Example of php custom function to intercept the length of Chinese characters

function msubstr($str,$start,$len) {
$strlen=$start+$len;
for($i=0;$i<$strlen;$i++) {
if(ord( substr($str,$i,1))>0xa0) {
$tmpstr.=substr($str,$i,2);
$i++;
} else
$tmpstr.=substr($str,$ i,1);
}
return $tmpstr;
}

Call:

$str="This character is so long,^_^";
$Short_Str=showShort($str,4);//Intercept the first 4 Chinese characters , the result is: this character...
Echo "$Short_Str";
Function csubstr($str,$start,$len)
{
$strlen=strlen($str);
$clen=0;
for( $i=0;$i<$strlen;$i++,$clen++)
{
if ($clen>=$start+$len)
break;
if(ord(substr($str,$i,1)) >0xa0)
{
if ($clen>=$start)
$tmpstr.=substr($str,$i,2);
$i++;
} bbs.it-home.org
else
{
 if ($clen>=$start)
$tmpstr.=substr($str,$i,1);
}
}
return $tmpstr;
}
Function showShort($ str,$len)
{
$tempstr = csubstr($str,0,$len);
if ($str<>$tempstr)
$tempstr .= "..."; //What to end with , just modify it here.
return $tempstr;
}

Here we share a more concise method of intercepting the length of Chinese characters:

$len = 19;
$text = "How to display only the first few words of a long news title and replace it with...?";
echo strlen ($text)<=$len ? $text : (substr($text,0,$len).chr(0)."....");