如何允许php数组中的重复键 [英] How to allow duplicate keys in php array

问题描述

如何让php数组有重复的键?当我尝试插入一个键值对时，它会用新值覆盖对应的先前键的值.有没有办法可以同时维护两个具有不同值的重复键?

How to allow php array to have duplicate keys? When I try to insert a key, value pair with already existing key it overwrites the value of corresponding previous key with the new value. Is there a way that I could maintain both duplicate keys having different values?

推荐答案

您可以拥有一个具有数组值(也称为多维数组)的键，该数组将包含具有该给定键的所有元素.一个例子可能是

You could have a single key that has a value of an array(aka a multi-dimensional array), which would contain all the elements with that given key. An example might be

$countries = array(
  "United States" => array("California", "Texas"),
  "Canada" => array("Ontario", "Quebec")
);

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