A comprehensive comparison of the functions of PHP 7.2 and 5, which one is more suitable for you?

PHP is a popular server-side scripting language, and its different versions have been constantly updated and improved. When choosing which version to use, many developers will consider the functionality and performance of each version. This article will compare PHP 7.2 and PHP 5 in terms of functionality and performance, and discuss which version is more suitable for specific usage scenarios.

1. Function comparison

PHP 5: PHP 5 was released in 2004 and is an important version of PHP. Before the release of PHP 5, PHP was mainly used for web development, and later gradually developed into a mature object-oriented programming language. In terms of functionality, PHP 5 introduces some important features, such as namespaces, static methods, abstract classes, etc. But compared with PHP 7, PHP 5 has some shortcomings in performance and security.

PHP 7.2: PHP 7.2 is an important version of the PHP 7 series, released in 2017. Compared with PHP 5, the PHP 7 series has greatly improved performance and security. PHP 7 introduces new features, such as return type declarations, scalar type declarations, anonymous classes, etc., making the code more standardized and readable. PHP 7.2 also enhances the password hashing algorithm and adds some new functions and features.

Specific code examples:

The following will demonstrate the difference between using return type declarations in PHP 5 and PHP 7.2:

PHP 5 Code Example:

<?php 
    function sum($a, $b) {
        return $a + $b;
    }

    echo sum(5, 3); // 输出 8
?>

PHP 7.2 Code Example:

<?php
    function sum(int $a, int $b): int {
        return $a + $b;
    }

    echo sum(5, 3); // 输出 8
?>

As can be seen from the above code example, in PHP 7.2 we can use return type declaration To specify the return type of the function, this can make the code clearer and more standardized.

2. Performance comparison

PHP 7 series has significantly improved performance compared to PHP 5. According to official data, PHP 7 can reduce memory consumption by about 50% compared to PHP 5, and improves execution speed by 2 times in many scenarios. This is a significant improvement for large websites and applications.

3. Which one is more suitable for you?

When choosing whether to use PHP 7.2 or PHP 5, you need to consider the specific project needs and actual conditions. If your project is already running well on PHP 5 and there is no need to upgrade, you can continue to use PHP 5. But if you are starting a new project or need to improve the performance and security of an existing project, it is recommended to choose PHP 7.2.

Summary:

In summary, PHP 7.2 has significantly improved functionality and performance compared to PHP 5, especially in terms of performance. To be obvious. Therefore, if you want to have a faster and more secure PHP development experience, it is recommended to choose PHP 7.2 version. Of course, when choosing which version to use, it's most important to base your decision on your specific project needs.

The above is the detailed content of A comprehensive comparison of the functions of PHP 7.2 and 5, which one is more suitable for you?. For more information, please follow other related articles on the PHP Chinese website!