The get_declared_classes Function
The get_declared_classes function returns an array containing the names of all classes
that have been declared in the current script, including both user-defined classes
and built-in PHP classes. The function does not accept parameters.
Syntax
get_declared_classes();
Example
Get a list of all declared classes in the script:
<?php
$res = get_declared_classes();
print_r($res);
?>
Code execution result:
['stdClass', 'Exception', 'Error', ...] // and other built-in PHP classes
Example
Add a custom class and look at the result:
<?php
class MyClass {}
$res = get_declared_classes();
print_r($res);
?>
Code execution result:
['stdClass', 'Exception', 'Error', ..., 'MyClass']
Example
Check for a specific class in the list:
<?php
class TestClass {}
$classes = get_declared_classes();
$res = in_array('TestClass', $classes);
var_dump($res);
?>
Code execution result:
true
See Also
-
the get_declared_interfaces function,
which returns interfaces -
the get_declared_traits function,
which returns traits -
the class_exists function,
which checks a class -
the get_defined_functions function,
which returns functions
