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\u4f46\u82e5\u8981\u70ba\u6a5f\u5668\u7684\u5224\u65b7\u6f14\u7b97\u6cd5\u52a0\u5165\u9019\u65b9\u9762\u7684\u8cc7\u8a0a\uff0c\u5f97\u8981\u5230\u4e86\u8fd1\u5e74 AI \u9818\u57df\u8208\u8d77\u624d\u6bd4\u8f03\u6709\u53ef\u80fd\u9054\u6210\uff1b\u4e8c\u5341\u5e74\u524d\u53ef\u6c92\u6709\u985e\u795e\u7d93\u7db2\u8def\u53ef\u4ee5\u8b93\u6a5f\u5668\u5224\u65b7\u9019\u89e3\u78bc\u51fa\u4f86\u5408\u4e0d\u5408\u7406\uff0c\u6240\u4ee5\u53ea\u80fd\u9000\u800c\u6c42\u5176\u6b21\uff0c\u5229\u7528\u50b3\u7d71\u5bc6\u78bc\u5b78\u7684\u983b\u7387\u5206\u6790\u4f86\u5e6b\u52a9\u5224\u65b7\u3002\u5468\u601d\u535a\u63d0\u904e\u700f\u89bd\u5668\u6703\u70ba\u6c92\u6709\u6307\u5b9a\u7de8\u78bc\u7684\u7db2\u9801\u731c\u4e00\u500b\u7de8\u78bc\uff0c\u9019\u500b\u5224\u65b7\u73fe\u5728\u7684\u700f\u89bd\u5668\u88e1\u4f9d\u7136\u5b58\u5728\uff0c\u53ea\u662f\u8907\u96dc\u8a31\u591a\uff1a\u4f8b\u5982 Google Chrome \u66fe\u7d93\u4f7f\u7528\u904e ICU \u51fd\u5f0f\u5eab<\/a>\u4e2d\u7684\u7de8\u78bc\u731c\u6e2c\u529f\u80fd\uff0c\u5f8c\u4f86\u6539\u7528 Google \u81ea\u5bb6\u7684 Compact Encoding Detector<\/a> \u51fd\u5f0f\u5eab\u3002\u9019\u7a2e\u983b\u7387\u5206\u6790\u7531\u65bc\u65b9\u6cd5\u672c\u8eab\u7279\u6027\u7684\u95dc\u4fc2\u5e7e\u4e4e\u7121\u6cd5\u5c0d\u592a\u77ed\u7684\u5b57\u4e32\u4f7f\u7528\uff0c\u56e0\u6b64\u5e38\u5e38\u56e0\u70ba\u9019\u500b\u5224\u5b9a\u904e\u7a0b\u731c\u932f\u7de8\u78bc\uff0c\u800c\u4f7f\u5f97\u6587\u5b57\u88ab\u932f\u8aa4\u7684\u7de8\u78bc\u89e3\u8b80\u9020\u6210\u4e82\u78bc\u3002<\/p>\n\n\n\n

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\u4f7f\u7528\u9019\u4e9b\u5b57\u80fd\u89e3\u6c7a\u9019\u500b\u554f\u984c\u7684\u539f\u56e0\u5c31\u662f\uff0c\u5b83\u5011\u7684 EUC-JP \u7de8\u78bc\u88e1\u90fd\u6703\u6709\u4e00\u822c Shift-JIS \u4e0d\u6703\u51fa\u73fe\u7684\u4f4d\u5143\u7d44\u7d44\u5408 (\u300c\u3042\u3044\u3046\u3048\u304a\u300d\u7684\u9996\u4f4d\u5143\u7d44\u662f 0xA4\uff0c\u300c\u7709\u5e45\u300d\u5169\u5b57\u7684\u672b\u4f4d\u5143\u7d44\u662f 0xFD\uff0c\u300c\u7f8e\u4e73\u300d\u5169\u5b57\u5247\u5206\u5225\u6709 0xFE \u548c 0xFD)\uff0c\u56e0\u6b64\u5f8c\u7aef\u7a0b\u5f0f\u4fbf\u4e0d\u6703\u5c07\u8868\u55ae\u6587\u5b57\u5224\u65b7\u70ba Shift-JIS \u800c\u662f\u6b63\u78ba\u7684 EUC-JP \u4e86\u3002<\/p>\n\n\n\n

