- 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("name"=>"peter","age"=>"15","sex"=>"male");
$b = array("name"=>"mary","age"=>"24","sex"=>"female");
$c = array_merge($a,$b);
print_r($c);