A flexible PHP library for filtering and validating user input with built-in filters and complex chaining.
Filterus is a PHP filtering library that simplifies the validation and sanitization of user input. It provides built-in filters for common data types like strings, integers, emails, and arrays, along with options for customization, helping secure web applications and APIs by enforcing data integrity with minimal boilerplate code.
PHP developers building web applications or APIs that require robust input validation and sanitization, particularly those working with PHP 5.3 or later who need a flexible, lightweight solution.
Developers choose Filterus for its simplicity and flexibility, offering both procedural and object-oriented interfaces, support for complex filtering operations like chaining and pooling, and easy configuration via comma-separated strings or arrays without heavy dependencies.
A simple filtering library for PHP
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Includes filters for common data types like emails, IPs, URLs, and arrays with configurable options such as min/max lengths, reducing manual validation code.
Supports complex operations like chaining (AND) and pooling (OR) filters, and mapping over associative arrays for structured data validation, as shown in the README examples.
Offers \Filterus\filter() and \Filterus\validate() functions for easy usage without object instantiation, simplifying common validation tasks.
Compatible with PHP 5.3+, making it a viable option for older projects that cannot upgrade to newer PHP versions without external dependencies.
Requires only PHP 5.3, so it lacks support for modern PHP features like type hints, PSR standards, or attributes, which can hinder integration with contemporary codebases.
Does not include filters for date/time validation, file uploads, or custom callback validations, limiting its use in complex web applications.
The README provides basic examples but lacks in-depth tutorials, error handling guides, or security best practices, making it challenging for new users.
Validation only returns booleans without detailed error messages or exceptions, forcing developers to implement custom error management.