How to Store and Retrieve PHP Arrays Locally Using JSON Serialization?

Storing an Array for Local Retrieval in PHP

Storing an array in a file for later access as an array in PHP can be achieved effortlessly using JSON serialization. This method offers human readability and enhanced performance, as the resulting file is smaller in size and can be loaded and saved swiftly.

To implement this technique, two functions are utilized:

• json_encode: Encodes an array into a JSON string.
• json_decode: Decodes a JSON string back into an array.

Here's an example showcasing the process:

<code class="php">$arr1 = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5];

// Save the array as JSON to a file
file_put_contents("array.json", json_encode($arr1));

// Retrieve the array from the file
$arr2 = json_decode(file_get_contents('array.json'), true);

// Check if the two arrays are equal (expected to be true)
var_dump($arr1 === $arr2);</code>

Custom store_array() and restore_array() functions can be easily implemented using this approach. JSON serialization outperforms other methods in terms of speed and efficiency, making it an ideal choice for storing arrays for subsequent retrieval.

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