- print_r: documentation ( source)
<?php
$user = [];
$arr = [[ 'chatduration' => 124.502,'username' => 'bhavin'],[ 'chatduration' => 124.502,'username' => 'bhavin']];
foreach($arr as $record){
if (array_key_exists($record['username'],$record))
{
$user[$record['username']] = $user[$record['username']] + $record['chatduration'];
}
else
{
$user[$record['username']] = $record['chatduration'];
}
}
print_r($user);