取字符串,php 截取中文字符串
php对中文的支持不怎么好哦,特别在我一个字符串中有中文与英语时截取就是个问题了,处理不好就会出现乱码了,下面我们这截取中文字符串函数就很好的处理了这件事情。
<?php
function MooCutstr($string, $length, $dot = ' ...') {
global $charset;
if (strlen($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];
}
}
$strcut = str_replace(array(
'&',
'"',
'<',
'>'
) , array(
'&',
'"',
'<',
'>'
) , $strcut);
return $strcut . $dot;
}教程地址:http://www.phprm.com/code/3b3386ad016e545ab43253679c852426.html
欢迎转载!但请带上文章地址^^