Convert an array of strings into an array of integers

array.php

<?php

// Traditional way
$array = array('0', '1', '2');
foreach ($array as $key => $var) {
    $array[$key] = (int)$var;
}

// The nice way
$array = array('0', '1', '2');
array_walk(&amp;$array,
    create_function('&amp;$value', '$value = (int)$value;');
);

// Another nice version with array_map()
$array = array('0', '1', '2');
$array = array_map(
    create_function('$value', 'return (int)$value;'),
    $array
);