DrevOps PHP_CodeSniffer Standard

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PHP_CodeSniffer standard enforcing:

• Consistent naming conventions for local variables and function/method parameters (configurable: snakeCase or camelCase)
• PHPUnit data provider naming conventions and organization

Installation

composer require --dev drevops/phpcs-standard

The standard is automatically registered via phpcodesniffer-composer-installer.

Verify: vendor/bin/phpcs -i (should list DrevOps)

Usage

# Check code
vendor/bin/phpcs --standard=DrevOps path/to/code

# Auto-fix
vendor/bin/phpcbf --standard=DrevOps path/to/code

Configuration

Create phpcs.xml:

<?xml version="1.0"?>
<ruleset name="Project Standards">
  <rule ref="DrevOps"/>
  <file>src</file>
  <file>tests</file>
</ruleset>

Use individual sniffs:

<ruleset name="Custom Standards">
  <!-- Naming Conventions -->
  <rule ref="DrevOps.NamingConventions.LocalVariableNaming"/>
  <rule ref="DrevOps.NamingConventions.ParameterNaming"/>

  <!-- Testing Practices -->
  <rule ref="DrevOps.TestingPractices.DataProviderPrefix"/>
  <rule ref="DrevOps.TestingPractices.DataProviderMatchesTestName"/>
  <rule ref="DrevOps.TestingPractices.DataProviderOrder"/>
</ruleset>

Configure naming convention

By default, both sniffs enforce snakeCase. Configure to use camelCase:

<ruleset name="Custom Standards">
  <rule ref="DrevOps.NamingConventions.LocalVariableNaming">
    <properties>
      <property name="format" value="camelCase"/>
    </properties>
  </rule>

  <rule ref="DrevOps.NamingConventions.ParameterNaming">
    <properties>
      <property name="format" value="camelCase"/>
    </properties>
  </rule>
</ruleset>

LocalVariableNaming

Enforces consistent naming convention for local variables inside functions/methods.

With snakeCase (default):

function processOrder() {
    $order_id = 1;        // ✓ Valid
    $orderId = 1;         // ✗ Error: NotSnakeCase
}

With camelCase:

function processOrder() {
    $orderId = 1;         // ✓ Valid
    $order_id = 1;        // ✗ Error: NotCamelCase
}

Excludes:

• Function/method parameters (handled by ParameterNaming)
• Class properties (not enforced)
• Reserved variables ($this, $_GET, $_POST, etc.)

Error codes

• DrevOps.NamingConventions.LocalVariableNaming.NotSnakeCase (when format="snakeCase")
• DrevOps.NamingConventions.LocalVariableNaming.NotCamelCase (when format="camelCase")

Ignore

// phpcs:ignore DrevOps.NamingConventions.LocalVariableNaming.NotSnakeCase
$myVariable = 'value';

ParameterNaming

Enforces consistent naming convention for function/method parameters.

With snakeCase (default):

function processOrder($order_id, $user_data) {  // ✓ Valid
function processOrder($orderId, $userData) {    // ✗ Error: NotSnakeCase

With camelCase:

function processOrder($orderId, $userData) {    // ✓ Valid
function processOrder($order_id, $user_data) {  // ✗ Error: NotCamelCase

Excludes:

• Parameters inherited from interfaces/parent classes
• Parameters in interface/abstract method declarations
• Class properties (including promoted constructor properties)

Error codes

• DrevOps.NamingConventions.ParameterNaming.NotSnakeCase (when format="snakeCase")
• DrevOps.NamingConventions.ParameterNaming.NotCamelCase (when format="camelCase")

Ignore

// phpcs:ignore DrevOps.NamingConventions.ParameterNaming.NotSnakeCase
function process($legacyParam) {}

DataProviderPrefix

Enforces consistent naming prefix for PHPUnit data provider methods.

class MyTest extends TestCase {
    /**
     * @dataProvider dataProviderUserLogin
     */
    public function testUserLogin($data) {}

    public function dataProviderUserLogin() {  // ✓ Valid
        return [];
    }

    public function providerUserLogin() {      // ✗ Error: InvalidPrefix
        return [];
    }
}

Configuration

Customize the required prefix:

<rule ref="DrevOps.TestingPractices.DataProviderPrefix">
    <properties>
        <property name="prefix" value="dataProvider"/>
    </properties>
</rule>

Error code

DrevOps.TestingPractices.DataProviderPrefix.InvalidPrefix

Ignore

// phpcs:ignore DrevOps.TestingPractices.DataProviderPrefix.InvalidPrefix
public function providerCustom() {}

Auto-fixing

This sniff supports auto-fixing with phpcbf:

• Renames provider methods to use the correct prefix
• Updates all @dataProvider annotations to reference the new name

DataProviderMatchesTestName

Ensures data provider method names match their test method names.

class MyTest extends TestCase {
    /**
     * @dataProvider dataProviderUserLogin
     */
    public function testUserLogin($data) {}

    public function dataProviderUserLogin() {  // ✓ Valid - ends with "UserLogin"
        return [];
    }

    public function dataProviderLogin() {      // ✗ Error: InvalidProviderName
        return [];                              //   Expected: ends with "UserLogin"
    }
}

Supported formats:

• @dataProvider annotations
• #[DataProvider('methodName')] attributes (PHP 8+)

Excludes:

• External providers (ClassName::methodName)
• Non-test methods
• Non-test classes

Error code

DrevOps.TestingPractices.DataProviderMatchesTestName.InvalidProviderName

Ignore

// phpcs:ignore DrevOps.TestingPractices.DataProviderMatchesTestName.InvalidProviderName
public function dataProviderCustomName() {}

DataProviderOrder

Enforces structural organization of test and data provider methods.

class MyTest extends TestCase {
    // ✓ Valid - provider after test (default)
    /**
     * @dataProvider dataProviderUserLogin
     */
    public function testUserLogin($data) {}

    public function dataProviderUserLogin() {
        return [];
    }
}

Helper methods between tests and providers are allowed:

class MyTest extends TestCase {
    /**
     * @dataProvider dataProviderUserLogin
     */
    public function testUserLogin($data) {}

    private function helperMethod() {}  // ✓ Allowed

    public function dataProviderUserLogin() {
        return [];
    }
}

Configuration

Reverse the ordering (provider before test):

<rule ref="DrevOps.TestingPractices.DataProviderOrder">
    <properties>
        <property name="providerPosition" value="before"/>
    </properties>
</rule>

Options:

• after (default) - Providers must appear after their test methods
• before - Providers must appear before their test methods

Error codes

• DrevOps.TestingPractices.DataProviderOrder.ProviderBeforeTest - Provider appears before test (when providerPosition="after")
• DrevOps.TestingPractices.DataProviderOrder.ProviderAfterTest - Provider appears after test (when providerPosition="before")

Ignore

// phpcs:ignore DrevOps.TestingPractices.DataProviderOrder.ProviderBeforeTest
public function dataProviderUserLogin() {}

Development

composer install       # Install dependencies
composer test          # Run tests
composer test-coverage # Run tests with coverage
composer lint          # Check code standards
composer lint-fix      # Fix code standards

License

GPL-3.0-or-later

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