Live Examples - UUID Library v1.3.0

Interactive examples showing all UUID versions with real-time generation. Click the buttons to generate new UUIDs!

Interactive UUID Generation & Validation

Each UUID version serves different purposes. Use the interactive tools below to generate new UUIDs and validate existing ones:

Usage Examples

Basic Generation

use Webpatser\Uuid\Uuid;
 
// Random UUID (most common)
$uuid = Uuid::v4();
echo $uuid; // e.g., "f47ac10b-58cc-4372-a567-0e02b2c3d479"
 
// Time-based UUID
$timeUuid = Uuid::v1();
echo $timeUuid; // e.g., "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
 
// Modern timestamp UUID (recommended for databases)
$modernUuid = Uuid::v7();
echo $modernUuid; // e.g., "018f4e7c-8b3a-7000-8000-123456789abc"

Name-based UUIDs

use Webpatser\Uuid\Uuid;
 
// Deterministic UUIDs from names
$uuid3 = Uuid::generate(3, 'example.com', Uuid::NS_DNS);
echo $uuid3; // Always: 9073926b-929f-31c2-abc9-fad77ae3e8eb
 
$uuid5 = Uuid::generate(5, 'example.com', Uuid::NS_DNS);
echo $uuid5; // Always: cfbff0d1-9375-5685-968c-48ce8b15ae17
 
// Custom namespace
$customNamespace = Uuid::v4();
$customUuid = Uuid::generate(5, 'my-data', $customNamespace);

Code Examples

Copy these examples to get started:

use Webpatser\Uuid\Uuid;
 
// Most common patterns
$randomUuid = Uuid::v4();                    // General purpose
$timestampUuid = Uuid::v7();                 // Database records
$deterministicUuid = Uuid::generate(5, $name, Uuid::NS_DNS); // From name
 
// Different formats
echo $randomUuid->string;     // "123e4567-e89b-12d3-a456-426614174000"
echo $randomUuid->hex;        // "123e4567e89b12d3a456426614174000"
echo bin2hex($randomUuid->bytes); // Same as hex
 
// Validation and comparison
if (Uuid::validate($input)) {
    $uuid = Uuid::import($input);
    if (Uuid::compare($uuid, $otherUuid)) {
        echo "UUIDs match!";
    }
}

Advanced Examples

Batch Generation

use Webpatser\Uuid\Uuid;
 
// Generate multiple UUIDs efficiently
$uuids = [];
for ($i = 0; $i < 1000; $i++) {
    $uuids[] = Uuid::v7(); // Time-ordered for better database performance
}
 
// Custom namespace for your application
$appNamespace = Uuid::generate(5, 'myapp.com', Uuid::NS_DNS);
 
// Generate deterministic UUIDs for users
$userIds = [];
foreach (['alice', 'bob', 'charlie'] as $username) {
    $userIds[$username] = Uuid::generate(5, $username, $appNamespace);
}

Database Usage

use Webpatser\Uuid\Uuid;
 
// Laravel migration example
Schema::create('users', function (Blueprint $table) {
    $table->uuid('id')->primary();
    $table->string('email')->unique();
    $table->timestamps();
});
 
// Model with UUID primary key
class User extends Model
{
    protected $keyType = 'string';
    public $incrementing = false;
 
    protected static function boot()
    {
        parent::boot();
 
        static::creating(function ($model) {
            $model->id = Uuid::v7(); // Time-ordered for better DB performance
        });
    }
}