如果当前元素是一个数组,则递归调用searchArrayPointer()函数来搜索子数组中的值。如果找到了匹配的值,则返回当前键名与子数组中匹配值的指针的组合。 然后,我们创建了一个多维数组$multiDimensionalArray,并指定要搜索的值为'subsubvalue2'。接下来,我们调用searchArrayPointer()函数来查找该值在数组中的指针
== false) { return $result; } } else { if ($value == $searchValue) { return $key; } } } return false; } $multidimensionalArray = [ 'key1' => 'value1', 'key2' => [ 'key3' => 'value2', 'key4' => [ 'key5' => 'value3' ] ] ]; $searchValue = 'value3'; $re...
For multidimensional arrays, combine array_search with array_column. multi_array_search.php <?php $users = [ ["id" => 1, "name" => "Alice"], ["id" => 2, "name" => "Bob"], ["id" => 3, "name" => "Charlie"] ]; $key = array_search("Bob", array_column($users, "nam...
使用array_column 和in_array:如果你需要在一个多维数组中查找一个值,可以使用 array_column 函数从数组中提取一个特定列,然后使用 in_array 函数检查该列中的值是否存在。$multiDimensionalArray = array( array('id' => 1, 'name' => 'value1'), array('id' => 2, 'name' => 'value2'), array(...
You might know how to find a value in an array or in a one dimensional array, but the same technique doesn’t work in a multidimensional array. So, you’re looking for the solution. Solution: Example: [php]<?php function multi_array_search($search_for, $search_in) { ...
function deep_in_array($value, $array) { foreach($array as $item) { if(!is_array...
PHP array PHP object PHP NULL value Examples explained PHP Strings Get the length of a string - strlen() Count the number of words in a string - str_word_count() Reverse a string - strrev() Search for a specific text within a string - strpos() ...
if ($key !== array_search($value, $array)) { $isOneDimensional = false; break; } } if ($isOneDimensional) { echo “是一维数组”; } else { echo “不是一维数组”; } “` 以上是三种常用的方法来检查一个变量是否是一维数组。可以根据具体的需求选择合适的方法来判断。
In PHP7+ to find if a value is set in a multidimensional array with a fixed number of dimensions, simply use the Null Coalescing Operator: ?? So for a three dimensional array where you are not sure about any of the keys actually existing ...
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