js escape escape Chinese php conversion function_PHP tutorial

Many times it is necessary to use the escape function of js to convert Chinese characters, but how can the characters converted by js be converted back using php? Below I found two very practical functions.

GB2312 encoding:

preg_match_all("/%u.{4}|.{4};|d+;|.+/U",$str,$r); $ar = $r[0];

The code is as follows

代码如下

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function unescape($str) { $str = rawurldecode($str); preg_match_all("/%u.{4}|&#x.{4};|&#d+;|.+/U",$str,$r); $ar = $r[0]; foreach($ar as $k=>$v) { if(substr($v,0,2) == "%u") $ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,-4))); elseif(substr($v,0,3) == "&#x") $ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,3,-1))); elseif(substr($v,0,2) == "&#") { $ar[$k] = iconv("UCS-2","GBK",pack("n",substr($v,2,-1))); } } return join("",$ar); }

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function unescape($str) {

代码如下

复制代码

function unescape($str){ $ret = ''; $len = strlen($str); for ($i = 0; $i < $len; $i++){ if ($str[$i] == '%' && $str[$i+1] == 'u'){ $val = hexdec(substr($str, $i+2, 4)); if ($val < 0x7f) $ret .= chr($val); else if($val < 0x800) $ret .= chr(0xc0|($val>>6)).chr(0x80|($val&0x3f)); else $ret .= chr(0xe0|($val>>12)).chr(0x80|(($val>>6)&0x3f)).chr(0x80|($val&0x3f)); $i += 5; } else if ($str[$i] == '%'){ $ret .= urldecode(substr($str, $i, 3)); $i += 2; } else $ret .= $str[$i]; } return $ret; }

$str = rawurldecode($str);

foreach($ar as $k=>$v) { if(substr($v,0,2) == "%u")

$ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,-4)));

elseif(substr($v,0,3) == "") $ar[$k] = iconv("UCS-2","GBK",pack("H4",substr($v,3,-1))); elseif(substr($v,0,2) == "") { $ar[$k] = iconv("UCS-2","GBK",pack("n",substr($v,2,-1))); } } return join("",$ar); }

UTF8 encoding:

The code is as follows

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function unescape($str){ $ret = ''; $len = strlen($str); for ($i = 0; $i < $len; $i++){ <🎜> if ($str[$i] == '%' && $str[$i+1] == 'u'){ <🎜> $val = hexdec(substr($str, $i+2, 4)); <🎜> if ($val < 0x7f) $ret .= chr($val); <🎜> else if($val < 0x800) $ret .= chr(0xc0|($val>>6)).chr(0x80|($val&0x3f)); else $ret .= chr(0xe0|($val>>12)).chr(0x80|(($val>>6)&0x3f)).chr(0x80|($val&0x3f)); $i += 5; } else if ($str[$i] == '%'){ $ret .= urldecode(substr($str, $i, 3)); $i += 2; } else $ret .= $str[$i]; } return $ret; } http://www.bkjia.com/PHPjc/631689.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631689.htmlTechArticleMany times it is necessary to use the escape function of js to convert Chinese characters, but how to use php after converting characters with js To convert it back, I found two very practical functions below. GB231...