Data Filtering

Introduction
Installing/Configuring
Types of filters
Predefined Constants
Examples
- Validation
- Sanitization
Filter Functions
- filter_has_var — Checks if variable of specified type exists
- filter_id — Returns the filter ID belonging to a named filter
- filter_input_array — Gets external variables and optionally filters them
- filter_input — Gets a specific external variable by name and optionally filters it
- filter_list — Returns a list of all supported filters
- filter_var_array — Gets multiple variables and optionally filters them
- filter_var — Filters a variable with a specified filter

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