Question

Hey guys im trying to search an array for an value and then remove it. But im searching with a php variable and that seems to be the problem. So this is what I have so far:

if(isset($_REQUEST['Admin'])){
    $arr = array('HAUGMA1', 'sdasd', 'dasdasda', 'sadasd');
    $key=array_search($_REQUEST['Admin'],$arr);
    if($key!==false) 
        unset($arr[$key]);
    print_r($arr);
}

The $_REQUEST retrieves the value HAUGMA1 but when I print out the array it didn’t remove HAUGMA1 from it. What am I doing wrong? When I’m using this:

$key=array_search('HAUGMA1',$arr); 

It is working.

Answer 1

I think the problem is in relation to the value that is coming from the $_REQUEST variable.
I made the following test to show two questions:

//Array definition
$arr = array('HAUGMA1', 'sdasd', 'dasdasda', 'sadasd');
//Search
$admin = 'dasdasda';

/* First sample */

$time = microtime();

$arr = array_filter($arr, function($key) use($admin) {
    return $key != $admin;
});

print_r($arr);
echo '<br>Execution time: '.(microtime()-$time).'<br>';

/* Second sample */

$time = microtime();

$key = array_search($admin, $arr);
if($key !== false)
    unset($arr[$key]);

print_r($arr);
echo '<br>Execution time: '.(microtime()-$time).'<br>';

First: using the array_search has approximately 4x faster than array_filter.

Second: the way that your script is, the item is removed from the array without problem. Try to debug the value that is coming from the variable $_REQUEST