- print_r: documentation ( source)
- array_merge: documentation ( source)
<?php
$all = array(array("name"=>"peter","age"=>"15","sex"=>"male"),array("name"=>"mary","age"=>"24","sex"=>"female"));
$a = array("0"=>"peter","1"=>"15","2"=>"male");
$b = array("0"=>"mary","1"=>"24","2"=>"female");
$c = array_merge($a,$b);
print_r($c);