<?php
function str_cut($string, $start=0,$length, $dot = '..') {
$strlen = strlen($string);
if($strlen <= $length) return $string;
$string = str_replace(array(' ', '&', '"', ''', '“', '”', '—', '<', '>', '·', '…'), array(' ', '&', '"', "'", '“', '”', '—', '<', '>', '·', '…'), $string);
$strcut = '';
$n = $tn = $noc = 0;
while($n < $strlen) {
$t = ord($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, $start, $n);
$strcut = str_replace(array('&', '"', "'", '<', '>'), array('&', '"', ''', '<', '>'), $strcut);
if( $strlen==strlen($strcut)){
return $strcut;
}else{
return $strcut.$dot;
}
}
echo str_cut("首页显示标题太长了就会把表格撑破比较难看谁能帮我写一段代码",0,14,'...');
/*或者使用mb_substr函数
用法如：
mb_substr("首页显示标题太长了就会把表格撑破比较难看谁能帮我写一段代码",0,14,'utf-8');
mb_substr("首页显示标题太长了就会把表格撑破比较难看谁能帮我写一段代码",0,14,'gbk');
*/
?>