Unset array element inside a foreach loop

Question

So here is my code:

<?php  $arr = array(array(2 => 5),              array(3 => 4),              array(7 => 10));  foreach ($arr as $v) {     $k = key($v);     if ($k > 5) {         // unset this element from $arr array     } }  print_r($arr);  // now I would like to get the array without array(7 => 10) member 

As you can see, I start with an array of single key => value arrays, I loop through this array and get a key of the current element (which is a single item array).

I need to unset elements of the array with key higher than 5, how could I do that? I might also need to remove elements with value less than 50 or any other condition. Basically I need to be able to get a key of the current array item which is itself an array with a single item.

Answer 1

foreach($arr as $k => $v) {     if(key($v) > 5) {         unset($arr[$k]);     } }