download this file: class.strcut.php
view text/plain: class.strcut.php file encoding: UTF-8
[goback]
<?php
##
## this file name is 'class.strcut.php'
##
## korean string cut class
##
## [author]
## - san2 <san2(at)linuxchannel.net>, http://linuxchannel.net
##
## [changes]
## - 2005.01.04, bug fixed
## - 2002.11.22, add check_tag()
## - 2002.10.04
##
## [download]
## - http://ftp.linuxchannel.net/devel/php_strcut/
##
## [demo]
## - http://linuxchannel.net/gaggle/strcut.php
##
## [usage]
## $strcut = new strcut;
## echo $strcut->cut('string...string',10);
##
class strcut
{
## reference : http://jsboard.kldp.org/
##
function unhtmlspecialchars($str)
{
$tr = array_flip(get_html_translation_table(HTML_SPECIALCHARS));
$str = preg_replace(array('/'/','/&/','/&(nbsp;|#032)/'),array("'",'&',' '),$str);
$str = strtr($str,$tr);
return $str;
}
## source : http://jsboard.kldp.org/
##
## arguments :
## $str : string, target string
## $html : boolean, if $str included HTML TAG, then set to 1
##
function ugly_han($str, $html=0)
{
if(!$html) return preg_replace('/&(#|amp)/','&\\1',$str);
else return str_replace('&','&',$str);
}
function check_tag($str)
{
## type1 : <IMG SRC=ddd>, <BR>, <P>, etc ugly TAG
##
if(preg_match(';<[^>]*$;',$str))
{
$str = preg_replace(';<[^>]*$;','',$str);
//$type = ' _1'; // debugging
}
## type2 : <A HREF=ddd>aaaaa<IMG SRC=xxx.img></A>, <PRE>dddddd</PRE>
##
if(!preg_match(';<([A-Z]+)[^>]*>.*</\\1>.*$;i',$str))
{
$from = array(';</.*$;',';<([A-Z]+)([^>]*)>(.*)$;i',';<</;',';<[^>]*$;');
$to = array('','<\\1\\2>\\3</\\1>','</','');
$str = preg_replace($from,$to,$str);
//$type .= ' _2'; // debugging
}
return $str . $type;
}
## reference : http://www.phpschool.com/bbs2/inc_view.html?id=6167&code=tnt2
##
## arguments :
## $str string, target string
## $len integer, want to cutting length
## $html boolean, default 0, if $str included HTML TAG, then set to 1
## $ugly boolean, default 0, if checked ugly_han(), then set to 1
##
## return :
## $str string, cutted string
##
function cut($str, $len, $html=0, $ugly=0, $suffix='')
{
if(strlen($str) <= $len) return $str;
if(!$ugly) $str = $this ? $this->ugly_han($str,$html) : strcut::ugly_han($str,$html);
if(!$html) $str = $this ? $this->unhtmlspecialchars($str) : strcut::unhtmlspecialchars($str);
$i = $len - 1;
while(ord($str[$i]) & 0x80) $i--;
$fix = $len - (($len + $i + 1) & 1);
$cutted = substr($str, 0, $fix);
## good idea, but bad speed
##
//if($str[$fix-1].$str[$fix] == '&#') $str = preg_replace('/&[^&]*$/','',$cutted);
//else $str = preg_replace('/&#[0-9]*$/','',$cutted);
$str = preg_replace('/(&#[0-9]*|&)$/','',$cutted);
if($html) $str = $this ? $this->check_tag($str) : strcut::check_tag($str);
else {
$str = htmlspecialchars($str);
$str = str_replace('&','&',$str);
}
return $str.$suffix;
}
} // end of strcut class
?>