{"id":619,"date":"2021-04-09T13:26:18","date_gmt":"2021-04-09T05:26:18","guid":{"rendered":"http:\/\/bj.iur.me\/?p=619"},"modified":"2022-11-07T00:03:47","modified_gmt":"2022-11-06T16:03:47","slug":"%e5%b8%b8%e7%94%a8%e6%ad%a3%e5%88%99%e8%a1%a8%e8%be%be%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.iur.me\/?p=619","title":{"rendered":"\u5e38\u7528\u6b63\u5219\u8868\u8fbe\u5f0f"},"content":{"rendered":"\n

\u7248\u672c\uff1av0.03 (2013-5-13) \u6574\u7406\uff1adeerchao<\/p>\n\n\n\n

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\u6b63\u5219\u8868\u8fbe\u5f0f\uff08\u82f1\u6587\uff1aRegular Expression\uff09\u5728\u8ba1\u7b97\u673a\u79d1\u5b66\u4e2d\uff0c\u662f\u6307\u4e00\u4e2a\u7528\u6765\u63cf\u8ff0\u6216\u8005\u5339\u914d\u4e00\u7cfb\u5217\u7b26\u5408\u67d0\u4e2a\u53e5\u6cd5\u89c4\u5219\u7684\u5b57\u7b26\u4e32\u7684\u5355\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n

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HTML \u6807\u7b7e<\/td>\/^<([a-z]+)([^<]+)*(?:>(.*)<\\\/\\1>|\\s+\\\/>)$\/<\/td><\/tr>
Unicode\u7f16\u7801\u4e2d\u7684\u6c49\u5b57\u8303\u56f4<\/td>\/^[u4e00-u9fa5],{0,}$\/<\/td><\/tr>
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\u6b63\u5219\u8868\u8fbe\u5f0f\u6709\u591a\u79cd\u4e0d\u540c\u7684\u98ce\u683c\u3002\u4e0b\u8868\u662f\u5728PCRE\u4e2d\u5143\u5b57\u7b26\u53ca\u5176\u5728\u6b63\u5219\u8868\u8fbe\u5f0f\u4e0a\u4e0b\u6587\u4e2d\u7684\u884c\u4e3a\u7684\u4e00\u4e2a\u5b8c\u6574\u5217\u8868\uff1a<\/p>\n\n\n\n

