php 如何判断字符是否是utf8编码 php怎样判断字符串是什么编码
php\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u4e0d\u662fbase64\u7f16\u7801\u3000\u3000\u53c2\u8003\u601d\u8def\uff1aPHP\u5224\u65ad\u4e00\u4e2a\u5b57\u7b26\u4e32\u662f\u5426\u7ecf\u8fc7base64\u7f16\u7801\uff0c\u53ef\u4ee5\u901a\u8fc7\u5bf9\u8be5\u5b57\u7b26\u4e32\u89e3\u7801\uff0c\u7136\u540e\u7f16\u7801\uff0c\u6700\u540e\u5bf9\u6bd4\u4e24\u8005\u662f\u5426\u76f8\u7b49\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a
php\u5224\u65ad\u5b57\u7b26\u7f16\u7801\u7684\u4e8c\u4e2a\u65b9\u6cd5\uff1a
\u4e00\u4e2a\u662f\u7528php\u81ea\u5e26\u7684\u51fd\u6570mb_detect_encoding\uff0c\u4e00\u4e2a\u662f\u4e2a\u4eba\u5199\u51fd\u6570\u6765\u5904\u7406\u3002
\u65b9\u6cd51\uff0c\u4f7f\u7528mb_detect_encoding\u51fd\u6570\u3002
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<?php
$str=\u201d\u811a\u672c\u201d;
echo mb_detect_encoding($str);
?>
\u65b9\u6cd52\uff0c\u81ea\u5b9a\u4e49\u51fd\u6570\u3002
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<?php
function chkbm($string){
$bm = array(\u2018ASCII\u2019, \u2018GBK\u2019, \u2018UTF-8\u2032);
foreach($bm as $c){
if( $string === iconv(\u2018UTF-8\u2032, $c, iconv($c, \u2018UTF-8\u2032, $string))){//\u8f6c\u6362\u7f16\u7801\u540e\u662f\u4e0d\u662f\u76f8\u7b49
return $c;
}
}
return null;
}
?>
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