String interception function (supports mixed Chinese and English)_PHP tutorial

String interception function (supports mixed Chinese and English) In the past, we would use the function that comes with PHP to intercept strings. Today I will take a look at a PHP code example of a string interception function (supports mixed Chinese and English). ​

String interception function (supports mixed Chinese and English)
In the past, we used the function that comes with the PHP tutorial to intercept strings. Today I will take a look at a PHP code example of a string interception function (supporting a mix of Chinese and English).
*/

function cutstr($string, $sublen=10, $start = 0, $code = 'utf-8')
{
if($code == 'utf-8')
{
$pa = "/[x01-x7f]|[xc2-xdf][x80-xbf]|xe0[xa0-xbf][x80-xbf]|[xe1-xef][x80-xbf][x80-xbf]| xf0[x90-xbf][x80-xbf][x80-xbf]|[xf1-xf7][x80-xbf][x80-xbf][x80-xbf]/";
preg_match_all($pa, $string, $t_string);

//if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen))."..." ;
return join('', array_slice($t_string[0], $start, $sublen));
}
else
{
$start = $start*2;
$sublen = $sublen*2;
$strlen = strlen($string);
$tmps tutorial tr = '';
for($i=0; $i<$strlen; $i++)
{
if($i>=$start && $i<($start+$sublen))
{
if(ord(substr($string, $i, 1))>129) $tmpstr.= substr($string, $i, 2);
else $tmpstr.= substr($string, $i, 1);
}
if(ord(substr($string, $i, 1))>129) $i++;
}
//if(strlen($tmpstr)<$strlen ) $tmpstr.= "...";
return $tmpstr;
}
}