[Resolved] [Resolved] How to "pop" a specific array element?

ppowell

I need to remove an array element anywhere in the array, all the while keeping the array order intact.

Other than re-sorting and array_shift() or array_pop(), what do I do?

Thanx
Phil

dalecosp

function array_trim ($array, $index) {
   if (is_array ( $array) ) {
     unset ($array[$index]);
     array_unshift ($array, array_shift ($array));
     return $array;
     }
   else {
     return false;
     }
   }

$index should be an integer. Don't think it'll work for associative arrays, but like I said, it's quite untested...

ppowell

Turns out the problem was more simplistic than that.. unset($array[$key]) is the normal way to go, except that in $_SESSION variables it's a whole new ballgame if register_globals is turne d off, using PHP 4.1.2+ and if you are trying to destroy session variables within a class method.

unset($_SESSION[$key]);
session_unregister("$key");

Thanx, the function looks cool and might come in handy with a slight modification of:

if (isset($array[$key])) // DO THE FUNCTION

Phil

dalecosp

Originally posted by ppowell
Turns out the problem was more simplistic than that.. unset($array[$key]) is the normal way to go, except that in $_SESSION variables it's a whole new ballgame if register_globals is turne d off, using PHP 4.1.2+ and if you are trying to destroy session variables within a class method.

Yah, a lot of conditions there 😉

Thanx, the function looks cool and might come in handy with a slight modification of:
if (isset($array[$key])) // DO THE FUNCTION
Phil [/B]

The function removes a key/value pair and renumbers the array. Sweet because it's recursive. Consider (though you probably have already):

% cat shift
<?php

function array_trim ( $array, $index ) {
   if ( is_array ( $array ) ) {
     unset ( $array[$index] );
     array_unshift ( $array, array_shift ( $array ) );
     return $array;
     }
   else {
     return false;
     }
   }

$fooray=array("foo","bar","baz","qux","garply");
$foobar=array_trim($fooray, 3);
print_r($foobar);
?>

% php shift
Array
(
    [0] => foo
    [1] => bar
    [2] => baz
    [3] => garply
)

As if 'twere never even there!

Have a good day....

ppowell

BTW Can someone look into the repost-protection issue with the [Resolved] flag in the subject? If you click the "Resolved" link a bit too hard see the results? 🙁

Phil