\u5b57\u7b26<\/th>\u63cf\u8ff0<\/th><\/tr>
\\<\/th>\u5c06\u4e0b\u4e00\u4e2a\u5b57\u7b26\u6807\u8bb0\u4e3a\u4e00\u4e2a\u7279\u6b8a\u5b57\u7b26\u3001\u6216\u4e00\u4e2a\u539f\u4e49\u5b57\u7b26\u3001\u6216\u4e00\u4e2a\u5411\u540e\u5f15\u7528\u3001\u6216\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u7b26\u3002\u4f8b\u5982\uff0c\u201cn\u201d\u5339\u914d\u5b57\u7b26\u201cn\u201d\u3002\u201c\\n\u201d\u5339\u914d\u4e00\u4e2a\u6362\u884c\u7b26\u3002\u5e8f\u5217\u201c\\\\\u201d\u5339\u914d\u201c\\\u201d\u800c\u201c\\(\u201d\u5219\u5339\u914d\u201c(\u201d\u3002<\/td><\/tr>
^<\/th>\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86RegExp\u5bf9\u8c61\u7684Multiline\u5c5e\u6027\uff0c^\u4e5f\u5339\u914d\u201c\\n\u201d\u6216\u201c\\r\u201d\u4e4b\u540e\u7684\u4f4d\u7f6e\u3002<\/td><\/tr>
$<\/th>\u5339\u914d\u8f93\u5165\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\u4f4d\u7f6e\u3002\u5982\u679c\u8bbe\u7f6e\u4e86RegExp\u5bf9\u8c61\u7684Multiline\u5c5e\u6027\uff0c$\u4e5f\u5339\u914d\u201c\\n\u201d\u6216\u201c\\r\u201d\u4e4b\u524d\u7684\u4f4d\u7f6e\u3002<\/td><\/tr>
*<\/th>\u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u591a\u6b21\u3002\u4f8b\u5982\uff0czo*\u80fd\u5339\u914d\u201cz\u201d\u4ee5\u53ca\u201czoo\u201d\u3002*\u7b49\u4ef7\u4e8e{0,}\u3002<\/td><\/tr>
+<\/th>\u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u4e00\u6b21\u6216\u591a\u6b21\u3002\u4f8b\u5982\uff0c\u201czo+\u201d\u80fd\u5339\u914d\u201czo\u201d\u4ee5\u53ca\u201czoo\u201d\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\u201cz\u201d\u3002+\u7b49\u4ef7\u4e8e{1,}\u3002<\/td><\/tr>
?<\/th>\u5339\u914d\u524d\u9762\u7684\u5b50\u8868\u8fbe\u5f0f\u96f6\u6b21\u6216\u4e00\u6b21\u3002\u4f8b\u5982\uff0c\u201cdo(es)?\u201d\u53ef\u4ee5\u5339\u914d\u201cdo\u201d\u6216\u201cdoes\u201d\u4e2d\u7684\u201cdo\u201d\u3002?\u7b49\u4ef7\u4e8e{0,1}\u3002<\/td><\/tr>
{n}<\/th>n\u662f\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u5339\u914d\u786e\u5b9a\u7684n\u6b21\u3002\u4f8b\u5982\uff0c\u201co{2}\u201d\u4e0d\u80fd\u5339\u914d\u201cBob\u201d\u4e2d\u7684\u201co\u201d\uff0c\u4f46\u662f\u80fd\u5339\u914d\u201cfood\u201d\u4e2d\u7684\u4e24\u4e2ao\u3002<\/td><\/tr>
{n,}<\/th>n\u662f\u4e00\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u81f3\u5c11\u5339\u914dn\u6b21\u3002\u4f8b\u5982\uff0c\u201co{2,}\u201d\u4e0d\u80fd\u5339\u914d\u201cBob\u201d\u4e2d\u7684\u201co\u201d\uff0c\u4f46\u80fd\u5339\u914d\u201cfoooood\u201d\u4e2d\u7684\u6240\u6709o\u3002\u201co{1,}\u201d\u7b49\u4ef7\u4e8e\u201co+\u201d\u3002\u201co{0,}\u201d\u5219\u7b49\u4ef7\u4e8e\u201co*\u201d\u3002<\/td><\/tr>
