- var_dump: documentation ( source)
- urlencode: documentation ( source)
- array_merge: documentation ( source)
<?php
var_dump(urlencode ( 'title=lorem ipsum' ));
$array1 = array('111' => 'test11', '222' => 'test12');
$array2 = array('111' => 'test21', '222' => 'test22');
$array3 = array('111' => 'test31', '222' => 'test32');
var_dump(array_merge($array1, $array2, $array3));