PHP code example of zakirkun / jett

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

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

    

zakirkun / jett example snippets

// config/database.php
return [
    'default' => 'mysql',
    'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => 'localhost',
            'database' => 'your_database',
            'username' => 'your_username',
            'password' => 'your_password',
        ],
    ],
];

return [
    'default' => 'mysql',
    'connections' => [
        'mysql' => [
            'driver' => 'mysql',
            'host' => 'localhost',
            'port' => 3306,
            'database' => 'your_database',
            'username' => 'your_username',
            'password' => 'your_password',
            'charset' => 'utf8mb4',
            'collation' => 'utf8mb4_unicode_ci',
            'prefix' => '',
            'strict' => true,
            'engine' => null,
        ],
        'pgsql' => [
            'driver' => 'pgsql',
            'host' => 'localhost',
            'port' => 5432,
            'database' => 'your_database',
            'username' => 'your_username',
            'password' => 'your_password',
            'charset' => 'utf8',
            'schema' => 'public',
        ],
    ],
];

return [
    'pool' => [
        'min_connections' => 5,
        'max_connections' => 20,
        'idle_timeout' => 300,
        'retry_interval' => 100,
        'max_retries' => 3
    ],
];

return [
    'cache' => [
        'driver' => 'redis',
        'host' => '127.0.0.1',
        'port' => 6379,
        'password' => null,
        'prefix' => 'jett:',
        'database' => 0,
    ],
];

return [
    'events' => [
        'listeners' => [
            'user.created' => [
                SendWelcomeEmail::class,
                NotifyAdministrator::class,
            ],
        ],
        'subscribers' => [
            UserEventSubscriber::class,
            OrderEventSubscriber::class,
        ],
    ],
];

// Basic query
$users = DB::table('users')
    ->where('active', true)
    ->orderBy('name')
    ->get();

// Complex nested queries
$users = DB::table('users')
    ->where(function($query) {
        $query->where('role', 'admin')
              ->orWhere('permissions', 'like', '%manage_users%');
    })
    ->whereExists(function($query) {
        $query->from('posts')
              ->whereColumn('posts.user_id', 'users.id');
    })
    ->get();

// Advanced relationships
$posts = Post::with(['author', 'comments.user'])
    ->withCount('likes')
    ->having('likes_count', '>', 10)
    ->get();

// Subqueries in select
$users = DB::table('users')
    ->select('name')
    ->selectSub(function($query) {
        $query->from('posts')
              ->whereColumn('user_id', 'users.id')
              ->count();
    }, 'posts_count')
    ->get();

// Advanced joins
$users = DB::table('users')
    ->leftJoin('posts', function($join) {
        $join->on('users.id', '=', 'posts.user_id')
             ->where('posts.published', '=', true);
    })
    ->get();

// Aggregate functions
$stats = DB::table('orders')
    ->select(
        DB::raw('DATE(created_at) as date'),
        DB::raw('SUM(amount) as total_amount'),
        DB::raw('COUNT(*) as order_count')
    )
    ->groupBy('date')
    ->having('total_amount', '>', 1000)
    ->get();

// Configure connection pool
ConnectionPool::configure([
    'min_connections' => 5,
    'max_connections' => 20,
    'idle_timeout' => 300,
    'retry_interval' => 100,
    'max_retries' => 3
]);

// Get connection with automatic retry
$connection = ConnectionPool::getConnection();

// Transaction with deadlock handling
TransactionManager::transaction(function() {
    // Your transaction logic here
}, $retries = 3);

// Nested transactions with savepoints
TransactionManager::transaction(function() {
    DB::table('users')->update(['status' => 'processing']);
    
    TransactionManager::transaction(function() {
        DB::table('orders')->insert([/*...*/]);
        
        TransactionManager::transaction(function() {
            DB::table('inventory')->decrement('stock', 1);
        });
    });
});

// Set transaction isolation level
TransactionManager::setIsolationLevel('REPEATABLE READ');

// Monitor transactions
$activeTransactions = TransactionManager::monitorTransactions();
foreach ($activeTransactions as $trx) {
    echo "Transaction ID: {$trx['trx_id']}\n";
    echo "State: {$trx['trx_state']}\n";
    echo "Started: {$trx['trx_started']}\n";
}

// Transaction with custom error handling
try {
    TransactionManager::begin();
    
