Description:
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mb_decode_numericentity() expects 3 parameters but in the documentation the signature has 4 parameters.
The last one should be removed.

See: https://www.php.net/manual/en/function.mb-decode-numericentity.php

Also when the function is called with too much parameters the warning is wrong.
See the example below.

Test script:
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<?php

$r = new ReflectionFunction('mb_decode_numericentity');
var_dump($r->getNumberOfParameters());

$str = mb_decode_numericentity('', [], "UTF-8", true, 'foo');

Expected result:
----------------
int(3)

Warning: mb_decode_numericentity() expects at most 3 parameters, 5 given in /in/VFjAX on line 6

Actual result:
--------------
int(3)

Warning: mb_decode_numericentity() expects at most 4 parameters, 5 given in /in/VFjAX on line 6