IsTextUnicode<\/h2>\n\n\n\n

\u540c\u6a23\u7684\u554f\u984c\u5728 Unicode \u4e0a\u4e5f\u662f\u5b58\u5728\u7684\u3002Unicode \u6700\u4e00\u958b\u59cb\u7684\u76ee\u6a19\u78ba\u5be6\u662f\u70ba\u4e86\u8981\u5b9a\u4e00\u500b\u6a19\u6e96\u4f7f\u9019\u4e16\u754c\u4e0a\u5404\u500b\u8a9e\u8a00\u7684\u4f7f\u7528\u8005\u90fd\u80fd\u6709\u4e00\u5957\u7d71\u4e00\u7684\u7de8\u78bc\u80fd\u5920\u4f7f\u7528\uff0c\u4f46\u5c31\u5982\u540c\u5468\u601d\u535a\u7684\u6587\u7ae0\u5f8c\u534a\u6240\u63d0\u5230\u7684\uff0cUnicode \u7684 code point \u548c\u5b83\u5011\u600e\u9ebc\u8f49\u63db\u6210\u4f4d\u5143\u7d44\u5132\u5b58\u662f\u5169\u56de\u4e8b\uff0c\u4e5f\u5c31\u662f\u8aaa\u6211\u5011\u53c8\u6709\u4e86\u53e6\u5916\u5f88\u591a\u7a2e\u4f4d\u5143\u7d44\u7684\u89e3\u91cb\u6cd5\uff0c\u800c\u5b83\u5011\u548c\u539f\u672c\u65e2\u5b58\u7684\u7de8\u78bc\u4e4b\u9593\u53ef\u4ee5\u4e0d\u76f8\u5bb9\uff0d\uff0d\u9019\u5c31\u6703\u51fa\u73fe\u50cf\u4e0a\u4e00\u7bc7\u88e1\u6211\u63d0\u904e\u7684\u90a3\u500b\u662f AA<\/code> \u9084\u662f\u4e2d\u6587\u5b57\u7684\u5224\u65b7\u554f\u984c\u4e86\u3002<\/p>\n\n\n\n

