在静态类中使用另一个文件中的外部数组

Question

I'm currently working on a project where I have to work with huge arrays. With huge, I mean 1k elements or more. Since these are a lot of arrays and i sometimes mess things up, I decided to create a class with static functions so i can call the functions which would make the entire project easier to read. This is what I currently have:

ArrayAccess.class.php:

require "dep/arrays/elements.php";
class ArrayAccess {

    public static function get_value_from_element($element) {
        return $elements[$element];
    }
}

elements.php:

<?php
$elements = array(
    "sam" => 6, ... and so on ...

I simply want to be able to use ArrayAccess::get_value_from_element($element) in my project. It is so much easier to read than all these indexes everywhere. However, the array is defined in the elements.php file - I can't use that in the class.

So how can I access the array in my class? Please note, I cannot copy it into the class, the file would be larger than 400k lines, this is not an option.

Answer 1

You can return a value from an include (or require in this case) and store that to a static property the first time the function is called.

elements.php:

<?php
return array("sam" => 6, ...);

DataAccess.php:

class DataAccess {

    private static $elements = array();

    public static function get_value_from_element($element) {
        if(self::$elements === array()) {
            self::$elements = require "elements.php";
        }
        return self::$elements[$element];
    }
}

You should also avoid naming your class ArrayAccess, since it already exists in PHP.