README

This package is no longer needed as the feature is now available in PHP-CS-Fixer. Use the native_function_invocation fixer with the @compiler_optimized option.

Optimize Native Functions Fixer

About

This custom PHP-CS-Fixer fixer prefixes native PHP functions which can be replaced with opcodes by the OPcache.

class MyClass
{
    public function isArray($var): bool
    {
        return \is_array($var);
    }
}

See this pull request to learn how prefixing an optimizable PHP function made the Symfony DI container 783ms faster. And see this pull request if you want to learn more about how the optimization works.

Installation

Add the package via Composer:

php composer.phar require leofeyer/optimize-native-functions-fixer --dev

Configuration

Modify your .php_cs or .php_cs.dist file as follows:

return PhpCsFixer\Config::create()
    ->setRules([
        // …
        'LeoFeyer/optimize_native_functions' => true,
    ])
    ->registerCustomFixers([
        new LeoFeyer\PhpCsFixer\OptimizeNativeFunctionsFixer()
    ])
    ->setRiskyAllowed(true)

Other options

If you do not like prefixing native functions, you can also import them with a use statement (PHP 7 only).

use function is_array;

class MyClass
{
    public function isArray($var): bool
    {
        return is_array($var);
    }
}