PHP Chinese-English mixed string intercept function code _php tutorial

Copy CodeThe code is as follows:
function Get_word ($string, $length, $dot = '.. ', $charset = ' GBK ') {
if (strlen ($string) <= $length) {
return $string;
}
$string = Str_replace (', ', ' & ', ' ' ', ' < ', ' > '), 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 | | (<= $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 (<= $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;

Test Run Results:
Welcome to visit.

http://www.bkjia.com/PHPjc/323957.html www.bkjia.com true http://www.bkjia.com/PHPjc/323957.html techarticle Copy the code as follows: function Get_word ($string, $length, $dot = ': ', $charset = ' GBK ') {if (strlen ($string) = $length) {return $s Tring } $string = Str_replace (Array (', ', ' ...

