php-src/Zend/tests/null_to_non_nullable_special_func.phpt
Nikita Popov b10416a652 Deprecate passing null to non-nullable arg of internal function
This deprecates passing null to non-nullable scale arguments of
internal functions, with the eventual goal of making the behavior
consistent with userland functions, where null is never accepted
for non-nullable arguments.

This change is expected to cause quite a lot of fallout. In most
cases, calling code should be adjusted to avoid passing null. In
some cases, PHP should be adjusted to make some function arguments
nullable. I have already fixed a number of functions before landing
this, but feel free to file a bug if you encounter a function that
doesn't accept null, but probably should. (The rule of thumb for
this to be applicable is that the function must have special behavior
for 0 or "", which is distinct from the natural behavior of the
parameter.)

RFC: https://wiki.php.net/rfc/deprecate_null_to_scalar_internal_arg

Closes GH-6475.
2021-02-11 21:46:13 +01:00

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PHP

--TEST--
Test null arg behavior for special functions
--FILE--
<?php
$null = null;
var_dump(strlen($null));
?>
--EXPECTF--
Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in %s on line %d
int(0)