- print_r: documentation ( source)
<?php
$array1 = array (
'1' => 'A',
'2' => 'B',
'3' => 'C'
);
$array2 = array (
'1' => 'A',
'4' => 'B',
'5' => 'D'
);
$array3 = array (
'5' => 'A',
'6' => 'E',
'7' => 'D'
);
$array4 = array (
'4' => 'A',
'7' => 'B',
'10' => 'C'
);
function test() {
$count = func_get_args();
print_r($count);
}