在 PHP 中将重复值合并到多维数组中
phpserver side programmingprogramming更新于 2025/7/28 9:22:17
在 PHP 中将重复值合并到多维数组中，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']][]=$vals;
}
echo "The unique array elements are ";
print_r($new_vals);
?>
输出
The unique array elements are 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 ) ) )
定义了一个数组，将年龄、姓名和爱好映射到特定的值。使用"foreach"循环遍历数组值，并将新值赋给数组中的某个条目。之前重复的值现在将合并为单个条目，从而避免存储重复的值。
