- print_r: documentation ( source)
- array_merge: documentation ( source)
<?php
echo "lorem Ipsum dolor sit Amet";
$array1=array("abc","def");
$array2=array("ghi","jkl");
$a1=array("red","green");
$a2=array("blue","yellow");
print_r(array_merge($a1,$a2));
print_r(array_merge($array1,$array2));
echo $array3;
?>