PHP 函数性能优化工具的使用和实践

# CentOS/RHEL
yum install zephir

# Ubuntu/Debian
apt-get install zephir

zephir create my_extension

namespace MyExtension;

class MyFunction
{
    public static function sum($a, $b)
    {
        return $a + $b;
    }
}

zephir compile my_extension.zep

# 在 php.ini 中加入
extension=my_extension.so

<?php
include 'vendor/autoload.php';

use MyExtension\MyFunction;

$result = MyFunction::sum(1, 2);
echo $result; // 3

function fibonacci($n)
{
    if ($n <= 1)
        return 1;

    return fibonacci($n - 1) + fibonacci($n - 2);
}

namespace MyExtension;

class Fibonacci
{
    public static function calculate($n)
    {
        if ($n <= 1)
            return 1;

        $arr = [];
        $arr[0] = 0;
        $arr[1] = 1;

        for ($i = 2; $i <= $n; $i++) {
            $arr[$i] = $arr[$i - 1] + $arr[$i - 2];
        }

        return $arr[$n];
    }
}

# PHP 原生版本
time: 0.497298s
memory: 420.23 KB

# Zephir 版本
time: 0.002496s
memory: 32.76 KB