Best practice when to use PHP functions instead of custom code?

When to use PHP functions or custom code: Prioritize using PHP functions to handle common tasks, such as string operations, number conversions, or array operations, to improve code readability and maintainability. Write custom code for specific needs, such as custom string parsing or algorithm-intensive operations, for increased flexibility and customizability. Evaluate the performance overhead and, for high-performance tasks, consider using PHP functions or built-in extensions. Keep your code simple and avoid writing unnecessarily complex functions or nested blocks of code. Fully documented code, including comments for PHP functions and custom code, to facilitate maintenance and understanding.

Best practices for when to use PHP functions instead of custom code

In PHP development, we often face a Choice: Write custom code or use ready-made PHP functions? Making the right choices is critical to code readability, maintainability, and efficiency.

Advantages of using PHP functions

• Readability: The names and signatures of PHP functions clearly state their intended use, Make it easier to understand the code.
• Maintainability: PHP functions are generally well tested and documented, simplifying code maintenance and debugging.
• Efficiency: PHP functions are often optimized to perform specific tasks efficiently.

Advantages of using custom code

• Flexibility and customization:Custom code allows you to create an exact Solutions to needs.
• Extensibility: You can extend and modify your custom code as often as you need.
• Full control over your code: You have full control over the internals of your custom code.

Best Practices

In general, the following best practices can guide you in deciding when to use PHP functions or custom code:

• Use PHP functions first: For common tasks such as string manipulation, number conversion, or array manipulation, always use PHP functions first. They provide powerful abstractions and simplified code.
• Use custom code for specific needs: Write custom code when PHP functions don't meet your exact requirements. For example, if you need to perform custom string parsing or create algorithm-intensive operations.
• Consider the performance overhead: Evaluate the performance overhead of custom code. For tasks that require high performance, such as real-time data processing, consider using PHP functions or built-in extensions.
• Keep your code simple: Whether you use PHP functions or custom code, keep your code simple and easy to read. Avoid creating unnecessarily large functions or nested blocks of code.
• Document your code: Always document your code extensively, including comments for PHP functions and any custom code. This is important for other developers and future maintenance.

Practical Case

Suppose you are creating an e-commerce website and need to calculate the total price of the shopping cart. Here is an example using the PHP function (array_sum) and custom code:

// 使用 PHP 函数
$total_price = array_sum($cart['items']);

// 使用自定义代码
$total_price = 0;
foreach ($cart['items'] as $item) {
    $total_price += $item['price'];
}

In most cases, using the array_sum function is preferable because it is more concise , more efficient, and can be easily extended via array_filter to include only specific items. However, if you need to perform more complex calculations or custom logic, using custom code may be a better option.

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