本文给大家介绍php截取字符串函数收集

1、截取GB2312字符用的函数
0xa0) {
$tmpstr .= substr($str, $i, 2);
$i++;
} else
$tmpstr .= substr($str, $i, 1);
}
return $tmpstr;
}
?>

2. 截取utf8编码的多字节字符串

3. UTF-8、GB2312都支持的汉字截取函数

$sublen) return join(”, array_slice($t_string[0], $start, $sublen)).”…”;
return join(”, array_slice($t_string[0], $start, $sublen));
}
else
{
$start = $start*2;
$sublen = $sublen*2;
$strlen = strlen($string);
$tmpstr = ”;

for($i=0; $i< $strlen; $i++) { if($i>=$start && $i< ($start+$sublen)) { if(ord(substr($string, $i, 1))>129)
{
$tmpstr.= substr($string, $i, 2);
}
else
{
$tmpstr.= substr($string, $i, 1);
}
}
if(ord(substr($string, $i, 1))>129) $i++;
}
if(strlen($tmpstr)< $strlen ) $tmpstr.= “…”; return $tmpstr; } } $str = “abcd需要截取的字符串”; echo cut_str($str, 8, 0, ‘gb2312′); ?>

4. BugFree 的字符截取函数
=224 )
{
$StringTMP = substr($String,$I,3);
$I = $I + 3;
}
elseif( ord($StringTMP) >=192 )
{
$StringTMP = substr($String,$I,2);
$I = $I + 2;
}
else
{
$I = $I + 1;
}
$StringLast[] = $StringTMP;
}
$StringLast = implode(“”,$StringLast);
if($Append)
{
$StringLast .= “…”;
}
return $StringLast;
}
}

$String = “book.chinaz.com — 站长书库、站长教程”;
$Length = “18″;
$Append = false;
echo sysSubStr($String,$Length,$Append);
?>