Sort multidimensional arrays by a specific key withusort. sort_multi.php <?php declare(strict_types=1); $users = [ ["name" => "John", "age" => 25], ["name" => "Jane", "age" => 30], ["name" => "Bob", "age" => 20] ]; usort($users, fn(array $a, array $b): in...
function sortMultidimensionalArrayByValue(&$array, $column, $order = SORT_ASC) { $sortColumn = array(); foreach ($array as $key => $row) { $sortColumn[$key] = $row[$column]; } array_multisort($sortColumn, $order, $array);} // 示例多维数组$students = array( array(‘name’ =...
array_push() - 向数组末尾添加一个或多个元素 array_pop() - 删除数组的最后一个元素 array_merge() - 合并一个或多个数组 in_array() - 检查数组中是否存在某个值 array_keys() - 返回数组中所有的键名 array_values() - 返回数组中所有的值 sort() - 对数组升序排序 rsort() - 对数组降序排序 ...
$edition[$key] = $row['edition'];}// 你可以使用 array_column() 代替上面的代码$volume = array_column($data, 'volume');$edition = array_column($data, 'edition');// 将数据根据 volume 降序排列,根据 edition 升序排列// 把 $data 作为最后一个参数,以通用键排序array_multisort($volume, ...
returnstrcasecmp($x['key2'],$y['key2']);// strcmp区分大小写 strcasecmp不区分大小写 } usort($a,'string_sort'); echo'针对key2按字母排序'; var_dump($a); // create the array. // Array structs // StudentId = > ["name" => "Name", "grade" => xx.x]; ...
Simple function to sort an array by a specific key. Maintains index association.<?phpfunction array_sort($array, $on, $order=SORT_ASC){$new_array = array(); $sortable_array = array(); if (count($array) > 0) { foreach ($array as $k => $v...
Discover the power of PHP's array_multisort() function as we explore its versatility, performance, and various use cases in this ultimate sorting tool.
// Sort associative array by key ksort($fruits); print_r($fruits); In this program, thesortfunction sorts the$numbersarray in ascending order, whilersortsorts it in descending order. Theasortfunction sorts the$fruitsarray by value, andksortsorts it by key. ...
* This method should return an array of field names or field definitions. * If the former, the field name will be treated as an object property name whose value will be used * as the field value. If the latter, the array key should be the field name while the array value should be...
functionuniqueByCallback(array$array,callable$callback):array{$unique= [];$keys= [];foreach($arrayas$key=>$item) {$comparisonKey=$callback($item);if(!isset($keys[$comparisonKey])) {$keys[$comparisonKey] =true;$unique[$key] =$item; ...