21. What will be the output of the following PHP code?
<?php
$number = array(0,1,two,three,four,5);
$num = preg_grep("/[0-5]/", $number);
print_r($num);
?>
<?php
$number = array(0,1,two,three,four,5);
$num = preg_grep("/[0-5]/", $number);
print_r($num);
?>