functionrecursiveSearch($array,$searchValue){foreach($arrayas$key=>$value) {if(is_array($value)) {$result=recursiveSearch($value,$searchValue);if($result!==false) {return$result; } }else{if($value==$searchValue) {return$key; } } }returnfalse; }$multidimensionalArray= ['key1'=>'val...
使用array_column 和in_array:如果你需要在一个多维数组中查找一个值,可以使用 array_column 函数从数组中提取一个特定列,然后使用 in_array 函数检查该列中的值是否存在。$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, $search_in) { foreach ($sear...
array_multisort— 对多个数组或多维数组进行排序说明 ¶ array_multisort( array &$array1, mixed $array1_sort_order = SORT_ASC, mixed $array1_sort_flags = SORT_REGULAR, mixed ...$rest): bool array_multisort() 可以用来一次对多个数组进行排序,或者根据某一维或多维对多维数组进行排序。 关联(...
== false) { echo 'value is in multidim array'; } else { echo 'value is not in multidim array'; } 这个想法在 PHP 手册中 array_search() 的注释部分; 原文由 user559533 发布,翻译遵循 CC BY-SA 3.0 许可协议 有用 回复 查看全部 2 个回答...
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<?php// instead of:$exists = array_key_exists(...
if ($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。
Output elements from a multidimensional arrayLoop through a multidimensional array Multidimensional Arrays explained PHP Sorting Arrays sort() - Sort array in ascending alphabetical ordersort() - Sort array in ascending numerical orderrsort() - Sort array in descending alphabetical orderrsort() - Sort...
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Extract keys from a multidimensional array structure. multidimensional_array.php <?php $users = [ 'user1' => ['name' => 'Alice', 'age' => 25], 'user2' => ['name' => 'Bob', 'age' => 30], 'user3' => ['name' => 'Charlie', 'age' => 35] ]; $userKeys = array_...