# php-license-key-generator | Mehmet Selcuk Batal | Knowledge Base | Instagit

SunLicense is a simple and robust PHP product license key generator class.

GitHub Stars: 5

Repository: https://github.com/msbatal/php-license-key-generator

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## Articles

### [Where Are the Test Files for the SunLicense Library Located?](/msbatal/php-license-key-generator/where-are-test-files-sunlicense-library-located)

Find SunLicense library test files in the top-level test directory. Discover PHPUnit unit tests and a bootstrap runner for quick access and validation.

- Tags: testing
- Published: 2026-03-07

### [Minimum PHP Version Required for SunLicense in PHP License Key Generator](/msbatal/php-license-key-generator/minimum-php-version-required-sunlicense)

Discover the minimum PHP version needed for SunLicense. Learn how to generate and validate license keys with PHP 5.5 or newer for the msbatal PHP License Key Generator.

- Tags: api-reference
- Published: 2026-03-07

### [What Happens If the Requested Number of Unique Keys Cannot Be Generated in PHP License Key Generator](/msbatal/php-license-key-generator/what-happens-if-requested-number-of-unique-keys-cannot-be-generated)

Discover why the PHP license key generator might return duplicate keys and how it handles ungeneratable unique keys without errors. Learn more about this behavior.

- Tags: internals
- Published: 2026-03-07

### [Can You Use Special Characters in the SunLicense Template? A Deep Dive into the PHP License Key Generator](/msbatal/php-license-key-generator/can-i-use-special-characters-sunlicense-template)

Learn if you can use special characters in the SunLicense template. Discover how the PHP license key generator handles unsupported characters to avoid errors and ensure valid keys.

- Tags: deep-dive
- Published: 2026-03-07

### [What License Does the PHP License Key Generator Use?](/msbatal/php-license-key-generator/what-license-php-license-key-generator-use)

Discover the license for the msbatal/php-license-key-generator. Learn if it uses LGPL 3.0 or LGPL 2.1 for your project needs.

- Tags: getting-started
- Published: 2026-03-07

### [How to Change the Case of Generated License Keys in PHP: Uppercase vs Lowercase](/msbatal/php-license-key-generator/how-to-change-case-generated-license-keys-upper-lower)

Easily control license key case in PHP. Learn how to generate uppercase or lowercase keys using the SunLicense constructor in this quick guide.

- Tags: how-to-guide
- Published: 2026-03-07

### [Performance Considerations for Generating a Large Number of Keys with SunLicense](/msbatal/php-license-key-generator/performance-considerations-generating-large-number-of-keys-sunlicense)

Discover performance issues generating many SunLicense keys including O(n²) complexity and memory growth. Learn hash-set optimization and batch streaming for >10000 keys.

- Tags: performance
- Published: 2026-03-07

### [How to Integrate SunLicense into an Existing PHP Project](/msbatal/php-license-key-generator/how-to-integrate-sunlicense-into-existing-php-project)

Easily integrate SunLicense into your PHP project. Generate secure license keys with this dependency-free, single-file PHP class. Learn how to instantiate and use the generate() method for robust license key creation.

- Tags: how-to-guide
- Published: 2026-03-07

### [What Is the Purpose of the Exception Handler in SunLicense.php?](/msbatal/php-license-key-generator/purpose-of-exceptionhandler-sunlicense-php)

Discover the purpose of the exception handler in SunLicense.php. Learn how it provides user-friendly error messages for smoother license key generation.

- Tags: internals
- Published: 2026-03-07

### [How Random Letter Generation Works in SunLicense: ASCII Code Implementation](/msbatal/php-license-key-generator/random-letter-generation-how-it-works-sunlicense-ascii-codes)

Discover how SunLicense generates random letters using ASCII codes and PHP's rand() and chr() functions. Understand the implementation for license key generation.

- Tags: internals
- Published: 2026-03-07

### [How SunLicense Handles Specific Character Sets for License Keys in PHP](/msbatal/php-license-key-generator/does-sunlicense-handle-specific-character-sets-for-license-keys)

Discover how SunLicense manages character sets for PHP license keys. Learn about its template system and limitations on custom character sets for secure key generation.

