Extension loading mechanism for PHP functions

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 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.

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