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<?php $mainArray = array( 0 =>array( "key1" => array(7,4,5), 'key2' => array('cc','aa') ) ); foreach($mainArray as $secondIndex=>$secondArray){ foreach($secondArray as $index=>$array){ $secondArray[$index] = array_multisort($array); } $mainArray[$secondIndex] = $secondArray; } var_dump($mainArray);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> array(2) { ["key1"]=> bool(true) ["key2"]=> bool(true) } }

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