2020-02-16 标签:php,print,函数,使用,总结,实现,代码,如下,garcon,1986,echo,区别,输入,多个,字符串,hello,world,成功

实现代码如下：'; //microtime — Return current Unix timestamp with microseconds $stime2 = microtime(true); echo "hello"."world"; $etime2 = microtime(true); $t