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Complex function should be refactored

Reports the functions or methods that are too complex.

Complexity is evaluated based on four metrics:

  • Lines of code — the number of code lines in a function/method (less is better)

  • Maximum Nesting depth — the maximum number of nested statements in a function/method body (less is better)

  • Cyclomatic complexity — the function/method cyclomatic complexity (less is better)

  • Number of variables — the number of variables used in function/method body

Inspection options

Here you can find the description of settings available for the Complex function should be refactored inspection, and the reference of their default values.

Lines of code


Max nesting depth


Cyclomatic complexity


Number of used variables


Inspection Details

By default bundled with:

PhpStorm 2024.1, Qodana for PHP 2024.1,

Can be installed with plugin:

PHP Architecture, 241.SNAPSHOT

Last modified: 29 April 2024