PHP 将重复值合并到多维数组中

要将重复值合并到PHP中的多维数组中，代码如下-

示例

<?php $my_arr = array( array(Age=>23, name=>Joe, hobby=>Cycling), array(Age=>26, name=>Hannah, hobby=>Rowing), array(Age=>30, name=>Dev, hobby=>Cycling), array(Age=>30, name=>Dev, hobby=>Cycling) ); foreach($my_arr as $entry => $vals) { $new_vals[$vals[hobby]][]=$vals; } echo "唯一的数组元素是 "; print_r($new_vals); ?>

输出结果

唯一的数组元素是 Array ( [Cycling] => Array ( [0] => Array ( [Age] => 23 [name] => Joe [hobby] => Cycling ) [1] => Array ( [Age] => 30 [name] => Dev [hobby] => Cycling ) [2] => Array ( [Age] => 30 [name] => Dev [hobby] => Cycling ) ) [Rowing] => Array ( [0] => Array ( [Age] => 26 [name] => Hannah [hobby] => Rowing ) ) )

定义了一组值，这些值将age，name和hobby映射到某些值。“foreach”循环用于遍历数组值，并将新值分配给数组中的一项。以前重复的值现在将合并到一个条目中，从而避免存储重复的值。