PHP interview questions: little miscellaneous fish, php interview questions_PHP tutorial

Little miscellaneous PHP interview questions, PHP interview questions

The questions here are relatively old, but they are often encountered when doing written examination questions, because these questions are relatively messy, It’s hard to classify the knowledge points in the test, so I’ll just put them 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"));

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