In this PHP tutorial, you shall learn about Two-dimensional Arrays, how to created 2D arrays, access elements of 2D arrays, and traverse the inner arrays of a 2D array, with example programs. Multi-dimensional
array_column()返回input数组中键值为column_key的列, 如果指定了可选参数index_key,那么input数组中的这一列的值将作为返回数组中对应值的键。 参数 input 需要取出数组列的多维数组(或结果集) column_key 需要返回值的列,它可以是索引数组的列索引,或者是关联数组的列的键。 也可以是NULL,此时将返回整个数组(...
Now the two-dimensional $cars array contains four arrays, and it has two indices: row and column.To get access to the elements of the $cars array we must point to the two indices (row and column):Example <?phpecho $cars[0][0].": In stock: ".$cars[0][1].", sold: ".$cars...
// Using the $records array from Example #1 $last_names = array_column($records, 'last_name', 'id'); print_r($last_names); ?> 以上例程会输出: Array ( [2135] => Doe [3245] => Smith [5342] => Jones [5623] => Doe ) 原文:http://php.net/manual/zh/function.array-column.php...
Example #2 Sorting multi-dimensional array <?php$ar = array( array("10", 11, 100, 100, "a"), array( 1, 2, "2", 3, 1) );array_multisort($ar[0], SORT_ASC, SORT_STRING, $ar[1], SORT_NUMERIC, SORT_DESC);var_dump($ar);?> In this example, after sorting, the first arr...
The array_multisort of Array for PHP sorts multiple or multi-dimensional arrays. Syntax array_multisort( array &$array1, mixed $array1_sort_order = SORT_ASC, mixed $array1_sort_flags = SORT_REGULAR, mixed ...$rest ): bool Parameters array1 ...
To loop through a multi-dimensional array, you need one loop for each of the array's dimensions. The following example outputs all elements in thelettersarray: Example string letters[2][4] = { {"A","B","C","D"}, {"E","F","G","H"} ...
array(4) { [0]=> int(4) [1]=> int(1) [2]=> int(2) [3]=> int(3) } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Example #2 Sorting multi-dimensional array <?php $ar = array( array("10", 11, 100, 100, "a"), ...
Discover the power of PHP's array_multisort() function as we explore its versatility, performance, and various use cases in this ultimate sorting tool.
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