- print_r: documentation ( source)
- array_merge: documentation ( source)
<?php
$array_1 = array('something1', 'foo');
$array_2 = array('something3', 'bar');
$array_3 = array();
$array_4 = array('something1', 'foobar');
$array_5 = "not an array";
foreach([$array_1,$array_2,$array_3,$array_4,$array_5] AS $array) {
$final = array_merge((array)$array,(array)$final);
};
print_r($final);