Intermediate LevelPHP 8+
How do PHP 8.0 Named Arguments (func(param: $val)) improve readability and allow skipping optional parameters?
❓ Interview Prompt: Explain PHP 8.0 Named Arguments syntax, skipping default parameter positions, and combining with positional arguments.
Historically, calling a function with many optional parameters required passing positional arguments for every preceding default parameter.
Named Arguments (PHP 8.0+):
Pass arguments by parameter name using the 'paramName: $value' syntax:
1
Self-Documenting Code: Parameter names clarify purpose at call site.
2
Skip Default Parameters: Pass specific optional parameters without supplying dummy values for preceding parameters!
3
Order Independence: Named arguments can be passed in any order.
Code Implementation Example
php
<?php
// Setting cookie using Named Arguments (skipping path, domain, etc.)
setcookie(
name: 'session_token',
value: 'abc123xyz',
expires: time() + 3600,
secure: true,
httponly: true,
samesite: 'Strict'
);💡Using PHP 8.0 Named Arguments to set secure cookies without positional boilerplate.
🎯 Interview Key Takeaway
Named Arguments (func(param: $val)) allow passing parameters by name, improving clarity and allowing skipping default positional arguments.
#Named Arguments#PHP 8.0#Functions#Intermediate
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