{n,m}<\/th>m\u548cn\u5747\u4e3a\u975e\u8d1f\u6574\u6570\uff0c\u5176\u4e2dn<=m\u3002\u6700\u5c11\u5339\u914dn\u6b21\u4e14\u6700\u591a\u5339\u914dm\u6b21\u3002\u4f8b\u5982\uff0c\u201co{1,3}\u201d\u5c06\u5339\u914d\u201cfooooood\u201d\u4e2d\u7684\u524d\u4e09\u4e2ao\u3002\u201co{0,1}\u201d\u7b49\u4ef7\u4e8e\u201co?\u201d\u3002\u8bf7\u6ce8\u610f\u5728\u9017\u53f7\u548c\u4e24\u4e2a\u6570\u4e4b\u95f4\u4e0d\u80fd\u6709\u7a7a\u683c\u3002<\/td><\/tr>
?<\/th>\u5f53\u8be5\u5b57\u7b26\u7d27\u8ddf\u5728\u4efb\u4f55\u4e00\u4e2a\u5176\u4ed6\u9650\u5236\u7b26\uff08*,+,?\uff0c{n}\uff0c{n,}\uff0c{n,m}\uff09\u540e\u9762\u65f6\uff0c\u5339\u914d\u6a21\u5f0f\u662f\u975e\u8d2a\u5a6a\u7684\u3002\u975e\u8d2a\u5a6a\u6a21\u5f0f\u5c3d\u53ef\u80fd\u5c11\u7684\u5339\u914d\u6240\u641c\u7d22\u7684\u5b57\u7b26\u4e32\uff0c\u800c\u9ed8\u8ba4\u7684\u8d2a\u5a6a\u6a21\u5f0f\u5219\u5c3d\u53ef\u80fd\u591a\u7684\u5339\u914d\u6240\u641c\u7d22\u7684\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5b57\u7b26\u4e32\u201coooo\u201d\uff0c\u201co+?\u201d\u5c06\u5339\u914d\u5355\u4e2a\u201co\u201d\uff0c\u800c\u201co+\u201d\u5c06\u5339\u914d\u6240\u6709\u201co\u201d\u3002<\/td><\/tr>
.<\/th>\u5339\u914d\u9664\u201c\\n\u201d\u4e4b\u5916\u7684\u4efb\u4f55\u5355\u4e2a\u5b57\u7b26\u3002\u8981\u5339\u914d\u5305\u62ec\u201c\\n\u201d\u5728\u5185\u7684\u4efb\u4f55\u5b57\u7b26\uff0c\u8bf7\u4f7f\u7528\u50cf\u201c[.\\n]\u201d\u7684\u6a21\u5f0f\u3002<\/td><\/tr>
(pattern)<\/th>\u5339\u914dpattern\u5e76\u83b7\u53d6\u8fd9\u4e00\u5339\u914d\u3002\u6240\u83b7\u53d6\u7684\u5339\u914d\u53ef\u4ee5\u4ece\u4ea7\u751f\u7684Matches\u96c6\u5408\u5f97\u5230\uff0c\u5728VBScript\u4e2d\u4f7f\u7528SubMatches\u96c6\u5408\uff0c\u5728JScript\u4e2d\u5219\u4f7f\u7528$0\u2026$9\u5c5e\u6027\u3002\u8981\u5339\u914d\u5706\u62ec\u53f7\u5b57\u7b26\uff0c\u8bf7\u4f7f\u7528\u201c\\(\u201d\u6216\u201c\\)\u201d\u3002<\/td><\/tr>
(?:pattern)<\/th>\u5339\u914dpattern\u4f46\u4e0d\u83b7\u53d6\u5339\u914d\u7ed3\u679c\uff0c\u4e5f\u5c31\u662f\u8bf4\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e0d\u8fdb\u884c\u5b58\u50a8\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u8fd9\u5728\u4f7f\u7528\u6216\u5b57\u7b26\u201c(|)\u201d\u6765\u7ec4\u5408\u4e00\u4e2a\u6a21\u5f0f\u7684\u5404\u4e2a\u90e8\u5206\u662f\u5f88\u6709\u7528\u3002\u4f8b\u5982\u201cindustr(?:y|ies)\u201d\u5c31\u662f\u4e00\u4e2a\u6bd4\u201cindustry|industries\u201d\u66f4\u7b80\u7565\u7684\u8868\u8fbe\u5f0f\u3002<\/td><\/tr>
