PHP function best practices include: CamelCase function names, indicating verbs of action. Concise parameter signatures, considering type hints and optional parameter placement. Always returns an unambiguous value or null, using the appropriate type. Handle errors using exceptions, recording thrown exceptions in a signature. Avoid side effects and if side effects are required, state this clearly in the documentation.
Best Practices for PHP Functions
PHP functions are powerful tools for code reuse and organization. Following best practices ensures that your functions are efficient, maintainable, and easy to use.
1. Naming convention
calculateSum()
or createDocument()
. 2. Parameter signature
3. Return value
int
, string
, or bool
. 4. Error handling
0
. 5. Side Effects
Practical case: Calculating prime numbers
<?php function isPrime(int $number): bool { if ($number <= 1) { return false; } for ($i = 2; $i * $i <= $number; $i++) { if ($number % $i == 0) { return false; } } return true; }
Advantages:
isPrime()
The function name clearly indicates what it does. $number
The parameter is type-hinted as int
. true
or false
indicating whether the given number is prime. The above is the detailed content of Best Practices for PHP Functions. For more information, please follow other related articles on the PHP Chinese website!