note 60031 deleted from function.substr by nlopess
| From: | nlopess@php.net | Date: | Fri, 23 Dec 2005 18:53:12 +0000 |
| Subject: | note 60031 deleted from function.substr by nlopess | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-100629@lists.php.net to get a copy of this message | ||
Note Submitter: risto at adcentral dot pl
Reason: useless
----
UTF-8 safe substr
define('ENABLE_UTF8_NOMB',true);
define('ENABLE_UTF8_MB',false);
/**
* UTF8 strlen
*/
function _mb_strlen($s) {
if(ENABLE_UTF8_MB) {
return mb_strlen($s);
}
if(ENABLE_UTF8_NOMB) {
return strlen(utf8_decode($s));
}
return strlen($s);
}
/**
* UTF8 substr
*/
function _mb_substr($s,$b,$l=NULL) {
/* UTF8 ready */
if(ENABLE_UTF8_MB) {
return is_null($l) ? mb_substr($s,$b) : mb_substr($s,$b,$l);
}
/* UTF8 ready */
if(ENABLE_UTF8_NOMB) {
if($b < 0 ) {
$b = _mb_strlen($s) + (int) $b;
}
if( is_null($l) || _mb_strlen($s)<($l+$b)) {
$l = '*';
} else {
if($l < 0 )
$l = _mb_strlen($s) + (int) $l;
$l = '{0,'.preg_quote($l).'}';
}
preg_match('/^.{'.preg_quote($b).'}(.'.$l.')/us', $s, $m);
return ( isset($m[1]) ) ? $m[1] : false;
}
return ( is_null($l) ) ? substr($s,$b) : substr($s,$b,$l);
}