federicot federicot - 5 months ago 14
PHP Question

Deleting an item in a foreach loop in PHP

I have a foreach loop where I want to unset an item from an array if certain conditions are met, like this:

foreach ($array as $element) {
if (conditions) {
unset($element);
}
}


But the element is not unset after that. What am I doing wrong? Am I unsetting a reference to the actual element or something like that?

Answer

Simple Solution, unset the element by it's index:

foreach ($array as $key => $element) {
    if (conditions) {
        unset($array[$key]);
    }
}

Just unsetting $element will not work, because this variable is not a reference to the arrays element, but a copy. Accordingly changing the value of $element will not change the array too.