這裏有兩個功能,幫助用戶實現了接近你想要什麼:
//reject overly long 2 byte sequences, as well as characters above U+10000 and replace with ?
$some_string = preg_replace('/[\x00-\x08\x10\x0B\x0C\x0E-\x19\x7F]'.
'|[\x00-\x7F][\x80-\xBF]+'.
'|([\xC0\xC1]|[\xF0-\xFF])[\x80-\xBF]*'.
'|[\xC2-\xDF]((?![\x80-\xBF])|[\x80-\xBF]{2,})'.
'|[\xE0-\xEF](([\x80-\xBF](?![\x80-\xBF]))|(?![\x80-\xBF]{2})|[\x80-\xBF]{3,})/S',
'?', $some_string);
//reject overly long 3 byte sequences and UTF-16 surrogates and replace with ?
$some_string = preg_replace('/\xE0[\x80-\x9F][\x80-\xBF]'.
'|\xED[\xA0-\xBF][\x80-\xBF]/S','?', $some_string);
請注意,您可以通過改變位於preg_replace('blablabla', **'?'**, $some_string)
串更換替換(目前是與別的「?」
原來的文章:http://magp.ie/2011/01/06/remove-non-utf8-characters-from-string-with-php/
聽起來不錯,我會測試它。 –