Php-webp is a project mainly written in C and PHP, based on the View license.
WebP image read/write functions
This is a standalone PHP extension created using CodeGen_PECL 1.1.3
There are two ways to modify an extension created using CodeGen_PECL:
1) you can modify the generated code as with any other PHP extension
2) you can add custom code to the CodeGen_PECL XML source and re-run pecl-gen
The 2nd approach may look a bit complicated but you have be aware that any manual changes to the generated code will be lost if you ever change the XML specs and re-run PECL-Gen. All changes done before have to be applied to the newly generated code again. Adding code snippets to the XML source itself on the other hand may be a bit more complicated but this way your custom code will always be in the generated code no matter how often you rerun CodeGen_PECL.
To compile your new extension, you will have to execute the following steps:
The extension provides the VisualStudio V6 project file
webp.dsp To compile the extension you open this file using VisualStudio, select the apropriate configuration for your installation (either "Release_TS" or "Debug_TS") and create "php_webp.dll"
After successfull compilation you have to copy the newly created "webp.dll" to the PHP extension directory (default: C:PHPextensions).
You can now load the extension using a php.ini directive
extension="webp.[so|dll]"
or load it at runtime using the dl() function
dl("webp.[so|dll]");
The extension should now be available, you can test this using the extension_loaded() function:
if (extension_loaded("webp")) echo "webp loaded :)"; else echo "something is wrong :(";
The extension will also add its own block to the output of phpinfo();