note 81081 added to ref.array
| From: | dennis at DONTSPAMME dot born05 dot nl | Date: | Wed, 13 Feb 2008 15:22:53 +0000 |
| Subject: | note 81081 added to ref.array | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-136117@lists.php.net to get a copy of this message | ||
I haven't completely figured out when or why an array gets referenced or copied, but it gave me
quite the headache..
So i wrote a function which recursively copies an array while preserving keys and also clones
objects if encountered
<?php
/**
* make a recursive copy of an array
*
* @param array $aSource
* @return array copy of source array
*/
function array_copy ($aSource) {
// check if input is really an array
if (!is_array($aSource)) {
throw new Exception("Input is not an Array");
}
// initialize return array
$aRetAr = array();
// get array keys
$aKeys = array_keys($aSource);
// get array values
$aVals = array_values($aSource);
// loop through array and assign keys+values to new return array
for ($x=0;$x<count($aKeys);$x++) {
// clone if object
if (is_object($aVals[$x])) {
$aRetAr[$aKeys[$x]]=clone $aVals[$x];
// recursively add array
} elseif (is_array($aVals[$x])) {
$aRetAr[$aKeys[$x]]=array_copy ($aVals[$x]);
// assign just a plain scalar value
} else {
$aRetAr[$aKeys[$x]]=$aVals[$x];
}
}
return $aRetAr;
}
?>
I hope i can save someone else's aspirine with this ;)
----
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Manual Page -- http://www.php.net/manual/en/ref.array.php
Edit -- https://master.php.net/note/edit/81081
Del: integrated -- https://master.php.net/note/delete/81081/integrated
Del: useless -- https://master.php.net/note/delete/81081/useless
Del: bad code -- https://master.php.net/note/delete/81081/bad+code
Del: spam -- https://master.php.net/note/delete/81081/spam
Del: non-english -- https://master.php.net/note/delete/81081/non-english
Del: in docs -- https://master.php.net/note/delete/81081/in+docs
Del: other reasons-- https://master.php.net/note/delete/81081
Reject -- https://master.php.net/note/reject/81081
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