(?=pattern)<\/th>\u6b63\u5411\u9884\u67e5\uff0c\u5728\u4efb\u4f55\u5339\u914dpattern\u7684\u5b57\u7b26\u4e32\u5f00\u59cb\u5904\u5339\u914d\u67e5\u627e\u5b57\u7b26\u4e32\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8be5\u5339\u914d\u4e0d\u9700\u8981\u83b7\u53d6\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u201cWindows(?=95|98|NT|2000)\u201d\u80fd\u5339\u914d\u201cWindows2000\u201d\u4e2d\u7684\u201cWindows\u201d\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\u201cWindows3.1\u201d\u4e2d\u7684\u201cWindows\u201d\u3002\u9884\u67e5\u4e0d\u6d88\u8017\u5b57\u7b26\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u4e00\u4e2a\u5339\u914d\u53d1\u751f\u540e\uff0c\u5728\u6700\u540e\u4e00\u6b21\u5339\u914d\u4e4b\u540e\u7acb\u5373\u5f00\u59cb\u4e0b\u4e00\u6b21\u5339\u914d\u7684\u641c\u7d22\uff0c\u800c\u4e0d\u662f\u4ece\u5305\u542b\u9884\u67e5\u7684\u5b57\u7b26\u4e4b\u540e\u5f00\u59cb\u3002<\/td><\/tr>
(?!pattern)<\/th>\u8d1f\u5411\u9884\u67e5\uff0c\u5728\u4efb\u4f55\u4e0d\u5339\u914dpattern\u7684\u5b57\u7b26\u4e32\u5f00\u59cb\u5904\u5339\u914d\u67e5\u627e\u5b57\u7b26\u4e32\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u83b7\u53d6\u5339\u914d\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8be5\u5339\u914d\u4e0d\u9700\u8981\u83b7\u53d6\u4f9b\u4ee5\u540e\u4f7f\u7528\u3002\u4f8b\u5982\u201cWindows(?!95|98|NT|2000)\u201d\u80fd\u5339\u914d\u201cWindows3.1\u201d\u4e2d\u7684\u201cWindows\u201d\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\u201cWindows2000\u201d\u4e2d\u7684\u201cWindows\u201d\u3002\u9884\u67e5\u4e0d\u6d88\u8017\u5b57\u7b26\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u4e00\u4e2a\u5339\u914d\u53d1\u751f\u540e\uff0c\u5728\u6700\u540e\u4e00\u6b21\u5339\u914d\u4e4b\u540e\u7acb\u5373\u5f00\u59cb\u4e0b\u4e00\u6b21\u5339\u914d\u7684\u641c\u7d22\uff0c\u800c\u4e0d\u662f\u4ece\u5305\u542b\u9884\u67e5\u7684\u5b57\u7b26\u4e4b\u540e\u5f00\u59cb<\/td><\/tr>
x|y<\/th>\u5339\u914dx\u6216y\u3002\u4f8b\u5982\uff0c\u201cz|food\u201d\u80fd\u5339\u914d\u201cz\u201d\u6216\u201cfood\u201d\u3002\u201c(z|f)ood\u201d\u5219\u5339\u914d\u201czood\u201d\u6216\u201cfood\u201d\u3002<\/td><\/tr>
[xyz]<\/th>\u5b57\u7b26\u96c6\u5408\u3002\u5339\u914d\u6240\u5305\u542b\u7684\u4efb\u610f\u4e00\u4e2a\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u201c[abc]\u201d\u53ef\u4ee5\u5339\u914d\u201cplain\u201d\u4e2d\u7684\u201ca\u201d\u3002<\/td><\/tr>
[^xyz]<\/th>\u8d1f\u503c\u5b57\u7b26\u96c6\u5408\u3002\u5339\u914d\u672a\u5305\u542b\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u201c[^abc]\u201d\u53ef\u4ee5\u5339\u914d\u201cplain\u201d\u4e2d\u7684\u201cp\u201d\u3002<\/td><\/tr>
[a-z]<\/th>\u5b57\u7b26\u8303\u56f4\u3002\u5339\u914d\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u201c[a-z]\u201d\u53ef\u4ee5\u5339\u914d\u201ca\u201d\u5230\u201cz\u201d\u8303\u56f4\u5185\u7684\u4efb\u610f\u5c0f\u5199\u5b57\u6bcd\u5b57\u7b26\u3002<\/td><\/tr>
