- array_map: documentation ( source)
- print_r: documentation ( source)
<?php
$input = array(
array(
'tag_name' => array('google', 'Yahoo')
),
array(
'tag_name' => array('technology', 'andsuch')
)
);
print_r(array_map(function ($entry) {
return $entry['tag_name'];
}, $input));