\u82f1\u6587\u7dad\u57fa\u767e\u79d1\u88e1\u6709\u9019\u9ebc\u4e00\u500b\u8a5e\u689d\u53eb Bush hid the facts<\/a>\uff0c\u8b1b\u7684\u4e26\u4e0d\u662f\u4ec0\u9ebc\u5e03\u5e0c\u85cf\u4e86\u4ec0\u9ebc\u4e8b\u5be6\u7684\u9670\u8b00\u8ad6\uff0c\u800c\u662f Windows \u5230 XP \u70ba\u6b62\u7684\u5167\u5efa\u8a18\u4e8b\u672c\u7684\u4e00\u500b\u7de8\u78bc\u5224\u65b7\u932f\u8aa4\uff1a\u7576\u4f60\u5c07\u9019\u53e5\u8a71\u4e00\u5171\u5341\u516b\u500b\u534a\u5f62\u5b57 (\u4e0d\u52a0\u53e5\u9ede\u63db\u884c) \u6253\u5165\u4e00\u500b\u65b0\u8a18\u4e8b\u672c\uff0c\u5132\u5b58\u95dc\u9589\u518d\u958b\u555f\u6642\uff0c\u5b83\u6703\u986f\u793a\u6210\u4e5d\u500b\u6f22\u5b57\uff1a\u300c\u7542<\/a>\u6873<\/a>\u6820<\/a>\u6469<\/a>\u7420<\/a>\u6568<\/a>\u6620<\/a>\u6361<\/a>\u7374<\/a>\u300d\u3002\u9019\u662f\u56e0\u70ba\uff0c\u8a18\u4e8b\u672c\u5167\u90e8\u662f\u4f7f\u7528\u4e00\u500b Windows API \u51fd\u6578\u53eb IsTextUnicode<\/a> \u4f86\u731c\u731c\u770b\u7d66\u5b9a\u7684\u9019\u4e32\u4f4d\u5143\u7d44\u6709\u6c92\u6709\u53ef\u80fd\u662f Unicode\uff0c\u800c\u9019\u5341\u516b\u500b\u4f4d\u5143\u7d44\u7684\u7d44\u5408\u82e5\u89e3\u91cb\u505a UTF-16 Little Endian \u6642\uff0c\u5168\u90e8\u90fd\u8b8a\u6210\u4e86\u4e2d\u6587\u5b57\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u9019\u5c31\u4f7f\u5f97 IsTextUnicode \u5224\u65b7\u300c\u9019\u770b\u8d77\u4f86\u50cf\u4e2d\u6587\uff0c\u6240\u4ee5\u5b83\u61c9\u8a72\u662f UTF16-LE\u300d\uff0c\u800c\u8a18\u4e8b\u672c\u7167\u5be6\u5448\u73fe\u51fa\u4f86\u800c\u5df2\u3002\u9019\u4e26\u4e0d\u53ea\u6709\u770b\u8d77\u4f86\u50cf\u4e2d\u6587\u7684\u72c0\u6cc1\u6703\u767c\u751f\uff1a\u6211\u5728 PTT \u4e0a\u5c31\u770b\u904e\u5169\u6b21\u540c\u6a23\u9019\u4e00\u500b\u554f\u984c\u51fa\u73fe\u904e\uff0c\u7b2c\u4e00\u500b (\u767c\u554f\u8005<\/a>\u3001\u56de\u61c9<\/a>\u3001\u6211\u7684\u56de\u61c9<\/a>) \u5224\u65b7\u6210\u4e86\u5370\u5ea6\u6587\uff0c\u7b2c\u4e8c\u500b (\u767c\u554f\u8005<\/a>\u3001\u6211\u7684\u56de\u61c9<\/a>) \u5224\u65b7\u6210\u4e86\u5343\u5206\u6bd4\u548c\u842c\u5206\u6bd4\u7b26\u865f\u30022<\/a><\/sup><\/p>\n\n\n\n

BOM<\/h2>\n\n\n\n

\u9019\u4e5f\u5c31\u662f\u70ba\u4ec0\u9ebc\uff0c\u5468\u601d\u535a\u7684\u6587\u7ae0\u5f8c\u534a\u6bb5\u6703\u7528\u90a3\u9ebc\u9577\u4e00\u6bb5\u7bc7\u5e45\u4ecb\u7d39 Unicode \u7684\u57fa\u672c\u89c0\u5ff5\u4ee5\u53ca\u7a0b\u5f0f\u8a2d\u8a08\u8005\u8981\u7528\u4ec0\u9ebc\u65b9\u5f0f\u53bb\u6b63\u78ba\u6a19\u8a18\u4f60\u7684\u6587\u5b57\u7de8\u78bc\uff1b\u9023\u6982\u5ff5\u4e0a\u53ea\u6709\u6587\u5b57\u7684\u300c\u7d14\u6587\u5b57\u6a94\u6848\u300d\u90fd\u8981\u585e\u4e00\u500b\u53eb\u505a BOM \u7684\u6771\u897f\u53bb\u8aaa\u300c\u6211\u9019\u6587\u5b57\u662f\u4f7f\u7528\u9019\u7a2e Unicode \u7de8\u78bc\u5132\u5b58\u7684\u300d\uff0c\u5426\u5247\uff1a<\/p>\n\n\n\n

