note 103658 deleted from language.references.spot by danbrown
| From: | danbrown@php.net | Date: | Tue, 26 Apr 2011 19:01:35 +0000 |
| Subject: | note 103658 deleted from language.references.spot by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-179177@lists.php.net to get a copy of this message | ||
Note Submitter: abimaelrc at gmail dot com
----
One way to check if is a reference
<?php
$a = 1;
$b =& $a;
$c = 2;
$d = 3;
function is_reference($var){
$val = $GLOBALS[$var];
foreach($GLOBALS as $k => $v){
if($k != 'GLOBALS'
&& $k != '_POST'
&& $k != '_GET'
&& $k != '_COOKIE'
&& $k != '_FILES'
&& $k != $var
&& !is_array($v)
){
usleep(1);
$GLOBALS[$k] = md5(microtime());
}
}
return $val != $GLOBALS[$var];
}
var_dump(is_reference('a')); // bool(true)
var_dump(is_reference('b')); // bool(true)
var_dump(is_reference('c')); // bool(false)
var_dump(is_reference('d')); // bool(false)
?>
This wont check reference inside arrays.