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phan

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phan
Phan is a static analyzer for PHP. Phan prefers to avoid false-positives and attempts to prove incorrectness rather than correctness.

PHP · 5625 stars

Beginner friendly Everything

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Emit different issue types for falsey/truthy non-strict comparisons Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 55/100

phan/phan#5527 · Opened May 1, 2026
Emit different issue types for unused private elements in traits Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

phan/phan#5526 · Opened May 1, 2026
VSCode plugin error Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

phan/phan#5509 · Opened Mar 25, 2026
eliminate config option `override_return_types` Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

phan/phan#5501 · Opened Mar 23, 2026
Incorrect array shape inferrence after conditional assignment Open

difficult

Difficulty 4/5 3-5 days Newbie friendliness 42/100

phan/phan#5422 · 1 comment · Opened Jan 26, 2026
Phan does not understand Closure::bind(). Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

phan/phan#5260 · 1 comment · Opened Oct 31, 2025
Expand 'read_type_annotations' to allow an array of files to enable / block the functionality on and an array of tags to allow/block Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

phan/phan#5248 · Opened Oct 30, 2025
Intellij IDEA Plugin Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

phan/phan#5211 · 2 comments · 2 reactions · Opened Oct 18, 2025
Rewrite all tests to use plain comparisons and show diffs Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

phan/phan#5043 · Opened Aug 11, 2025
VSCode extenstion (TysonAndre.php-phan) Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

phan/phan#5037 · Opened Aug 7, 2025
Warn for PHPDoc `array` types with too many entries Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4980 · 1 comment · Opened Jun 24, 2025
Operations that update the type of one array key affect all keys when the arrays doesn't have type information Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

phan/phan#4926 · Opened May 30, 2025
Use nikic/PHP-Parser as fallback parser Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

phan/phan#4910 · 1 comment · 1 reaction · Opened May 23, 2025
Argument mismatch not detected when array shape is wrong but array can be empty Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

phan/phan#4892 · 3 comments · Opened Dec 8, 2024
Assignment to single field of array makes it the only known field Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

phan/phan#4881 · 1 reaction · Opened Sep 27, 2024
PhanTypeComparisonFromArray for variable tested with is_string() . Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4880 · Opened Sep 6, 2024
Array value types aren't checked for function arguments that might be empty Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

phan/phan#4863 · Opened Jun 27, 2024
Symlink loops prevent finding all files, but phan still exits with a successful exit code Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

phan/phan#4842 · 1 reaction · Opened Mar 5, 2024
Support for GitHub Workflow Commands Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4835 · Opened Feb 2, 2024
Implement Gitlab Issue Printer for CI Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

phan/phan#4800 · Opened Sep 15, 2023
Crash PreferNamespaceUsePlugin\Fixers.php Open

need more info

Difficulty 3/5 1-2 days Newbie friendliness 25/100

phan/phan#4797 · Opened Aug 28, 2023
Trouble communicating with language server Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

phan/phan#4774 · 1 comment · Opened Mar 24, 2023
Symlinks crashes Phan Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

phan/phan#4756 · Opened Jan 12, 2023
Read vendor-dir from composer.json (not a direct duplicate of #1612) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

phan/phan#4744 · Opened Nov 29, 2022
Add config option to warn when a class alias is used Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

phan/phan#4740 · 3 comments · Opened Nov 1, 2022
Question: Is it possible to define where the cache of phan should be saved? Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 25/100

phan/phan#4739 · 3 comments · Opened Oct 21, 2022
Arrays modified when using curl processing functions are assumed empty Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4733 · Opened Oct 2, 2022
Operation on string characters is viewed as conversion to int Open

bug difficult

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4732 · 1 comment · Opened Oct 2, 2022
Look into adding polyfill for directly converting php tokens to `ast\Node` instances in polyfill/fallback Open

enhancement

phan/phan#4726 · 1 assignee · Opened Sep 21, 2022
`$users->count() > 0` does not imply `$users->first()` is non-null: $PhanTypeExpectedObjectPropAccess reported on Laravel collection items Open

question working as intended

Difficulty 4/5 3-5 days Newbie friendliness 45/100

phan/phan#4723 · 4 comments · Opened Sep 20, 2022
Redundant Condition Detection doesn't account for initial 'unset' state from `!isset($this->y)` Open

enhancement redundant condition detection

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4720 · 2 comments · Opened Aug 30, 2022
PhanTypeMismatchDimFetch[Nullable] should be ignored on null coalesced array access Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

phan/phan#4717 · Opened Aug 22, 2022
adding phar's as 3rd party files Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4712 · 2 comments · Opened Aug 17, 2022
Check for inheritance issues when analyzing php 8.2 readonly classes Open

enhancement php8.2

Difficulty 3/5 1-2 days Newbie friendliness 45/100

phan/phan#4696 · Opened Aug 8, 2022
Support php 8.2 https://wiki.php.net/rfc/iterator_xyz_accept_array accepting array Open

enhancement php8.2

Difficulty 3/5 1-2 days Newbie friendliness 35/100

phan/phan#4693 · Opened Aug 7, 2022
Warn about `"${}"` string interpolation being deprecated in php 8.2 Open

enhancement php8.2

phan/phan#4691 · 1 comment · 1 assignee · Opened Aug 5, 2022
PhanPossiblyUndeclaredVariable if var is set and used conditionally Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

phan/phan#4682 · 1 comment · Opened Jun 9, 2022
Question: does phan benefit from PHP's JIT? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

phan/phan#4681 · 1 comment · Opened May 20, 2022
Infer non-empty-list for array variable after use of reset() in condition Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

phan/phan#4677 · 1 comment · Opened Mar 31, 2022
Detect more non-empty-list<> types as return type for functions with @return string[] Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4676 · Opened Mar 31, 2022
Language server: autocomplete support for array shape Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

phan/phan#4674 · Opened Mar 23, 2022
Support "Undefined Variable Error Promotion" RFC Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4672 · Opened Mar 15, 2022
Global variables are handled inconsistently when in the global scope vs when using `global` vs in closures with `use` Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

phan/phan#4670 · 1 comment · Opened Mar 13, 2022
PhanUnusedPublicMethodParameter for unused parameters in overridden methods Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

phan/phan#4664 · 1 comment · Opened Feb 12, 2022
Extending UnitEnum is not allowed Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

phan/phan#4657 · Opened Feb 3, 2022
`PhanUndeclaredGlobalVariable` is sensitive to filenames (files order in folder) and doesn't respect included files Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4651 · 1 comment · Opened Jan 20, 2022
Inferred changes to $this fields aren't updated after function calls Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

phan/phan#4628 · 1 comment · Opened Dec 7, 2021
Circular references prevent detection of unused variable in loop Open

dead code detection enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

phan/phan#4627 · 1 comment · Opened Dec 2, 2021
Don't warn about built-in attributes introduced in future php versions Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

phan/phan#4624 · Opened Nov 28, 2021
Plugin idea: Warn about non-ascii non-comment tokens in source code (for projects that only expect to use ascii) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

phan/phan#4620 · Opened Nov 17, 2021

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