\u5f53\u524d\u7684\u95ee\u9898\uff0c\u9632\u6b62\u672a\u6765\u4ee3\u7801\u4e2d\u51fa\u73b0BOM\u540c\u6837\u91cd\u8981\u3002<\/strong><\/p>\n<\/p>\n<ol>\n<li><strong>\u4f7f\u7528\u6807\u51c6\u5316\u7684\u5f00\u53d1\u5de5\u5177\u914d\u7f6e\uff1a<\/strong> \u786e\u4fdd\u6240\u6709\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u7684\u73af\u5883\u548c\u7f16\u8f91\u5668\u8bbe\u7f6e\u4e00\u81f4\uff0c\u7279\u522b\u662f\u6587\u4ef6\u7f16\u7801\u8bbe\u7f6e\uff0c\u4ee5\u9632\u6b62BOM\u7684\u518d\u6b21\u51fa\u73b0\u3002<\/li>\n<li><strong><a href=\"https:\/\/docs.pingcode.com\/code-review\" target=\"_blank\">\u4ee3\u7801\u5ba1\u67e5<\/a>\uff1a<\/strong> \u901a\u8fc7\u4ee3\u7801\u5ba1\u67e5\u8fc7\u7a0b\u4e2d\u52a0\u5f3a\u5bf9\u4e8e\u6587\u4ef6\u7f16\u7801\u7684\u68c0\u67e5\uff0c\u53ef\u4ee5\u6709\u6548\u907f\u514d\u56e0\u6587\u4ef6\u7f16\u7801\u95ee\u9898\u5bfc\u81f4\u7684\u9519\u8bef\u6216\u8b66\u544a\u3002<\/li>\n<\/ol>\n<p><p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u6709\u6548\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684BOM\uff0c\u4e5f\u53ef\u4ee5\u4e3a\u56e2\u961f\u5185\u5efa\u7acb\u8d77\u89c4\u8303\u5316\u7684\u4ee3\u7801\u7ba1\u7406\u6d41\u7a0b\u3002\u5728\u65e5\u5e38\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u6301\u7eed\u5173\u6ce8\u6587\u4ef6\u7f16\u7801\u95ee\u9898\uff0c\u4ece\u6e90\u5934\u4e0a\u907f\u514dBOM\u7684\u51fa\u73b0\uff0c\u662f\u4fdd\u969c\u9879\u76ee\u8d28\u91cf\u548c\u56e2\u961f\u534f\u4f5c\u6548\u7387\u7684\u91cd\u8981\u63aa\u65bd\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u4ec0\u4e48\u662f BOM\uff1f\u5982\u4f55\u5224\u65ad\u9879\u76ee\u4ee3\u7801\u4e2d\u662f\u5426\u5b58\u5728 BOM\uff1f<\/strong><br \/>\nBOM \u662f Byte Order Mark \u7684\u7f29\u5199\uff0c\u5b83\u662f\u4e00\u79cd\u5b57\u8282\u5e8f\u6807\u8bb0\uff0c\u901a\u5e38\u7528\u4e8e\u8868\u793a\u6587\u672c\u6587\u4ef6\u7684\u7f16\u7801\u65b9\u5f0f\u3002\u8981\u5224\u65ad\u9879\u76ee\u4ee3\u7801\u4e2d\u662f\u5426\u5b58\u5728 BOM\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\uff0c\u5982 Notepad++\uff0c\u6253\u5f00\u4ee3\u7801\u6587\u4ef6\u5e76\u67e5\u770b\u6587\u4ef6\u7684\u5f00\u5934\u662f\u5426\u6709\u4e00\u4e9b\u7279\u6b8a\u5b57\u7b26\u6216\u4e71\u7801\u3002<\/p>\n<p><strong>2. \u4e3a\u4ec0\u4e48\u9700\u8981\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684 BOM\uff1f<\/strong><br \/>\n\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684 BOM \u662f\u4e3a\u4e86\u907f\u514d\u5728\u89e3\u6790\u4ee3\u7801\u3001\u8f93\u51fa\u5185\u5bb9\u6216\u8fdb\u884c\u5176\u4ed6\u6587\u672c\u64cd\u4f5c\u65f6\u51fa\u73b0\u610f\u5916\u7684\u95ee\u9898\u3002\u6709\u4e9b\u670d\u52a1\u5668\u6216\u89e3\u6790\u5668\u53ef\u80fd\u4e0d\u652f\u6301 BOM\uff0c\u5982\u679c\u4ee3\u7801\u4e2d\u5b58\u5728 BOM\uff0c\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4ee3\u7801\u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c\u6216\u663e\u793a\u3002<\/p>\n<p><strong>3. \u5982\u4f55\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684 BOM\uff1f\u6709\u4ec0\u4e48\u63a8\u8350\u7684\u5de5\u5177\u6216\u65b9\u6cd5\uff1f<\/strong><br \/>\n\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684 BOM \u6709\u51e0\u79cd\u65b9\u6cd5\u3002\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\uff0c\u5982 Visual Studio Code \u6216 Sublime Text\uff0c\u5c06\u9879\u76ee\u4ee3\u7801\u6587\u4ef6\u7684\u7f16\u7801\u65b9\u5f0f\u66f4\u6539\u4e3a\u4e0d\u5e26 BOM \u7684\u683c\u5f0f\uff0c\u4f8b\u5982 UTF-8 without BOM\u3002\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u811a\u672c\u6216\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u4f8b\u5982 PHP \u7684 <code>pack()<\/code> \u51fd\u6570\u6216 <code>iconv<\/code> \u547d\u4ee4\uff0c\u5c06\u6587\u4ef6\u5185\u5bb9\u590d\u5236\u5230\u65b0\u7684\u6587\u4ef6\u4e2d\uff0c\u5e76\u786e\u4fdd\u65b0\u6587\u4ef6\u4e0d\u5e26 BOM\u3002<\/p>\n<p>\u63a8\u8350\u7684\u5de5\u5177\u662f Notepad++\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u65b9\u4fbf\u7684\u65b9\u5f0f\u6765\u53bb\u9664\u9879\u76ee\u4ee3\u7801\u4e2d\u7684 BOM\u3002\u6253\u5f00\u4ee3\u7801\u6587\u4ef6\u540e\uff0c\u5728\u83dc\u5355\u680f\u4e2d\u9009\u62e9 &quot;\u7f16\u7801&quot;\uff0c\u7136\u540e\u9009\u62e9 &quot;\u8f6c\u4e3a UTF-8 \u65e0 BOM&quot;\u3002\u8fd9\u5c06\u81ea\u52a8\u5c06\u6587\u4ef6\u4fdd\u5b58\u4e3a\u4e0d\u5e26 BOM \u7684 UTF-8 \u7f16\u7801\u3002\u8bb0\u5f97\u5728\u4fdd\u5b58\u4e4b\u524d\u5907\u4efd\u4ee3\u7801\u6587\u4ef6\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u4fee\u6539\u6216\u635f\u5931\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"PHP\u9879\u76ee\u4ee3\u7801\u53bb\u9664BOM\u7684\u5173\u952e\u5728\u4e8e\u7406\u89e3BOM\u3001\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5de5\u5177\u8fdb\u884c\u6279\u91cf\u5904\u7406\u3001\u4ee5\u53ca\u901a\u8fc7\u7f16\u5199\u811a\u672c\u81ea\u52a8\u5316\u5904\u7406\u3002 \u5176\u4e2d [&hellip;]","protected":false},"author":3,"featured_media":270431,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/270423"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=270423"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/270423\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/270431"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=270423"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=270423"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=270423"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}