我如何检查数组是否包含特定的值在PHP？

我有一个types数组的PHPvariables，我想知道它是否包含一个特定的值，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) 

我想要做一些事情：

 if(Array contains 'kitchen') {echo 'this array contains kitchen';} 

什么是最好的办法做到以上几点？

Answer 1

使用in_array()函数 。

 $array = array('kitchen', 'bedroom', 'living_room', 'dining_room'); if (in_array('kitchen', $array)) { echo 'this array contains kitchen'; } 

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

请参阅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)); } ?> 

Answer 4

您需要在arrays上使用searchalgorithm。 这取决于你的arrays有多大，你有很多select使用什么。 或者你可以使用内build的function：

http://www.w3schools.com/php/php_ref_array.asp

http://php.net/manual/en/function.array-search.php

Answer 5

从http://php.net/manual/en/function.in-array.php

bool in_array ( mixed $needle , array $haystack [, bool $strict = FALSE ] )

除非严格设定，否则使用松散比较search大海捞针。

Answer 6

 if (in_array('kitchen', $rooms) ... 

Answer 7

使用dynamicvariables在数组中search

  /* https://ideone.com/Pfb0Ou */ $array = array('kitchen', 'bedroom', 'living_room', 'dining_room'); /* variable search */ $search = 'living_room'; if (in_array($search, $array)) { echo "this array contains $search"; } else echo "this array NOT contains $search";