[^a-z]<\/th>\u8d1f\u503c\u5b57\u7b26\u8303\u56f4\u3002\u5339\u914d\u4efb\u4f55\u4e0d\u5728\u6307\u5b9a\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\u201c[^a-z]\u201d\u53ef\u4ee5\u5339\u914d\u4efb\u4f55\u4e0d\u5728\u201ca\u201d\u5230\u201cz\u201d\u8303\u56f4\u5185\u7684\u4efb\u610f\u5b57\u7b26\u3002<\/td><\/tr>
\\b<\/th>\u5339\u914d\u4e00\u4e2a\u5355\u8bcd\u8fb9\u754c\uff0c\u4e5f\u5c31\u662f\u6307\u5355\u8bcd\u548c\u7a7a\u683c\u95f4\u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u201cer\\b\u201d\u53ef\u4ee5\u5339\u914d\u201cnever\u201d\u4e2d\u7684\u201cer\u201d\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\u201cverb\u201d\u4e2d\u7684\u201cer\u201d\u3002<\/td><\/tr>
\\B<\/th>\u5339\u914d\u975e\u5355\u8bcd\u8fb9\u754c\u3002\u201cer\\B\u201d\u80fd\u5339\u914d\u201cverb\u201d\u4e2d\u7684\u201cer\u201d\uff0c\u4f46\u4e0d\u80fd\u5339\u914d\u201cnever\u201d\u4e2d\u7684\u201cer\u201d\u3002<\/td><\/tr>
\\cx<\/th>\u5339\u914d\u7531x\u6307\u660e\u7684\u63a7\u5236\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\\cM\u5339\u914d\u4e00\u4e2aControl-M\u6216\u56de\u8f66\u7b26\u3002x\u7684\u503c\u5fc5\u987b\u4e3aA-Z\u6216a-z\u4e4b\u4e00\u3002\u5426\u5219\uff0c\u5c06c\u89c6\u4e3a\u4e00\u4e2a\u539f\u4e49\u7684\u201cc\u201d\u5b57\u7b26\u3002<\/td><\/tr>
\\d<\/th>\u5339\u914d\u4e00\u4e2a\u6570\u5b57\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e[0-9]\u3002<\/td><\/tr>
\\D<\/th>\u5339\u914d\u4e00\u4e2a\u975e\u6570\u5b57\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e[^0-9]\u3002<\/td><\/tr>
\\f<\/th>\u5339\u914d\u4e00\u4e2a\u6362\u9875\u7b26\u3002\u7b49\u4ef7\u4e8e\\x0c\u548c\\cL\u3002<\/td><\/tr>
\\n<\/th>\u5339\u914d\u4e00\u4e2a\u6362\u884c\u7b26\u3002\u7b49\u4ef7\u4e8e\\x0a\u548c\\cJ\u3002<\/td><\/tr>
\\r<\/th>\u5339\u914d\u4e00\u4e2a\u56de\u8f66\u7b26\u3002\u7b49\u4ef7\u4e8e\\x0d\u548c\\cM\u3002<\/td><\/tr>
\\s<\/th>\u5339\u914d\u4efb\u4f55\u7a7a\u767d\u5b57\u7b26\uff0c\u5305\u62ec\u7a7a\u683c\u3001\u5236\u8868\u7b26\u3001\u6362\u9875\u7b26\u7b49\u7b49\u3002\u7b49\u4ef7\u4e8e[\\f\\n\\r\\t\\v]\u3002<\/td><\/tr>
\\S<\/th>\u5339\u914d\u4efb\u4f55\u975e\u7a7a\u767d\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e[^\\f\\n\\r\\t\\v]\u3002<\/td><\/tr>
\\t<\/th>\u5339\u914d\u4e00\u4e2a\u5236\u8868\u7b26\u3002\u7b49\u4ef7\u4e8e\\x09\u548c\\cI\u3002<\/td><\/tr>
\\v<\/th>\u5339\u914d\u4e00\u4e2a\u5782\u76f4\u5236\u8868\u7b26\u3002\u7b49\u4ef7\u4e8e\\x0b\u548c\\cK\u3002<\/td><\/tr>
\\w<\/th>\u5339\u914d\u5305\u62ec\u4e0b\u5212\u7ebf\u7684\u4efb\u4f55\u5355\u8bcd\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e\u201c[A-Za-z0-9_]\u201d\u3002<\/td><\/tr>
