比较PHP中的多个值 [英] Compare multiple values in PHP

问题描述

我想从这里出发:

if($var == 3 || $var == 4 || $var == 5 || $var =='string' || $var == '2010-05-16') {
   // execute code here
}

对此:

if($var == (3, 4, 5, 'string', '2010-05-16')) { // execute code here }

继续输入$var似乎很多余，而且我发现阅读起来有点麻烦. PHP中有没有办法以这种方式简化它?我在这里读到一篇文章，当您使用XQuery时，可以像在$var = (1,2,3,4,5)等中那样使用=运算符.

Seems very redundant to keep typing $var, and I find that it makes it a bit cumbersome to read. Is there a way in PHP to do simplify it in this way? I read on a post here that when using XQuery you can use the = operator as in $var = (1,2,3,4,5) etc.

推荐答案

将值放在数组中，然后使用in_array()函数检查它们是否存在.

Place the values in an array, then use the function in_array() to check if they exist.

$checkVars = array(3, 4, 5, "string", "2010-05-16");
if(in_array($var, $checkVars)){
    // Value is found.
}

http://uk.php.net/manual/zh/function.in-array.php

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