Php/docs/reflectionreference.getid
ReflectionReference::getId
(PHP 7 >= 7.4.0)
ReflectionReference::getId — Get unique ID of a reference
Description
public ReflectionReference::getId ( ) : mixed
Returns an ID which is unique for the reference for the lifetime of that reference. This ID can be used to compare references for equality, or to maintain a map of known references.
Parameters
This function has no parameters.
Return Values
Returns an int or string of unspecified format.
Examples
Example #1 Basic ReflectionReference::getId() usage
<?php$val1 = 'foo';$val2 = 'bar';$arr = [&$val1, &$val2, &$val1];$rr1 = ReflectionReference::fromArrayElement($arr, 0);$rr2 = ReflectionReference::fromArrayElement($arr, 1);$rr3 = ReflectionReference::fromArrayElement($arr, 2);var_dump($rr1->getId() === $rr2->getId());var_dump($rr1->getId() === $rr3->getId());?>
The above example will output:
bool(false) bool(true)