\\W<\/th>\u5339\u914d\u4efb\u4f55\u975e\u5355\u8bcd\u5b57\u7b26\u3002\u7b49\u4ef7\u4e8e\u201c[^A-Za-z0-9_]\u201d\u3002<\/td><\/tr>
\\xn<\/th>\u5339\u914dn\uff0c\u5176\u4e2dn\u4e3a\u5341\u516d\u8fdb\u5236\u8f6c\u4e49\u503c\u3002\u5341\u516d\u8fdb\u5236\u8f6c\u4e49\u503c\u5fc5\u987b\u4e3a\u786e\u5b9a\u7684\u4e24\u4e2a\u6570\u5b57\u957f\u3002\u4f8b\u5982\uff0c\u201c\\x41\u201d\u5339\u914d\u201cA\u201d\u3002\u201c\\x041\u201d\u5219\u7b49\u4ef7\u4e8e\u201c\\x04&1\u201d\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u53ef\u4ee5\u4f7f\u7528ASCII\u7f16\u7801\u3002.<\/td><\/tr>
\\num<\/th>\u5339\u914dnum\uff0c\u5176\u4e2dnum\u662f\u4e00\u4e2a\u6b63\u6574\u6570\u3002\u5bf9\u6240\u83b7\u53d6\u7684\u5339\u914d\u7684\u5f15\u7528\u3002\u4f8b\u5982\uff0c\u201c(.)\\1\u201d\u5339\u914d\u4e24\u4e2a\u8fde\u7eed\u7684\u76f8\u540c\u5b57\u7b26\u3002<\/td><\/tr>
\\n<\/th>\u6807\u8bc6\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u6216\u4e00\u4e2a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c\\n\u4e4b\u524d\u81f3\u5c11n\u4e2a\u83b7\u53d6\u7684\u5b50\u8868\u8fbe\u5f0f\uff0c\u5219n\u4e3a\u5411\u540e\u5f15\u7528\u3002\u5426\u5219\uff0c\u5982\u679cn\u4e3a\u516b\u8fdb\u5236\u6570\u5b57\uff080-7\uff09\uff0c\u5219n\u4e3a\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u3002<\/td><\/tr>
\\nm<\/th>\u6807\u8bc6\u4e00\u4e2a\u516b\u8fdb\u5236\u8f6c\u4e49\u503c\u6216\u4e00\u4e2a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c\\nm\u4e4b\u524d\u81f3\u5c11\u6709nm\u4e2a\u83b7\u5f97\u5b50\u8868\u8fbe\u5f0f\uff0c\u5219nm\u4e3a\u5411\u540e\u5f15\u7528\u3002\u5982\u679c\\nm\u4e4b\u524d\u81f3\u5c11\u6709n\u4e2a\u83b7\u53d6\uff0c\u5219n\u4e3a\u4e00\u4e2a\u540e\u8ddf\u6587\u5b57m\u7684\u5411\u540e\u5f15\u7528\u3002\u5982\u679c\u524d\u9762\u7684\u6761\u4ef6\u90fd\u4e0d\u6ee1\u8db3\uff0c\u82e5n\u548cm\u5747\u4e3a\u516b\u8fdb\u5236\u6570\u5b57\uff080-7\uff09\uff0c\u5219\\nm\u5c06\u5339\u914d\u516b\u8fdb\u5236\u8f6c\u4e49\u503cnm\u3002<\/td><\/tr>
\\nml<\/th>\u5982\u679cn\u4e3a\u516b\u8fdb\u5236\u6570\u5b57\uff080-3\uff09\uff0c\u4e14m\u548cl\u5747\u4e3a\u516b\u8fdb\u5236\u6570\u5b57\uff080-7\uff09\uff0c\u5219\u5339\u914d\u516b\u8fdb\u5236\u8f6c\u4e49\u503cnml\u3002<\/td><\/tr>
\\un<\/th>\u5339\u914dn\uff0c\u5176\u4e2dn\u662f\u4e00\u4e2a\u7528\u56db\u4e2a\u5341\u516d\u8fdb\u5236\u6570\u5b57\u8868\u793a\u7684Unicode\u5b57\u7b26\u3002\u4f8b\u5982\uff0c\\u00A9\u5339\u914d\u7248\u6743\u7b26\u53f7\uff08?\uff09\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u4ee5\u4e0b\u662f\u4ee5PHP\u7684\u8bed\u6cd5\u6240\u5199\u7684\u793a\u4f8b<\/p>\n\n\n\n

