How to Reindex an Array After Removing Elements in PHP?

Reindexing an Array after Removing Elements

When unsetting elements from an array, it can cause the array keys to become discontinuous. To reset the keys to be zero-based again, you can employ the following method:

Using array_values():

PHP provides the array_values() function, which returns a new array with numerically reindexed keys, starting from zero. To use it, simply pass the original array as an argument:

<code class="php">$array = array(1, 2, 3, 4, 5);

foreach ($array as $i => $info) {
    if ($info == 1 || $info == 2) {
        unset($array[$i]);
    }
}

$array = array_values($array);

print_r($array);</code>

Output:

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

By using array_values(), the keys in the modified array are now reindexed to be continuous and start from zero.

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