    // Your operations here
    
    TransactionManager::commit();
} catch (DeadlockException $e) {
    TransactionManager::rollback();
    // Retry logic
} catch (Exception $e) {
    TransactionManager::rollback();
    throw $e;
}

// Start query analysis
QueryAnalyzer::startQuery($sql, $bindings);

// Get query execution plan
$plan = QueryAnalyzer::explainQuery(
    'SELECT * FROM users WHERE email = ?', 
    ['[email protected]']
);

// Get query statistics
$stats = QueryAnalyzer::getStatistics();
foreach ($stats as $query => $info) {
    echo "Query: {$query}\n";
    echo "Execution Time: {$info['time']}ms\n";
    echo "Rows Affected: {$info['rows']}\n";
    echo "Index Used: {$info['index']}\n";
    echo "Memory Usage: {$info['memory']}\n";
}

// Get slow queries with context
$slowQueries = QueryAnalyzer::getSlowQueries(1000); // queries taking > 1000ms
foreach ($slowQueries as $query) {
    echo "Query: {$query['sql']}\n";
    echo "Parameters: " . json_encode($query['bindings']) . "\n";
    echo "Duration: {$query['duration']}ms\n";
    echo "Stack Trace: {$query['trace']}\n";
}

// Query optimization suggestions
$suggestions = QueryAnalyzer::analyzeTables(['users', 'posts']);
foreach ($suggestions as $table => $tips) {
    echo "Table: {$table}\n";
    foreach ($tips as $tip) {
        echo "- {$tip}\n";
    }
}

// Real-time query monitoring
QueryAnalyzer::enableMonitoring();
try {
    // Your queries here
} finally {
    $metrics = QueryAnalyzer::getMetrics();
    QueryAnalyzer::disableMonitoring();
}

// Query caching analysis
$cacheStats = QueryAnalyzer::getCacheStatistics();
echo "Cache Hit Rate: {$cacheStats['hit_rate']}%\n";
echo "Cache Miss Rate: {$cacheStats['miss_rate']}%\n";
echo "Average Cache Duration: {$cacheStats['avg_duration']}ms\n";

// Performance recommendations
$recommendations = QueryAnalyzer::getRecommendations();
foreach ($recommendations as $rec) {
    echo "Priority: {$rec['priority']}\n";
    echo "Issue: {$rec['issue']}\n";
    echo "Solution: {$rec['solution']}\n";
}

// Create table
$schema = new SchemaManager();
$schema->createTable('users', [
    'id' => ['type' => 'INT', 'auto_increment' => true],
    'name' => ['type' => 'VARCHAR', 'length' => 255],
    'email' => ['type' => 'VARCHAR', 'length' => 255, 'unique' => true],
    'created_at' => ['type' => 'TIMESTAMP', 'default' => 'CURRENT_TIMESTAMP']
]);

// Add foreign key
$schema->addForeignKey('posts', 'user_id', 'users', 'id', [
    'on_delete' => 'CASCADE',
    'on_update' => 'CASCADE'
]);

// Compare schemas
$differences = $schema->compareSchema('users', 'users_backup');

// Configure Redis cache
DistributedCache::configure([
    'host' => '127.0.0.1',
    'port' => 6379,
    'prefix' => 'myapp:'
]);

// Basic cache operations
DistributedCache::set('user:1', $userData, 3600); // 1 hour TTL
$user = DistributedCache::get('user:1');

// Cache with tags
DistributedCache::tags(['users', 'active'])
    ->set('user:1', $userData, 3600);

// Atomic operations
$visits = DistributedCache::increment('page:visits');

// Cache with callback
$user = DistributedCache::remember('user:1', 3600, function() {
    return User::find(1);
});

// Register event listener
EventManager::listen('user.created', function($user) {
    // Handle user created event
});

// Register event subscriber
class UserEventSubscriber extends Subscriber
{
    public function subscribe(): void
    {
        $this->listen('user.created', [$this, 'onUserCreated']);
        $this->listen('user.updated', [$this, 'onUserUpdated']);
    }

    public function onUserCreated($user): void
    {
        // Handle user created
    }

    public function onUserUpdated($user): void
    {
        // Handle user updated
    }
}

EventManager::subscribe(UserEventSubscriber::class);

// Dispatch event
EventManager::dispatch('user.created', [$user]);

bash
mkdir config
touch config/database.php