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<?php $arr = [ 'k1' => 0, 'k2' => 1, 'k3' => 0, 'k4' => 0, 'k5' => 3, 'k6' => 0, 'k7' => 4, 'k8' => 0, 'k9' => 0, 'k10' => 0, 'k11' => 0, 'k12' => 0, 'k13' => 0, 'k14' => 0, 'k15' => 0, 'k16' => 0, 'k17' => 0, ]; asort($arr); var_dump($arr);