Script ini berguna untuk melakukan sorting berdasarkan subkey pada array multi dimensi. function subsort($a,$subkey=0) { foreach($a as $k=>$v) { $b[$k] = $v[$subkey]; } asort($b); foreach($b as $key=>$val) { $c[] = $a[$key]; } return $c; } function subasort($a,$subkey=0) { foreach($a as $k=>$v) { $b[$k] = $v[$subkey]; } asort($b); foreach($b as $key=>$val) { $c[$key] = $a[$key]; } return $c; } function subarsort($a,$subkey=0) { foreach($a as $k=>$v) { $b[$k] = $v[$subkey]; } arsort($b); foreach($b as $key=>$val) { $c[$key] = $a[$key]; } return $c; } function subsorti($a,$subkey=0) { foreach($a as $k=>$v) { $b[$k] = strtolower($v[$subkey]); } asort($b); foreach($b as $key=>$val) { $c[] = $a[$key]; } …