1.2.1511. ext/ffi

Extension FFI : Foreign Function Interface .

This extension allows the loading of shared libraries (.DLL or .so), calling of C functions and accessing of C data structures in pure PHP, without having to have deep knowledge of the Zend extension API, and without having to learn a third “intermediate” language. The public API is implemented as a single class FFI with several static methods (some of them may be called dynamically), and overloaded object methods, which perform the actual interaction with C data.

<?php
//Example : Calling a function from shared library
// create FFI object, loading libc and exporting function printf()
$ffi = FFI::cdef(
    "int printf(const char *format, ...);", // this is a regular C declaration
    "libc.so.6");
// call C's printf()
$ffi->printf("Hello %s!\n", "world");
?>

See also ext/ffi and A PHP Compiler, aka The FFI Rabbit Hole.

1.2.1511.1. Specs

Short name	Extensions/Extffi
Rulesets	All, Appinfo, CE, Changed Behavior
Exakat since	1.7.9
PHP Version	With PHP 7.4 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Available in	Entreprise Edition, Community Edition, Exakat Cloud