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<?php $arr = array ( 10 => array('id' => 'dix', 'aa' => '1010'), 100 => array('id' => 'cent', 'aa' => '100100'), 2 => array('id' => 'deux', 'aa' => '22'), 7 => array('id' => 'sept', 'aa' => '77')); // id sorting function so ($a, $b) { return (strcmp ($a['id'],$b['id'])); } echo uasort($arr, 'so'); ?>

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