PHP Manuál | ||
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Predchádzajúci | Nasledujúci |
Returns TRUE if the named constant given by name has been defined, FALSE otherwise.
Poznámka: If you want to see if a variable exists, use isset() as defined() only applies to constants. If you want to see if a function exists, use function_exists().
See also define(), constant(), get_defined_constants(), function_exists(), and the section on Constants.
Predchádzajúci | Domov | Nasledujúci |
define | Hore | die |