如何将数组存储在文件中以便稍后使用 PHP 作为数组访问？

How do I store an array in a file to access as an array later with PHP?

提问by Haroldo

I just want to quickly store an array which I get from a remote API, so that i can mess around with it on a local host.

我只想快速存储从远程 API 获取的数组，以便我可以在本地主机上处理它。

So:

所以：

1. I currently have an array.
2. I want to people to use the array without having to get it from the API.

1. 我目前有一个数组。
2. 我想让人们使用该数组而不必从 API 中获取它。

There are no needs for efficiency etc here, this isnt for an actual site just for getting some sanitizing/formatting methods made etc

这里不需要效率等，这不是为了获得一些消毒/格式化方法等的实际站点

Is there a function like store_array()or restore_arrray()?!

有没有类似store_array()或的功能restore_arrray()？！

回答by retro

The best way to do this is JSON serializing. It is human readable and you'll get better performance (file is smaller and faster to load/save). The code is very easy. Just two functions

最好的方法是 JSON 序列化。它是人类可读的，您将获得更好的性能（文件更小，加载/保存速度更快）。代码非常简单。只有两个功能

• json_encode
• json_decode

• json_encode
• json_decode

Example code:

示例代码：

$arr1 = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5);
file_put_contents("array.json",json_encode($arr1));
# array.json => {"a":1,"b":2,"c":3,"d":4,"e":5}
$arr2 = json_decode(file_get_contents('array.json'), true);
$arr1 === $arr2 # => true

You can write your own store_array and restore_array functions easily with this example.

您可以使用此示例轻松编写自己的 store_array 和 restore_array 函数。

For speed comparison see benchmarkoriginally from Preferred method to store PHP arrays (json_encode vs serialize).

有关速度比较，请参阅最初来自Preferred method to store PHP array (json_encode vs serialize) 的基准测试。

回答by soulmerge

If you don't need the dump file to be human-readable, you can just serialize()the array.

如果您不需要转储文件是人类可读的，您可以只serialize()使用数组。

storing:

存储：

file_put_contents('yourfile.bin', serialize($array));

retrieving:

检索：

$array = unserialize(file_get_contents('yourfile.bin'));

回答by K. Norbert

Use serializeand unserialize

使用序列化和反序列化

// storing
$file = '/tmp/out.data';
file_put_contents($file, serialize($mydata)); // $mydata is the response from your remote API

// retreiving
$var = unserialize(file_get_contents($file));

Or another, hacky way:

或者另一种黑客方式：

var_export()does exactly what you want, it will take any kind of variable, and store it in a representation that the PHP parser can read back. You can combine it with file_put_contentsto store it on disk, and use file_get_contentsand evalto read it back.

var_export()完全符合您的要求，它将接受任何类型的变量，并将其存储在 PHP 解析器可以读回的表示中。您可以将其与file_put_contents组合以将其存储在磁盘上，并使用file_get_contents和eval将其读回。

// storing
$file = '/tmp/out.php';
file_put_contents($file, var_export($var, true));

// retrieving
eval('$myvar = ' . file_get_contents($file) . ';');

回答by MTK

Another fast way not mentioned here:

此处未提及的另一种快速方法：

That way add header with <?phpstart tag, name of variable \$my_array =with escaped \$and footer ?>end tag.

这样添加带有<?php开始标签的标题，\$my_array =带有转义\$和页脚?>结束标签的变量名称。

Now can use include()like any other valid php script.

现在可以include()像任何其他有效的 php 脚本一样使用。

// storing
$file = '/tmp/out.php';
file_put_contents($file, "<?php\n$my_array = ".var_export($var, true).";\n?>");

// retrieving as included script
include($file);

//testing
print_r($my_array);

out.php will look like this

out.php 看起来像这样

<?php
  $my_array = array (
    'a'=>1,
    'b'=>2,
    'c'=>3,
    'd'=>4,
    'e'=>5
  );
?>

回答by Tor Valamo

You can use serializeto make it into a string to write to file, and the accompanying unserializeto return it to an array structure.

您可以使用serialize将其变成字符串以写入文件，并使用随附的反序列化将其返回为数组结构。

I'd suggest using a language independent structure though, such as JSON. This will allow you to load the files using different languages than PHP, in case there's a chance of that later. json_encodeto store it and json_decode($str, true)to return it.

不过，我建议使用独立于语言的结构，例如 JSON。这将允许您使用与 PHP 不同的语言加载文件，以防以后有可能。json_encode来存储它，json_decode($str, true)来返回它。

回答by Nik Drosakis

Talking about php use, for performance sake, avoid encoding and decoding everything, just save array with:

说到 php 的使用，为了性能考虑，避免编码和解码一切，只需保存数组：

 file_put_contents('dic.php', "<?php \n".'$dic='.var_export($dic, true).';');

and call normally with

并正常调用

include "dic.php";

回答by elias

Use php's serialze:

使用 php 的序列化：

file_put_contents("myFile",serialize($myArray));

回答by undo

I made a tiny library (~2 KB; <100 lines) that allows you to do just this: varDx

我制作了一个小库（~2 KB；<100 行），可以让你做到这一点：varDx

It has functions to write, read, modify, check and delete data. It implements serialization, and therefore supports all data types.

它具有写入、读取、修改、检查和删除数据的功能。它实现了序列化，因此支持所有数据类型。

Here's how you can use it:

使用方法如下：

<?php
require 'varDx.php';
$dx = new \varDx\cDX; //create an object
$dx->def('file.dat'); //define data file

$val1 = "this is a string";
$dx->write('data1', $val1); //writes key to file
echo $dx->read('data1'); //returns key value from file

In your specific case:

在您的具体情况下：

$array1 = array(
    "foo" => "bar",
    "bar" => "foo",
);

//writing the array to file
$dx->write('myarray', $array1);

//reading array from file
$array2 = $dx->read('myarray')

//modifying array in file after making changes
$dx->write('myarray', $array2);