PHP code example of qoliber / djson

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

qoliber / djson example snippets

use Qoliber\DJson\DJson;

$djson = new DJson();

$template = [
    'greeting' => 'Hello {{name | upper}}!',
    'users' => [
        '@djson for users as user',
        'name' => '{{user.name}}',
        'email' => '{{user.email}}'
    ]
];

$data = [
    'name' => 'world',
    'users' => [
        ['name' => 'John', 'email' => '[email protected]'],
        ['name' => 'Jane', 'email' => '[email protected]']
    ]
];

$result = $djson->process($template, $data);
// ['greeting' => 'Hello WORLD!', 'users' => [...]]

// These are BLOCKED - throws InvalidArgumentException
$djson->registerFunction('exec', fn($cmd) => shell_exec($cmd));
$djson->registerFunction('eval', fn($code) => eval($code));
$djson->registerFunction('file_get_contents', fn($path) => file_get_contents($path));
// Error: "dangerous pattern 'exec'... use registerUnsafeFunction()"

// Trying the "unsafe" method? ALSO blocked! (troll mode activated)
$djson->registerUnsafeFunction('exec', fn($cmd) => shell_exec($cmd));
// Error: "Sorry matey, no unsafe functions allowed! Security is mandatory!"

// These are SAFE and work perfectly
$djson->registerFunction('currency', fn($v, $s = '$') => $s . number_format($v, 2));
$djson->registerFunction('md5hash', fn($v) => md5($v));
$djson->registerFunction('base64', fn($v) => base64_encode($v));
$djson->registerFunction('truncate', fn($v, $len = 50) => substr($v, 0, $len) . '...');

// BLOCKED - Even though function name is safe, the code inside is dangerous!
$djson->registerFunction('process_data', function ($input) {
    return eval($input);  // Detected via reflection!
});
// Error: "callable's source code contains a call to prohibited function pattern 'eval'"

// BLOCKED - Database access detected in callable
$djson->registerFunction('get_user', function ($id) {
    return mysqli_query($conn, "SELECT * FROM users WHERE id = $id");
});
// Error: "callable's source code contains a call to prohibited function pattern 'mysqli'"

$template = [
    'title' => '{{product.name | upper}}',
    'price' => '{{product.price | number_format(2)}}',
    'date' => '{{timestamp | date("Y-m-d")}}'
];

$template = [
    'items' => [
        '@djson for products as product',
        'position' => '{{_index}}',        // Current index
        'isFirst' => '{{_first}}',         // true if first item
        'isLast' => '{{_last}}',           // true if last item
        'name' => '{{product.name}}'
    ]
];

$template = [
    '@djson if user.isPremium',
    'status' => 'Premium Member',
    '@djson else',
    'status' => 'Free User'
];

$template = [
    '@djson match status',
    '@djson case active',
    'message' => 'User is active',
    '@djson case pending',
    'message' => 'Awaiting approval',
    '@djson default',
    'message' => 'Status unknown'
];

$template = [
    '@djson set total = price * quantity',
    '@djson set discount = total * 0.1',
    '@djson set final = total - discount',
    'finalPrice' => '{{final | number_format(2)}}'
];

$template = [
    '@djson if stock > 0',
    'available' => true,
    '@djson unless stock < 10',
    'lowStock' => false
];

$template = [
    'product' => '{{name}}',
    '@djson set subtotal = price * quantity',
    '@djson set tax = subtotal * 0.2',
    '@djson set total = subtotal + tax',
    'pricing' => [
        'subtotal' => '{{subtotal | number_format(2)}}',
        'tax' => '{{tax | number_format(2)}}',
        'total' => '{{total | number_format(2)}}'
    ]
];

$template = [
    '@djson match userType',
    '@djson case admin',
    'permissions' => ['read', 'write', 'delete'],
    '@djson case editor',
    'permissions' => ['read', 'write'],
    '@djson case viewer',
    'permissions' => ['read'],
    '@djson default',
    'permissions' => []
];

// Process array/JSON template, return array
$result = $djson->process($template, $data);

// Process and return JSON string
$json = $djson->processToJson($template, $data, JSON_PRETTY_PRINT);

// Load from file, return array
$result = $djson->processFile('template.json', $data);

// Load from file, return JSON string
$json = $djson->processFileToJson('template.json', $data, JSON_PRETTY_PRINT);

// Validate template (returns array of errors, empty if valid)
$errors = $djson->validate($template);