{ "uuid": [ { "value": "9fe3fe14-044e-4dfa-bbcc-41dea612f05a" } ], "langcode": [ { "value": "en" } ], "type": [ { "target_id": "daily_email", "target_type": "node_type", "target_uuid": "8bde1f2f-eef9-4f2d-ae9c-96921f8193d7" } ], "revision_timestamp": [ { "value": "2025-05-11T09:00:26+00:00" } ], "revision_uid": [ { "target_type": "user", "target_uuid": "b8966985-d4b2-42a7-a319-2e94ccfbb849" } ], "revision_log": [], "status": [ { "value": true } ], "uid": [ { "target_type": "user", "target_uuid": "b8966985-d4b2-42a7-a319-2e94ccfbb849" } ], "title": [ { "value": "Which PHPStan level should you use?\n" } ], "created": [ { "value": "2023-11-28T00:00:00+00:00" } ], "changed": [ { "value": "2025-05-11T09:00:26+00:00" } ], "promote": [ { "value": false } ], "sticky": [ { "value": false } ], "default_langcode": [ { "value": true } ], "revision_translation_affected": [ { "value": true } ], "path": [ { "alias": "\/daily\/2023\/11\/28\/which-phpstan-level-should-you-use", "langcode": "en" } ], "body": [ { "value": "\n

Which PHPStan level should you use?<\/p>\n\n

PHPStan has different levels.<\/p>\n\n

When you run it on your code, the errors you see will depend on what level you set.<\/p>\n\n

In yesterday's email<\/a>, the first example code block didn't generate an error until level 5 was used.<\/p>\n\n

So, how do you know which level to use?<\/p>\n\n

For greenfield projects<\/h2>\n\n

For new (greenfield) code, install and configure PHPStan before you write any code and have and have it run automatically as part of a CI pipeline.<\/p>\n\n

If you work on a team, speak with the other members and decide how strict you want PHPStan to be.<\/p>\n\n

Read the rule levels and decide which are the most valuable for your team.<\/p>\n\n

If you haven't used PHPStan or static analysis before, maybe start with a lower level.<\/p>\n\n

For me, typehints and return type checking are a must, though I like to use as high a level as possible.<\/p>\n\n

The more information you can provide to PHPStan, the more it will understand your code, give better results and be more likely to find potential bugs or issues.<\/p>\n\n

For brownfield projects<\/h2>\n\n

For existing (brownfield) code, start at the lowest level, which will give you the least number of errors.<\/p>\n\n

Fix any errors, exclude any rules you want to ignore or generate a baseline containing any existing errors.<\/p>\n\n

If you like, increase the level and repeat the process.<\/p>\n\n

Keep increasing the level as long as you feel comfortable, and PHPStan gives you meaningful results.<\/p>\n\n

Again, if you haven't used PHPStan or static analysis before, maybe stick with a lower level.<\/p>\n\n

If you start with a lower level, you can increase it later.<\/p>\n\n ", "format": "full_html", "processed": "\n

Which PHPStan level should you use?<\/p>\n\n

PHPStan has different levels.<\/p>\n\n

When you run it on your code, the errors you see will depend on what level you set.<\/p>\n\n

In yesterday's email<\/a>, the first example code block didn't generate an error until level 5 was used.<\/p>\n\n

So, how do you know which level to use?<\/p>\n\n

For greenfield projects<\/h2>\n\n

For new (greenfield) code, install and configure PHPStan before you write any code and have and have it run automatically as part of a CI pipeline.<\/p>\n\n

If you work on a team, speak with the other members and decide how strict you want PHPStan to be.<\/p>\n\n

Read the rule levels and decide which are the most valuable for your team.<\/p>\n\n

If you haven't used PHPStan or static analysis before, maybe start with a lower level.<\/p>\n\n

For me, typehints and return type checking are a must, though I like to use as high a level as possible.<\/p>\n\n

The more information you can provide to PHPStan, the more it will understand your code, give better results and be more likely to find potential bugs or issues.<\/p>\n\n

For brownfield projects<\/h2>\n\n

For existing (brownfield) code, start at the lowest level, which will give you the least number of errors.<\/p>\n\n

Fix any errors, exclude any rules you want to ignore or generate a baseline containing any existing errors.<\/p>\n\n

If you like, increase the level and repeat the process.<\/p>\n\n

Keep increasing the level as long as you feel comfortable, and PHPStan gives you meaningful results.<\/p>\n\n

Again, if you haven't used PHPStan or static analysis before, maybe stick with a lower level.<\/p>\n\n

If you start with a lower level, you can increase it later.<\/p>\n\n ", "summary": null } ], "feeds_item": [ { "imported": "2025-05-11T09:00:26+00:00", "guid": null, "hash": "6225796a12956da7eebd27198ca6be4b", "target_type": "feeds_feed", "target_uuid": "90c85284-7ca8-4074-9178-97ff8384fe76" } ] }