Php/docs/book.filter

• PHP Manual
• Variable and Type Related Extensions
• Data Filtering

• Introduction
• Installing/Configuring
  • Requirements
  • Installation
  • Runtime Configuration
  • Resource Types
• Types of filters
  • Validate filters
  • Sanitize filters
  • Other filters
  • Filter flags
• 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