Considers variable as null when failing in_array

[eigan]

Bug report

Code snippet that reproduces the problem

https://phpstan.org/r/73c7b029-ffbf-4b15-b6fe-19a5f6ee43d5

Note that removing the last argument to is_array() will give the expected output.

Expected output

Should be no error.

[eigan]

Some more related cases: https://phpstan.org/r/58821a86-a033-4c9f-a36d-609a34bd9d3b

[phpstan-bot]

@eigan PHPStan now reports different result with your code snippet:

@@ @@
+PHP 8.0 (2 errors)
+==========
+
+14: If condition is always false.
+14: Only booleans are allowed in an if condition, null given.
+
+PHP 7.1 – 7.4 (1 error)
+==========
+
 14: If condition is always false.

Full report

PHP 8.0 (2 errors)

Line	Error
14	If condition is always false.
14	If condition is always false.

PHP 7.1 – 7.4 (1 error)

Line	Error
14	Only booleans are allowed in an if condition, null given.

[VincentLanglet]

Removing the === true solve the issue
https://phpstan.org/r/f67f8043-f085-43ef-9672-7529c7c9a7e2

I'll try to understand what this mean.

[github-actions]

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