PHP Chinese and English string interception function (including html)

Here is an interception function that supports the mixing of Chinese characters and English, including the processing of html tags. Let’s take a look at this interception function.

Chinese and English string interception functions (including html), examples The code is as follows:

function get_word($string, $length, $dot = '..',$charset='gbk') {

if(strlen($string) <= $length) {

return $ string;

}

$string = str_replace(array(' ',' ', '&', '"', '<', '>'), array('','','&' , '"', '<', '>'), $string);

$strcut = '';

if(strtolower($charset) == 'utf-8') {

$n = $tn = $noc = 0;

while($n < strlen($string)) {

$t = ord($string[$n]);

if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {

$tn = 1; $n++; $noc++;

} elseif(194 <= $t && $ t <= 223) {

$tn = 2; $n += 2; $noc += 2;

} elseif(224 <= $t && $t < 239) {

$tn = 3; $n += 3; $noc += 2;

} elseif(240 <= $t && $t <= 247) {

$tn = 4; $n += 4; $noc + = 2;

} elseif(248 <= $t && $t <= 251) {

$tn = 5; $n += 5; $noc += 2;

} elseif($t = = 252 || $t == 253) {

$tn = 6; $n += 6; $noc += 2;

} else {

$n++;

}

if($noc > ;= $length) {

break;

}

}

if($noc > $length) {

$n -= $tn;

}

$strcut = substr($string, 0, $n);

} else {

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

$strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];

}

}

return $strcut.$dot;

}

$str = "Welcome visit Concise nowamagic";

$str_result = get_word($str, 12);

echo $str_result;