\n

\u7b49\u5230\u67d0\u4e00\u5929\uff0c\u7576\u4ed6\u5011\u5beb\u7684\u5167\u5bb9\u4e0d\u7b26\u5408\u6240\u7528\u8a9e\u8a00\u7684\u5b57\u6bcd\u983b\u7387\u5206\u4f48\u6642\uff0cInternet Explorer\u5c31\u6703\u628a\u5b83\u8a8d\u6210\u97d3\u6587\u4f86\u986f\u793a\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u63d0\u5230 BOM \u5c31\u4f86\u7c21\u55ae\u88dc\u5145\u4e00\u4e0b\u95dc\u65bc\u9019\u500b\u5b57\u662f\u600e\u9ebc\u4f86\u7684\u597d\u4e86\uff1a\u9019\u500b\u5b57 U+FEFF \u6700\u4e00\u958b\u59cb\u7684\u7528\u9014\u662f\u300c\u96f6\u5bec\u5ea6\u4e0d\u65b7\u884c\u7a7a\u767d\u300d3<\/a><\/sup>\uff0c\u662f\u4e00\u500b\u9664\u4e86\u591a\u4e00\u500b\u96b1\u5f62\u5b57\u5728\u90a3\u88e1\u4e4b\u5916\u5c0d\u6392\u7248\u4ec0\u9ebc\u7684\u5b8c\u5168\u6c92\u6709\u5f71\u97ff\u7684\u300c\u5b57\u300d\uff0c\u800c\u4e14\u5c07\u5b83\u5b58\u6210 UTF-16 \u6642\u5169\u500b\u4f4d\u5143\u7d44\u662f\u4e0d\u540c\u7684\u3002\u4e5f\u662f\u56e0\u70ba\u9019\u4e9b\u6027\u8cea\uff0c\u624d\u6709\u4eba\u60f3\u5230\u628a\u5b83\u653e\u5728\u6587\u5b57\u6a94\u7684\u958b\u982d\u7576\u505a\u985e\u4f3c\u65bc\u8fa8\u8a8d\u6a94\u6848\u683c\u5f0f\u7684 Magic Number\uff0c\u4f86\u8868\u793a\u9019\u500b UTF-16 \u662f\u5927\u982d\u9084\u662f\u5c0f\u982d\u7de8\u78bc (\u9019\u5373\u662f\u5b83\u73fe\u5728\u7684\u540d\u5b57\u7684\u4f86\u6e90\uff1aByte Order Mark\uff0c\u4f4d\u5143\u7d44\u9806\u5e8f\u8a18\u865f)\u3002\u5f8c\u4f86 U+FEFF \u9019\u500b\u5b57\u6f14\u8b8a\u6210\u5c08\u9580\u7528\u4f86\u505a\u9019\u7a2e\u6a19\u8a18 (\u539f\u672c\u7684\u4e0d\u65b7\u884c\u7a7a\u767d\u7684\u7528\u9014\u73fe\u5728\u7d66\u4e86 U+2060 Word Joiner)\uff0c\u6240\u4ee5\u4f4d\u5143\u7d44\u53cd\u904e\u4f86\u7684 U+FFFE \u5c31\u88ab\u4fdd\u7559\uff0c\u4e0d\u5728\u9019\u500b\u4f4d\u7f6e\u5b9a\u7fa9\u5b57\uff0c\u4f7f\u5f97\u8aa4\u5224\u4f4d\u5143\u7d44\u9806\u5e8f\u7684\u6a5f\u6703\u964d\u5230\u6700\u4f4e\u3002<\/p>\n\n\n\n

