How can i check to see if a static class has been declared? ex Given the class
class bob {
function yippie() {
echo "skippie";
}
}
later in code how do i check:
if(is_a_valid_static_object(bob)) {
bob::yippie();
}
so i don't get: Fatal error: Class 'bob' not found in file.php on line 3
You can also check for existence of a specific method, even without instantiating the class
echo method_exists( bob, 'yippie' ) ? 'yes' : 'no';
If you want to go one step further and verify that "yippie" is actually static, use the Reflection API (PHP5 only)
try {
$method = new ReflectionMethod( 'bob::yippie' );
if ( $method->isStatic() )
{
// verified that bob::yippie is defined AND static, proceed
}
}
catch ( ReflectionException $e )
{
// method does not exist
echo $e->getMessage();
}
or, you could combine the two approaches
if ( method_exists( bob, 'yippie' ) )
{
$method = new ReflectionMethod( 'bob::yippie' );
if ( $method->isStatic() )
{
// verified that bob::yippie is defined AND static, proceed
}
}
bool class_exists( string $class_name [, bool $autoload ])
This function checks whether or not the given class has been defined.
