Checks if the class has been defined
Syntax
class_exists ( string $class_name [, bool $autoload = TRUE ] ) : bool
Parameters
class_nameThe class name. The name is matched in a case-insensitive manner.
autoloadWhether or not to call __autoload by default.
Return
Returns TRUE if class_name is a defined class, FALSE otherwise.
Examples
1 · class_name
<?
class myclass
{
}
$class_name = "myclass";
$return = class_exists($class_name);
var_export($return);
?>true
2 · autoload
<?
class myclass
{
}
$class_name = "myclass";
$autoload = false;
$return = class_exists($class_name, $autoload);
var_export($return);
?>true
3 · 1
<?
class myclass
{
}
$class_name = "myclass";
$return = class_exists($class_name);
if ($return)
{
$myobject = new myclass;
var_export($myobject);
}
?>\myclass::__set_state(array( ))
