Edit report at http://bugs.php.net/bug.php?id=52281&edit=1
ID: 52281
Comment by: bastard dot internets at gmail dot com
Reported by: keithm at aoeex dot com
Summary: New Unref function - breaks reference between
variables.
Status: Open
Type: Feature/Change Request
Package: Unknown/Other Function
PHP Version: Irrelevant
Block user comment: N
New Comment:
keithm at aoeex dot com - Basically, you mean a shortcut for
referencing: "$temp_b = $b; $b =& $temp_b; unset($temp_b);"? In other
words...
<?php
$a = 1;
$b =& $a; // reference made
$temp_b = $b; $b =& $temp_b; unset($temp_b); // break reference to $a,
but could be shortened to a new built-in function "unref($b);"
$b = 2;
echo $a."\n"; // 1
echo $b."\n"; // 2
?>
The only user defined function I could get to work even similarly is...
<?php
function &unref($var) {
return $var;
}
$b =& unref($a);
?>
With these shortcuts in mind, is a new built-in function still needed?
Previous Comments:
------------------------------------------------------------------------
[2010-07-07 19:02:46] keithm at aoeex dot com
Description:
------------
An addition to PHP that would be nice is a way to break a reference
between two variables, without destroying them. Currently, the only way
I found to break a reference is to use unset($var), however this causes
the variable to be destroyed which causes can cause undesirable
side-effects on classes.
Suggested function: unref($var) - Removes references from $var. The
function would give $var whatever value it currently has via it's
reference, and then removes the reference.
Test script:
---------------
Example of problem prompting this:
See: http://www.aoeex.com/extras/unref.php
Pastebin (in-case main url is down): http://pastebin.com/BtWeasC1
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Edit this bug report at http://bugs.php.net/bug.php?id=52281&edit=1
