Name indicates clear purpose

Names should clearly indicate their purpose, type, and behavior. This applies to methods, variables, and parameters. Choose names that are self-documenting and unambiguous.

Key guidelines:

• Use prefixes for boolean methods (is, has, can)
• Use accurate type indicators (integer vs number)
• Choose domain-specific terms (digits vs length for numbers)
• Avoid abbreviated or ambiguous names

Example:

// Unclear naming
public function pan($value) { }
public function num($len = 6) { }

// Clear naming
public function formatPanNumber($value) { }
public function generateRandomInteger(int $digits = 6) { }

// Boolean method naming
public function arrayable($value) { }     // Unclear purpose
public function isArrayable($value) { }   // Clear purpose

This standard helps prevent confusion, makes code self-documenting, and maintains consistency across the codebase.