截取字符串长度（不区分中英文字符长度）

php教程|PHP源码

截取字符串长度（不区分中英文字符长度）

php教程-PHP源码

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static function tran($string,$length=0,$str=\,$etc=...){$result = \;$string = html_entity_decode(trim(strip_tags($string)), ENT_QUOTES, utf-8);for($i = 0, $j = 0; $i = $length){for($x = 0, $y = 0; $x < strlen($etc); $x++){if($number = strpos(str_pad(decbin(ord(substr($string, $i, 1))), 8, , STR_PAD_LEFT), )){$x += $number - 1;$y++;}else{$y += 0.5;}}$length -= $y;break;}if($number = strpos(str_pad(decbin(ord(substr($string, $i, 1))), 8, , STR_PAD_LEFT), )){$i += $number - 1;$j++;}else{$j += 0.5;}}for($i = 0; (($i 0)); $i++){if($number = strpos(str_pad(decbin(ord(substr($string, $i, 1))), 8, , STR_PAD_LEFT), )){if($length < 1.0){break;}$result .= substr($string, $i, $number);$length -= 1.0;$i += $number - 1;}else{$result .= substr($string, $i, 1);$length -= 0.5;}}$result = htmlentities($result, ENT_QUOTES, utf-8);if($i < strlen($string)){$result .= $etc;}if(!empty($str)){return $result;}else{echo $result;}}}

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