class_exists
Checks if the class has been defined
&reftitle.description;
boolclass_exists
stringclass_name
boolautoloadtrue
This function checks whether or not the given class has been defined.
&reftitle.parameters;
class_name
The class name. The name is matched in a case-insensitive manner.
autoload
Whether or not to call &link.autoload; by default.
&reftitle.returnvalues;
Returns &true; if class_name is a defined class,
&false; otherwise.
&reftitle.changelog;
&Version;
&Description;
5.0.2
No longer returns &true; for defined interfaces. Use
interface_exists.
5.0.0
The autoload parameter was added.
&reftitle.examples;
<function>class_exists</function> example
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<parameter>autoload</parameter> parameter example
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&reftitle.seealso;
function_exists
interface_exists
get_declared_classes