1.第一步，下载并安装sm3扩展

wget https://github.com/luzhuqun/php-sm3/archive/master.zip

unzip master.zip

cd master

/usr/local/php/bin/phpize

./configure --with-php-config=/usr/local/php/bin/php-config

make && make install

2.使用方法

<?php

$str = "123456";

$sm3str = sm3($str);

var_dump($sm3str);

?>

输出结果：

string(64) "207cf410532f92a47dee245ce9b11ff71f578ebd763eb3bbea44ebd043d018fb"