- Tags: how-to-guide
- Published: 2026-03-07

### [How to Access Generated License Keys Using the SunLicense Class](/msbatal/php-license-key-generator/how-to-access-generated-license-keys-after-using-sunlicense-class)

Learn how to access generated license keys with the SunLicense class. Discover two ways to retrieve your keys from the public $keys array or the generate method.

- Tags: how-to-guide
- Published: 2026-03-07

### [What Is the Default Template Used by SunLicense When No Template Is Provided?](/msbatal/php-license-key-generator/what-is-default-template-used-by-sunlicense)

Discover the default template SunLicense uses when no custom pattern is provided. Learn about the built-in X9XX99-XX99-9X9X-99XX9X pattern.

- Tags: api-reference
- Published: 2026-03-07

### [How to Generate Multiple Unique License Keys at Once Using SunLicense](/msbatal/php-license-key-generator/generate-multiple-unique-license-keys-at-once-sunlicense)

Learn to generate multiple unique license keys at once with SunLicense. Simply pass the count parameter to the constructor for batch generation and receive an array of keys.

- Tags: how-to-guide
- Published: 2026-03-07

### [How SunLicense Checks for Duplicate License Keys in PHP](/msbatal/php-license-key-generator/how-sunlicense-check-duplicate-license-keys)

Discover how SunLicense prevents duplicate license keys in PHP. Learn about its internal $keys property and efficient check() method using in_array for robust license management.

- Tags: internals
- Published: 2026-03-07

### [How to Add a Prefix to Generated License Keys with SunLicense](/msbatal/php-license-key-generator/add-prefix-generated-license-keys-sunlicense)

Learn to add a prefix to generated license keys using SunLicense. Easily prepend custom text to your license keys by passing a string to the constructor for enhanced organization and tracking.

- Tags: how-to-guide
- Published: 2026-03-07

### [How to Generate License Keys in Lowercase Using SunLicense](/msbatal/php-license-key-generator/generate-license-keys-lowercase-sunlicense)

Easily generate lowercase license keys with SunLicense. Learn how to set the case parameter to lower for effortless lowercase key generation in your PHP applications.

- Tags: how-to-guide
- Published: 2026-03-07

### [How to Use a Custom Template with the PHP License Key Generator](/msbatal/php-license-key-generator/how-to-use-custom-template-with-php-license-key-generator)

Learn to use custom templates with the PHP License Key Generator by passing your pattern to the constructor. Generate keys matching your exact specification effortlessly.

- Tags: how-to-guide
- Published: 2026-03-07

### [Template Format Used by SunLicense for Key Generation: Complete Guide](/msbatal/php-license-key-generator/template-format-used-by-sunlicense-for-key-generation)

Learn the SunLicense template format for key generation. Understand how letters, digits, and separators create unique license keys for your software.

- Tags: deep-dive
- Published: 2026-03-07

### [How the SunLicense Class Generates License Keys Internally: A Deep Dive into the PHP Algorithm](/msbatal/php-license-key-generator/how-sunlicense-class-generates-license-keys-internally)

Explore the internal PHP algorithm of the SunLicense class. Learn how it generates unique license keys by parsing templates, replacing characters, and detecting collisions.

- Tags: internals
- Published: 2026-03-07

### [What Are the Dependencies for the SunLicense PHP Class? Complete Guide](/msbatal/php-license-key-generator/dependencies-for-sunlicense-php-class)

Discover the dependencies for the SunLicense PHP class. This guide reveals it requires zero external dependencies and runs on core PHP 5.6+ functions.

- Tags: how-to-guide
- Published: 2026-03-07

### [How to Install the PHP License Key Generator Library (SunLicense)](/msbatal/php-license-key-generator/how-to-install-php-license-key-generator-library)

Install the PHP License Key Generator library easily. This drop-in solution requires PHP 5.5+ and has no external dependencies. Get started generating license keys today.

- Tags: getting-started
- Published: 2026-03-07