How to define extension functions in PHP

In PHP, you can define the Extension name through "zend_module_entry" to write the "PHP_FUNCTION" function, which is the extension function.

PHP extension initialization

Initialization extension

$ php /php-src/ext/ext_skel.php --ext

Define extension function

zend_module_entry Define Extension name Write PHP_FUNCTION function

Compile and install

$ phpize $ ./configure $ make && make install

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