PHP interview questions: Little miscellaneous fish

The questions here are relatively old, but they are often encountered when doing written examination questions. Because these questions are messy and the knowledge points tested are not easy to classify, they are put together

<span>/*</span><span>*
* 题目:最少代码实现求3个数的最大值
* 三目运算符实现
</span><span>*/</span><span>function</span> getMax(<span>$a</span>,<span>$b</span>,<span>$c</span><span>){
        </span><span>return</span>  (<span>$a</span> > <span>$b</span>) ? ( (<span>$a</span> > <span>$c</span>) ? <span>$a</span> : <span>$c</span> ) : ( (<span>$b</span> > <span>$c</span>) ? <span>$b</span> : <span>$c</span><span> );
}
</span><span>echo</span> getMax(3,9,6)

<span>/*</span><span>*
* 题目:打印前一天的时间  格式:2015年10月15日 11:09:33
* strtotime函数使用 
* strtotime("now")  
* strtotime("-1 day");
* strtotime("+1 day");
* strtotime("+2 days");
* strtotime("+1 week");
* strtotime("+1 month");
* strtotime("+2 hours");
* strtotime("next Monday");
* strtotime("last Monday");
* strtotime("+1 week 3 days 7 hours 5 seconds");
</span><span>*/</span><span>date_default_timezone_set(</span>"PRC"<span>);
</span><span>echo</span><span>date</span>("Y-m-d H:i:s",<span>strtotime</span>("-1 day"));

The above has introduced the PHP interview questions, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.