-
- preg_replace(”/([x80-xff])/”,””,$str);
- preg_replace(”/([u4e00-u9fa5])/”,””,$str);
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Example, PHP Chinese encoding judgment.
-
- //Determine whether there is Chinese in the content-gbk (php)
- function check_is_chinese($s){
- return preg_match('/[x80-xff]./', $s) ;
- }
- //Get the string length-gbk (php)
- function gb_strlen($str){
- $count = 0;
- for($i=0; $i$s = substr($str, $i, 1);
- if (preg_match("/[x80-xff]/", $s)) ++$i;
- ++$count;
- }
- return $ count;
- }
- //Intercept string string-gbk (php)
- function gb_substr($str, $len){
- $count = 0;
- for($i=0; $iif($count == $len) break;
- if(preg_match("/[x80-xff]/", substr($str, $i, 1))) ++$i;
- ++$count;
- }
- return substr($str, 0, $i);
- }
- //Statistical string length-utf8 (php)
- function utf8_strlen($str) {
- $count = 0;
- for ($i = 0; $i < strlen($str); $i++){
- $value = ord($str[$i]);
- if($value > 127) {
- $count++;
- if ($value >= 192 && $value <= 223) $i++;
- elseif($value >= 224 && $value <= 239) $i = $i + 2;
- elseif($value > = 240 && $value <= 247) $i = $i + 3;
- else die('not a utf-8 compatible string');
- }
- $count++;
- }
- return $count;
- }
- / /Intercept string-utf8(php)
- function utf8_substr($str,$position,$length){
- $start_position = strlen($str);
- $start_byte = 0;
- $end_position = strlen($str);
- $count = 0;
- for($i = 0; $i < strlen($str); $i++){
- if($count >= $position && $start_position > $i){
- $start_position = $i;
- $start_byte = $count;
- }
- if(($count-$start_byte)>=$length) {
- $end_position = $i;
- break;
- }
- $value = ord($str[ $i]);
- if($value > 127){
- $count++;
- if($value >= 192 && $value <= 223) $i++;
- elseif($value >= 224 && $ value <= 239) $i = $i + 2;
- elseif($value >= 240 && $value <= 247) $i = $i + 3;
- else die('not a utf-8 compatible string');
- }
- $count++;
- }
- return(substr($str,$start_position,$end_position-$start_position));
- }
- //Determine whether there is Korean-utf-8 (javascript)
- function checkkoreachar(str) {
- for(i=0; iif(((str.charcodeat(i) > 0x3130 && str.charcodeat(i) < 0x318f) || (str .charcodeat(i) >= 0xac00 && str.charcodeat(i) <= 0xd7a3))) {
- return true;
- }
- }
- return false;
- }
- //Determine whether there are Chinese characters-gbk (javascript )
- function check_chinese_char(s){
- return (s.length != s.replace(/[^x00-xff]/g,"**").length);
- }
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