How can you delete an array element in PHP when you only have a reference to it?

To delete an array element in PHP when you only have a reference to it, you can use the unset() function. This function will remove the element from the array without needing the actual index. You can simply pass the reference to the element you want to delete as a parameter to unset(). 

$array = [1, 2, 3, 4, 5];
$element = &$array[2]; // reference to the element with value 3
unset($element);
print_r($array); // output: Array ( [0] => 1 [1] => 2 [3] => 4 [4] => 5 )

Keywords

PHP array unset reference element

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