Each key

each_key

array_keys

1 PHP

$member = array( 'ID'=>102, 'Name'=>'YONEZAWA Akinori', 'Address'=>'Naha, Okinawa' );
$keys = array_keys($member);
print_r($keys);
// Array
// (
//     [0] => ID
//     [1] => Name
//     [2] => Address
// )

2 Ruby

member = {
  ID: 102,
  Name: "YONEZAWA Akinori",
  Address: "Naha, Okinawa"
}
puts member.each_key { |k| puts k }
# ID
# Name
# Address

3 같이 보기

• each_value
• foreach