Implementing Continuous Integration for PHP

Continuous integration automatically builds and checks PHP projects after code changes.

What It Does

Continuous integration automatically builds and checks PHP projects after code changes. The following examples distinguish a normal use case, a boundary case and a practical application.

Requirements and Compatibility

PHP 8.x and a local test environment. Apply input validation, correct error handling and the requirements of any optional libraries.

The code focuses on the core concept. Production implementation may also need routes, validation, persistence, authorization or deployment tooling.

Example 1: Basic Behavior

Resolve and install the locked dependencies in a clean build.

composer validate --strict
composer install --no-interaction --prefer-dist

This is a command-line example; use it in its appropriate file or shell, not in the PHP source editor.

Example 2: Another Case

Run tests and dependency auditing as separate CI gates.

vendor/bin/phpunit --colors=never
composer audit --locked

This is a command-line example; use it in its appropriate file or shell, not in the PHP source editor.

Practical Example: Putting It to Use

A deterministic isolated example avoids infrastructure dependencies in unit tests.

<?php
function quantityTotal(int $unit, int $qty): int { return $unit * $qty; }
if (quantityTotal(18, 3) !== 54) throw new RuntimeException("Failed");
echo "PASS";

Important Behavior and Edge Cases

Require tests and vulnerability checks before deployment and use ephemeral credentials.

Comparison with Related Functions or Approaches

Common Beginner Mistakes

Key Takeaways

• Continuous integration automatically builds and checks PHP projects after code changes.
• Require tests and vulnerability checks before deployment and use ephemeral credentials.
• Use dedicated CI workflows for lint, unit tests and dependency review.

Before adapting these examples, verify the return values, test the failure paths and confirm that your application meets its security and environment requirements.