    interface_exists (PHP 5 >= 5.0.2, PHP 7, PHP 8)
interface_exists — Checks if the interface has been defined   Description interface_exists(string $interface, bool $autoload = true): bool  Checks if the given interface has been defined.    Parameters
  interface
   The interface name    autoload
   Whether to call __autoload or not by default.      Return Values  Returns true if the interface given by interface has been defined, false otherwise.    Examples
 Example #1 interface_exists() example  <?php
// Check the interface exists before trying to use it
if (interface_exists('MyInterface')) {
    class MyClass implements MyInterface
    {
        // Methods
    }
}

?>     See Also
 get_declared_interfaces() - Returns an array of all declared interfaces class_implements() - Return the interfaces which are implemented by the given class or interface class_exists() - Checks if the class has been defined enum_exists() - Checks if the enum has been defined   


    
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