Continuous Integration (CI)
Integrating static code analysis into CI pipelines automates the process of checking code quality. CI tools can run static analysis scripts as part of the build process, ensuring that every code change undergoes rigorous scrutiny before deployment.
Steps for CI to perform static code analysis
Step 1: The syntax for running static code analysis with PHPStan, for example, involves installing the tool via Composer and creating a configuration file (phpstan.neon):
composer require --dev phpstan/phpstan
touch phpstan.neon
Step 2: Configure phpstan.neon with your desired rulesets and paths to analyze:
includes:
- src
- tests
parameters:
level: max
Step 3: Then, run PHPStan via the command line:
vendor/bin/phpstan analyze
Example: Consider a simple PHP function with a potential type error:
function addNumbers(int $a, int $b) {
return $a + $b;
}
addNumbers(5, '10');
// Type error: Argument 2 must be of type int, string given
Note: Running PHPStan on this code would highlight the type error and suggest corrections.
Output:
Depending on the tool used, the output of static code analysis typically includes:
- Detailed reports on detected issues, categorized by severity.
- Suggestions for fixing issues, such as type mismatches, unused variables, or potential security vulnerabilities.
- Summary statistics indicating the overall code quality and adherence to coding standards.
How to Perform Static Code Analysis in PHP?
Static code analysis is a method of analyzing source code without executing it. It helps identify potential bugs, security vulnerabilities, and code quality issues early in the development process. In PHP, static code analysis tools can be incredibly useful for maintaining clean, efficient, and secure codebases.
These are the following approaches to perform static code analysis in PHP:
Table of Content
- Manual Review
- IDE Tools
- Command-Line Tools
- Continuous Integration (CI)