php - 二维数组合并成三维数组
本文介绍了php - 二维数组合并成三维数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
问 题
[["id"=>1,"name"=>"mi5","pp"=>"xiaomi"],
["id"=>2,"name"=>"ip5","pp"=>"apple"],
["id"=>3,"name"=>"ip6","pp"=>"xiaomi"],
["id"=>4,"name"=>"ip6","pp"=>"apple"]
];
以二维数组中的name 和 pp 相同的值分组
结果是:
[["id"=>1,"name"=>"mi5","pp"=>"xiaomi"],
["id"=>2,"name"=>"ip5","pp"=>"apple"],
[["id"=>3,"name"=>"ip6","pp"=>"apple"],
["id"=>4,"name"=>"ip6","pp"=>"apple"]]
];
相同name和pp被分到三维数组中,这是一个例子,实际分类的条件有四个,而且每个的值都很长。求解,目前只能想到两层遍历。
解决方案
<?php
$array = [
["id"=>1,"name"=>"mi5","pp"=>"xiaomi"],
["id"=>2,"name"=>"ip5","pp"=>"apple"],
["id"=>3,"name"=>"ip6","pp"=>"apple"],
["id"=>3,"name"=>"ip6","pp"=>"ip"],
["id"=>4,"name"=>"ip6","pp"=>"apple"]
];
/*
[
["id"=>1,"name"=>"mi5","pp"=>"xiaomi"],
["id"=>2,"name"=>"ip5","pp"=>"apple"],
[
["id"=>3,"name"=>"ip6","pp"=>"apple"],
["id"=>4,"name"=>"ip6","pp"=>"apple"]
]
];
*/
$container = [];
array_map(function( $val ) use ( &$container ) {
$container[ $val['name'].$val['pp'] ][] = $val;
}, $array);
var_dump(array_values($container));
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