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PHP判断字符串编码是不是为utf8的函数

WBOY
WBOYOriginal
2016-06-13 10:38:28816browse

PHP判断字符串编码是否为utf8的函数
http://it.oyksoft.com/post/49/

// Returns true if $string is valid UTF-8 and false otherwise.function is_utf8($word){if (preg_match("/^([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){1}$/",$word) == true || preg_match("/([".chr(228)."-".chr(233)."]{1}[".chr(128)."-".chr(191)."]{1}[".chr(128)."-".chr(191)."]{1}){2,}/",$word) == true){return true;}else{return false;}} // function is_utf8

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