\u9a8c\u8bc1\u5b57\u7b26\u4e32\u662f\u5426\u53ea\u542b\u6570\u5b57\u4e0e\u82f1\u6587\uff0c\u5b57\u7b26\u4e32\u957f\u5ea6\u5e76\u57284~16\u4e2a\u5b57\u7b26\u4e4b\u95f4

<?php
$str = ‘a1234’;
if (preg_match(“^[a-zA-Z0-9]{4,16}$”, $str)) {
echo “\u9a8c\u8bc1\u6210\u529f”;
} else {
echo “\u9a8c\u8bc1\u5931\u6557”;
}
?>

\u7b80\u6613\u7684\u53f0\u6e7e\u8eab\u4efd\u8bc1\u5b57\u53f7\u9a8c\u8bc1<\/p>\n\n\n\n

<?php
$str = ‘a1234’;
if (preg_match(“\/^\\w[12]\\d{8}$\/”, $str)) {
echo “\u9a8c\u8bc1\u6210\u529f”;
} else {
echo “\u9a8c\u8bc1\u5931\u6557”;
}
?>

\u4ee5\u4e0b\u793a\u4f8b\u662f\u7528 Perl \u8bed\u8a00\u5199\u7684\uff0c\u4e0e\u4e0a\u9762\u7684\u793a\u4f8b\u529f\u80fd\u76f8\u540c
print $str = “a1234” =~ m:^[a-zA-Z0-9]{4,16}$: ? “COMFIRM” : “FAILED”;
print $str = “a1234″ =~ m”^\\w[12]\\d{8}$” ? “COMFIRM” : “INVAILD”;<\/p>\n\n\n\n

Validated XHTML 1.0 Strict<\/a> Validated CSS 2.1<\/a><\/p>\n\n\n\n

\u5982\u4f55\u5199\u51fa\u9ad8\u6548\u7387\u7684\u6b63\u5219\u8868\u8fbe\u5f0f<\/h4>\n\n\n\n

\u5982\u679c\u7eaf\u7cb9\u662f\u4e3a\u4e86\u6311\u6218\u81ea\u5df1\u7684\u6b63\u5219\u6c34\u5e73\uff0c\u7528\u6765\u5b9e\u73b0\u4e00\u4e9b\u7279\u6548\uff08\u4f8b\u5982\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u8ba1\u7b97\u8d28\u6570\u3001\u89e3\u7ebf\u6027\u65b9\u7a0b\uff09\uff0c\u6548\u7387\u4e0d\u662f\u95ee\u9898\uff1b\u5982\u679c\u6240\u5199\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u53ea\u662f\u4e3a\u4e86\u6ee1\u8db3\u4e00\u4e24\u6b21\u3001\u51e0\u5341\u6b21\u7684\u8fd0\u884c\uff0c\u4f18\u5316\u4e0e\u5426\u533a\u522b\u4e5f\u4e0d\u592a\u5927\u3002\u4f46\u662f\uff0c\u5982\u679c\u6240\u5199\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4f1a\u767e\u4e07\u6b21\u3001\u5343\u4e07\u6b21\u5730\u8fd0\u884c\uff0c\u6548\u7387\u5c31\u662f\u5f88\u5927\u7684\u95ee\u9898\u4e86\u3002\u6211\u8fd9\u91cc\u603b\u7ed3\u4e86\u51e0\u6761\u63d0\u5347\u6b63\u5219\u8868\u8fbe\u5f0f\u8fd0\u884c\u6548\u7387\u7684\u7ecf\u9a8c\uff08\u5de5\u4f5c\u4e2d\u5b66\u5230\u7684\uff0c\u770b\u4e66\u5b66\u6765\u7684\uff0c\u81ea\u5df1\u7684\u4f53\u4f1a\uff09\uff0c\u8d34\u5728\u8fd9\u91cc\u3002\u5982\u679c\u60a8\u6709\u5176\u5b83\u7684\u7ecf\u9a8c\u800c\u8fd9\u91cc\u6ca1\u6709\u63d0\u53ca\uff0c\u6b22\u8fce\u8d50\u6559\u3002<\/p>\n\n\n\n

\u4e3a\u884c\u6587\u65b9\u4fbf\uff0c\u5148\u5b9a\u4e49\u4e24\u4e2a\u6982\u5ff5\u3002<\/p>\n\n\n\n

