/*
Title: Enumeration of Constants in PHP
Example with and without explicit values
*/
// -------------------------------
// Enum WITHOUT explicit values
// PHP automatically assigns no numeric values,
// but you can still use them as named constants.
// -------------------------------
enum Color {
case Red; // ordinal-like position 0
case Green; // 1
case Blue; // 2
}
// -------------------------------
// Enum WITH explicit values
// Backed enums allow assigning string or int values.
// -------------------------------
enum Status: int {
case OK = 1;
case Warning = 5;
case Error = 6;
case Critical = 10;
}
echo "Enum without explicit values:\n";
echo "Red = " . Color::Red->name . "\n";
echo "Green = " . Color::Green->name . "\n";
echo "Blue = " . Color::Blue->name . "\n";
echo "\nEnum with explicit values:\n";
echo "OK = " . Status::OK->value . "\n";
echo "Warning = " . Status::Warning->value . "\n";
echo "Error = " . Status::Error->value . "\n";
echo "Critical = " . Status::Critical->value . "\n";
/*
run:
Enum without explicit values:
Red = Red
Green = Green
Blue = Blue
Enum with explicit values:
OK = 1
Warning = 5
Error = 6
Critical = 10
*/
