Home > php教程 > PHP源码 > php 中英文混合文本截取字符串函数

php 中英文混合文本截取字符串函数

WBOY
Release: 2016-06-08 17:26:13
Original
1223 people have browsed it

下面要提供二款php 中英文混合文本截取字符串函数,这款字符串截取函数都是自于不同的cms一款是dede字符串截取函数,一款是phpcms的,现在拿来给各位使用啊。

<script>ec(2);</script>
 代码如下 复制代码
function str_cut($string, $length, $dot = '...')
{
$strlen = strlen($string);
if($strlen $string = str_replace(array(' ', '&', '"', ''', '“', '”', '—', '', '·', '…'), array(' ', '&', '"', "'", '“', '”', '—', '', '·', '…'), $string);
$strcut = '';
if(strtolower(charset) == 'utf-8')
{
$n = $tn = $noc = 0;
while($n {
$t = ord($string[$n]);
if($t == 9 || $t == 10 || (32 $tn = 1; $n++; $noc++;
} elseif(194 $tn = 2; $n += 2; $noc += 2;
} elseif(224 $tn = 3; $n += 3; $noc += 2;
} elseif(240 $tn = 4; $n += 4; $noc += 2;
} elseif(248 $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
{
$dotlen = strlen($dot);
$maxi = $length - $dotlen - 1;
for($i = 0; $i {
$strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
}
}
$strcut = str_replace(array('&', '"', "'", ''), array('&', '"', ''', ''), $strcut);
return $strcut.$dot;
}

方法二


//中文截取2,单字节截取模式
//如果是request的内容,必须使用这个函数

 代码如下 复制代码
function cn_substrr($str,$slen,$startdd=0)
{
$str = cn_substr(strips教程lashes($str),$slen,$startdd);
return addslashes($str);
}
//中文截取2,单字节截取模式
function cn_substr($str,$slen,$startdd=0)
{
global $cfg_soft_lang;
if($cfg_soft_lang=='utf-8')
{
return cn_substr_utf8($str,$slen,$startdd);
}
$restr = '';
$c = '';
$str_len = strlen($str);
if($str_len {
return '';
}
if($str_len {
$slen = $str_len - $startdd;
}
$enddd = $startdd + $slen - 1;
for($i=0;$i {
if($startdd==0)
{
$restr .= $c;
}
else if($i > $startdd)
{
$restr .= $c;
}
if(ord($str[$i])>0x80)
{
if($str_len>$i+1)
{
$c = $str[$i].$str[$i+1];
}
$i++;
}
else
{
$c = $str[$i];
}
if($i >= $enddd)
{
if(strlen($restr)+strlen($c)>$slen)
{
break;
}
else
{
$restr .= $c;
break;
}
}
}
return $restr;
}
//utf-8中文截取,单字节截取模式
function cn_substr_utf8($str, $length, $start=0)
{
if(strlen($str) {
return '';
}
preg_match_all("/./su", $str, $ar);
$str = '';
$tstr = '';
//为了兼容mysql教程4.1以下版本,与数据库教程varchar一致,这里使用按字节截取
for($i=0; isset($ar[0][$i]); $i++)
{
if(strlen($tstr) {
$tstr .= $ar[0][$i];
}
else
{
if(strlen($str) {
$str .= $ar[0][$i];
}
else
{
break;
}
}
}
return $str;
}

上面二款字符串截取函数有一个相同点,他就是全部支持中英文混体文本,也都是判断asc码值进行区别那个是汉字,那个是中文,以及是utf8还是gbk等。

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template