- print_r: documentation ( source)
- array_merge: documentation ( source)
<?php
$array =[];
$array['info']['user']['name'] = 'Jack';
$array['info']['user']['age'] = '15';
$foo = ['location' => 'bar', 'something' => 'foo', 'bar' => 'some'];
array_merge($array['info'], $foo);
print_r($array);
//expected result
/*
[info] => [
'location' => 'bar',
'something' => 'foo', '
'bar' => 'some'
'user' => [
'name' => Jack
'age' => 15
]
]
*/