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PHP Enumeration Constant Reflection

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Proper enumerations in PHP are hard to come by. This uses a class as a pseudo enumeration. Sometimes you'll want to lookup the string name side of the enum when you have the value (ie, you have "1" and you want the string "Flood").

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  1. class Emergency {
  2.   const Fire = 0;
  3.   const Flood = 1;
  4.   const NoMilkInFridge = 2;
  5. }
  6.  
  7. $value = 0; // this is an example of the data you might have
  8.  
  9. $refl = new ReflectionClass('Emergency');
  10. $enum = $refl->getConstants(); // returns array. key is string, value is integer.
  11. $key = array_keys($enum, $value);
  12. $name = $key[0]; // you now have "Flood"

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