\u5c0d\u65bc UTF-8\uff0c\u6216\u8a31\u7531\u65bc\u8f49\u63db\u7a0b\u5ea6\u6c92\u6709\u7279\u5225\u8655\u7406\uff0c\u6216\u8a31\u56e0\u70ba BOM \u985e\u4f3c\u65bc Magic Number \u7684\u7528\u6cd5\u800c\u932f\u8aa4\u5730\u8a8d\u70ba UTF-8 \u4e5f\u8981\u4f7f\u7528\u9019\u500b\u5b57\u505a\u6a19\u8a18\uff0cBOM \u5b57\u5143\u7684 UTF-8 \u8868\u793a 0xEF 0xBB 0xBF<\/code> \u4e5f\u6703\u51fa\u73fe\u5728\u5f88\u591a UTF-8 \u7de8\u78bc\u7684\u6587\u5b57\u6a94\u7684\u958b\u982d (\u50cf\u662f Windows \u5167\u5efa\u7684\u8a18\u4e8b\u672c\u5b58\u6210 UTF-8 \u6642\u5c31\u4e00\u5b9a\u6703\u52a0\u4e0a)\uff1bUnicode \u6a19\u6e96\u5141\u8a31\u4f46\u4e0d\u9f13\u52f5\uff0c\u7562\u7adf\u4e00\u4f86 UTF-8 \u672c\u4f86\u5c31\u4e0d\u9700\u8981\u9019\u6a23\u7684\u6a19\u8a18\uff0c\u4e8c\u4f86\u5176\u4f4d\u5143\u7d44\u7d44\u5408\u7684\u8a2d\u8a08\u4e0d\u5bb9\u6613\u5728\u5176\u4ed6 DBCS \u7de8\u78bc\u88e1\u51fa\u73fe\uff0c\u4e09\u4f86\u6709\u4e9b\u7a0b\u5f0f\u66f4\u662f\u9700\u8981\u4e0d\u52a0 BOM \u624d\u80fd\u6b63\u78ba\u904b\u4f5c\u3002\u6700\u5f8c\u9019\u4e00\u9ede\u6700\u60e1\u540d\u662d\u5f70\u7684\u4f8b\u5b50\u5c31\u662f PHP\uff1a\u5982\u679c\u8981\u4f7f\u7528 UTF-8 \u505a\u70ba PHP \u7a0b\u5f0f\u7684\u7de8\u78bc\u7684\u8a71\uff0c\u5fc5\u9808\u4e0d\u52a0 BOM \u6709\u4e9b\u529f\u80fd\u624d\u80fd\u6b63\u5e38\u904b\u4f5c\u3002\u9019\u4e00\u9ede\u751a\u81f3\u5230\u4e86\u73fe\u5728\u7684 PHP 7 \u4ecd\u7136\u5982\u6b64\uff0c\u6240\u6301\u7684\u7406\u7531\u5c31\u662f PHP \u53ea\u7ba1 <?php ?><\/code> \u88e1\u9762\u7684\u6771\u897f\uff0c\u6240\u4ee5\u5728\u90a3\u5916\u9762\u7684 BOM \u4e0d\u6b78\u6211\u7ba1\u30024<\/a><\/sup><\/p>\n\n\n\n

\u5403\u6389\u4e00\u534a\u7684\u5b57<\/h2>\n\n\n\n

\u4ee5\u4e0a\u8ac7\u7684\u662f\u7531\u65bc\u5b57\u78bc\u9801\u89e3\u91cb\u4e0d\u540c\u9020\u6210\u7684\u4e82\u78bc\u3002\u4f46\u5176\u5be6 DBCS \u7de8\u78bc\u9084\u6709\u53e6\u4e00\u7a2e\u4e82\u78bc\u7684\u6210\u56e0\uff1a\u5169\u500b\u4e00\u7d44\u7684\u4f4d\u5143\u7d44\u6709\u4e00\u500b\u56e0\u70ba\u5404\u7a2e\u539f\u56e0\u4e0d\u898b\u4e86\u3002\u4e0d\u898b\u7684\u539f\u56e0\u6709\u5f88\u591a\uff1a<\/p>\n\n\n\n