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。
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