(PHP 5, PHP 7)
ReflectionClass::isInternal — Checks if class is defined internally by an extension, or the core
public ReflectionClass::isInternal ( ) : bool
Checks if the class is defined internally by an extension, or the core, as opposed to user-defined.
This function has no parameters.
Returns true on success or false on failure.
Example #1 Basic usage of ReflectionClass::isInternal()
<?php
$internalclass = new ReflectionClass('ReflectionClass');
class Apple {}
$userclass = new ReflectionClass('Apple');
var_dump($internalclass->isInternal());
var_dump($userclass->isInternal());
?> The above example will output:
bool(true) bool(false)
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https://www.php.net/manual/en/reflectionclass.isinternal.php