\u8bef\u5339\u914d<\/strong>\uff1a\u6307\u6b63\u5219\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u7684\u5185\u5bb9\u8303\u56f4\u8d85\u51fa\u4e86\u6240\u9700\u8981\u8303\u56f4\uff0c\u6709\u4e9b\u6587\u672c\u660e\u660e\u4e0d\u7b26\u5408\u8981\u6c42\uff0c\u4f46\u662f\u88ab\u6240\u5199\u7684\u6b63\u5219\u5f0f\u201c\u51fb\u4e2d\u4e86\u201d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f7f\u7528\\d{11}\u6765\u5339\u914d11\u4f4d\u7684\u624b\u673a\u53f7\uff0c\\d{11}\u4e0d\u5355\u80fd\u5339\u914d\u6b63\u786e\u7684\u624b\u673a\u53f7\uff0c\u5b83\u8fd8\u4f1a\u5339\u914d98765432100\u8fd9\u6837\u7684\u660e\u663e\u4e0d\u662f\u624b\u673a\u53f7\u7684\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u628a\u8fd9\u6837\u7684\u5339\u914d\u79f0\u4e4b\u4e3a\u8bef\u5339\u914d\u3002<\/p>\n\n\n\n

\u6f0f\u5339\u914d<\/strong>\uff1a\u6307\u6b63\u5219\u8868\u8fbe\u5f0f\u6240\u5339\u914d\u7684\u5185\u5bb9\u6240\u89c4\u5b9a\u7684\u8303\u56f4\u592a\u72ed\u7a84\uff0c\u6709\u4e9b\u6587\u672c\u786e\u5b9e\u662f\u6240\u9700\u8981\u7684\uff0c\u4f46\u662f\u6240\u5199\u7684\u6b63\u5219\u6ca1\u6709\u5c06\u8fd9\u79cd\u60c5\u51b5\u56ca\u62ec\u5728\u5185\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\\d{18}\u6765\u5339\u914d18\u4f4d\u7684\u8eab\u4efd\u8bc1\u53f7\u7801\uff0c\u5c31\u4f1a\u6f0f\u6389\u7ed3\u5c3e\u662f\u5b57\u6bcdX\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

\u5199\u51fa\u4e00\u6761\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u65e2\u53ef\u80fd\u53ea\u51fa\u73b0<\/strong>\u8bef\u5339\u914d\uff08\u6761\u4ef6\u5199\u5f97\u6781\u5bbd\u677e\uff0c\u5176\u8303\u56f4\u5927\u4e8e\u76ee\u6807\u6587\u672c\uff09\uff0c\u4e5f\u53ef\u80fd\u53ea\u51fa\u73b0<\/strong>\u6f0f\u5339\u914d\uff08\u53ea\u63cf\u8ff0\u4e86\u76ee\u6807\u6587\u672c\u4e2d\u591a\u79cd\u60c5\u51b5\u79cd\u7684\u4e00\u79cd\uff09\uff0c\u8fd8\u53ef\u80fd\u65e2\u6709\u8bef\u5339\u914d\u53c8\u6709\u6f0f\u5339\u914d<\/strong>\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\\w+\\.com\u6765\u5339\u914d.com\u7ed3\u5c3e\u7684\u57df\u540d\uff0c\u65e2\u4f1a\u8bef\u5339\u914dabc_.com\u8fd9\u6837\u7684\u5b57\u4e32\uff08\u5408\u6cd5\u7684\u57df\u540d\u4e2d\u4e0d\u542b\u4e0b\u5212\u7ebf\uff0c\\w\u5305\u542b\u4e86\u4e0b\u5212\u7ebf\u8fd9\u79cd\u60c5\u51b5\uff09\uff0c\u53c8\u4f1a\u6f0f\u6389ab-c.com\u8fd9\u6837\u7684\u57df\u540d\uff08\u5408\u6cd5\u57df\u540d\u4e2d\u53ef\u4ee5\u542b\u4e2d\u5212\u7ebf\uff0c\u4f46\u662f\\w\u4e0d\u5339\u914d\u4e2d\u5212\u7ebf\uff09\u3002<\/p>\n\n\n\n

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