(PHP Extension) Read/Write JSON with Binary Data such as JPEG Files

Demonstrates how binary files could be stored in JSON in base64 format. Creates JSON containing the contents of a JPG file, and then reads the JSON to extract the JPEG image.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// First load a small JPG file..
$bd = new CkBinData();

$success = $bd->LoadFile('qa_data/jpg/starfish20.jpg');
// Assume success, but your code should check for success..

// Create JSON containing the binary data in base64 format.
$json1 = new CkJsonObject();
$json1->UpdateBd('starfish','base64',$bd);

$jsonStr = $json1->emit();
print $jsonStr . "\n";

// Here's the output:
// {"starfish":"/9j/4AAQSkZJRgA ... cN2iuLFsCEbDGxQkI6RO/n//2Q=="}

// Let's create a new JSON object, load it with the above JSON, and extract the JPG image..
$json2 = new CkJsonObject();
$json2->Load($jsonStr);

// Get the binary bytes.
$bd2 = new CkBinData();
$json2->BytesOf('starfish','base64',$bd2);

// Save to a file.
$success = $bd2->WriteFile('qa_output/starfish20.jpg');

print 'Success.' . "\n";

?>