如何检查数组是否在php中包含特定值？

Question

我有一个Array类型的PHP变量，我想找出它是否包含特定值，并让用户知道它在那里。这是我的数组：Array ( [0] => kitchen [1] => bedroom [2] => living_room [3] => dining_room) 我想做些类似的事情：if(Array contains 'kitchen') {echo 'this array contains kitchen';}最好的方法是什么？

Answer 1

使用in_array()功能。

$array = array('kitchen', 'bedroom', 'living_room', 'dining_room');

if (in_array('kitchen', $array)) {

    echo 'this array co

Answer 2

// Once upon a time there was a farmer

// He had multiple haystacks

$haystackOne = range(1, 10);

$haystackTwo = range(11, 20);

$haystackThree = range(21, 30);

// In one of these haystacks he lost a needle

$needle = rand(1, 30);

// He wanted to know in what haystack his needle was

// And so he programmed...

if (in_array($needle, $haystackOne)) {

    echo "The needle is in haystack one";

} elseif (in_array($needle, $haystackTwo)) {

    echo "The needle is in haystack two";

} elseif (in_array($needle, $haystackThree)) {

    echo "The needle is in haystack three";

}

// The farmer now knew where to find his needle

// And he lived happily ever after

Answer 3

见in_array

<?php

    $arr = array(0 => "kitchen", 1 => "bedroom", 2 => "living_room", 3 => "dining_room");    

    if (in_array("kitchen", $arr))

    {

        echo sprintf("'kitchen' is in '%s'", implode(', ', $arr));

    }

?>