Home  >  Article  >  Backend Development  >  Extension loading mechanism for PHP functions

Extension loading mechanism for PHP functions

王林
王林Original
2024-04-26 08:24:02936browse

PHP extension loading is loaded directly through the php.ini configuration file or code, respectively: 1. Add the extension=module_name.so line to the php.ini configuration file; 2. Dynamically load using the dl("module_name.so") function Extension.

PHP 函数的扩展加载机制

PHP function extension loading mechanism

PHP extension is a dynamic link library (DLL) used to extend the functions of PHP . It can be loaded in the following two ways:

1. php.ini configuration file

The extension can be loaded in the php.ini configuration file Add the following line to load:

extension=module_name.so

For example, to load the gd extension:

extension=gd.so

2. Directly through code

Extensions can also be loaded through code at runtime:

dl("module_name.so");

For example, to load the imagick extension:

dl("imagick.so");

Practical case

Suppose we want to load the intl extension to handle internationalization. We can do it in the following way:

dl("intl.so");

If the loading is successful, we can verify it by the following code:

var_dump(extension_loaded('intl')); // true

Note:

  • Expanded filenames may vary depending on the platform. For example, use .dll on Windows and .so on Linux.
  • Appropriate permissions are required to load extensions. In a production environment, administrator rights may be required.
  • The path to the extension must be correct. If the path is incorrect, PHP will not be able to load the extension.

The above is the detailed content of Extension loading mechanism for PHP functions. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn