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<?php $array = array( 0 => array( "id" => 3412341233214, "number" => 21000 ), 1 => array( "id" => 12121212121212, "number" => 18000 ), 2 => array( "id" => 12121212121212, "number" => 17000 ) ); $tmp = Array(); foreach($array as $obj) { if(!isset($tmp[$obj['id']])) { $tmp[$obj['id']] = array_merge(Array('number'=>1),$obj); continue; } $tmp[$obj['id']]['number'] += $obj['number']; } echo '<pre>'; print_r(array_values($tmp)); echo '</pre>';
Output for git.master, git.master_jit, rfc.property-hooks
<pre>Array ( [0] => Array ( [number] => 21000 [id] => 3412341233214 ) [1] => Array ( [number] => 35000 [id] => 12121212121212 ) ) </pre>

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