PHP string and Chinese character splitting method

If you directly use the PHP function "str_split" to split, garbled characters will appear because the length of Chinese characters and the length of English characters are different, but we can create a new function to first convert the characters into ascii values, and then judge the lengths of different characters To correctly split the Chinese string, store the result into an array, and finally use the php function "join" to insert percent signs between characters.

Method 1, the example code is as follows:

function str_split_utf8($ str){

$split=1;

$array=array();

for($i=0;$i

$value=ord($str[$i ]);

if($value>127){

if($value>=192&&$value<=223) $split=2;

elseif($value>=224 && $value<=239) $ split=3;

elseif($value>=240 && $value<=247) $split=4;

}else{

$split=1;

}

$key=null;

for ($j=0;$j<$split;$j++,$i++){

$key.=$str[$i];

}

array_push($array,$key);

}

return $array;

}

$string="php fan network www.phpfensi.com";

$arr1=str_split_utf8($string);

echo join("%",$arr1);

?>

Method 2, the example code is as follows:

$str="php fan network: http://www.phpfensi.com";

function mbstringtoarray($str,$charset) {

        $strlen=mb_strlen($str);

                                                                                                                                                                                                                                         1;

? >

Note:

1. The $charset variable is the web page encoding, such as "gb2312" or "utf-8";

2. Method 1 requires that the server must enable the mbstring.dll extension, otherwise the code execution error will occur, so For friends who use virtual hosts, you can consider using the following method.

Method 3, the example code is as follows:

function str_to_arr($str){

$l=strlen($str) ;

for($i=0;$i<$l;$i++){

$arr[]=ord($str[$i])>127?$str[$i].$str[ ++$i]:$str[$i];

}

return $arr;

}

$arr=str_to_arr($str);

?>