- array_map: documentation ( source)
- print_r: documentation ( source)
- implode: documentation ( source)
<?php
$hire = array(
'hiring' => array(
(int) 1 => '10',
(int) 2 => '5',
(int) 3 => '8',
(int) 4 => '15'
)
);
$integerIDs = array_map('intval', implode(',', $hire));
$hire['hiring'] = implode(',',$hire['hiring']);
print_r($hire['hiring']);
echo $integerIDs;