- json_decode: documentation ( source)
- print_r: documentation ( source)
<?php
$details='[{"percentage":"12.5","id":10},{"percentage":"35","id":12},{"percentage":"5","id":52}]';
$data=(json_decode($details));
foreach($data as $d){
if($d['id'] == 52){
print_r($d['percentage']);
}
}