Question

How to delete the middle element of an array in PHP

Answer 1

function deleteMiddleElement(&$st, $size, $current) {
    if (empty($st) || $current == $size) {
        return;
    }
    
    $el = end($st);
        
    array_pop($st);
    
    deleteMiddleElement($st, $size, $current + 1);

    if ($current != (int)($size / 2)) {
        array_push($st, $el);
    }
}
        
$st = array();

array_push($st, '3');
array_push($st, '5');
array_push($st, '1');
array_push($st, 'm');
array_push($st, '9');
array_push($st, '2');
array_push($st, '7');
        
deleteMiddleElement($st, count($st), 0);

print_r($st);




/*
run:

Array
(
    [0] => 3
    [1] => 5
    [2] => 1
    [3] => 9
    [4] => 2
    [5] => 7
)

*/

 

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Answer 2

$st = array();

array_push($st, '3');
array_push($st, '5');
array_push($st, '1');
array_push($st, 'm');
array_push($st, '9');
array_push($st, '2');
array_push($st, '7');
        
unset($st[(int)(count($st) / 2)]); 

print_r($st);




/*
run:

Array
(
    [0] => 3
    [1] => 5
    [2] => 1
    [4] => 9
    [5] => 2
    [6] => 7
)

*/

 

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