PHP Programming

  1. Handling Web Forms and User Input
    1. HTML Forms
      1. Form Element Structure
        1. Form Attributes
          1. action Attribute
            1. method Attribute
              1. enctype Attribute
              2. Input Elements
                1. Text Inputs
                  1. Password Inputs
                    1. Hidden Inputs
                      1. Checkboxes
                        1. Radio Buttons
                          1. Select Dropdowns
                            1. Textareas
                              1. File Inputs
                                1. Submit Buttons
                                2. HTTP Methods
                                  1. GET Method
                                    1. POST Method
                                      1. Method Selection Criteria
                                    2. Receiving Data in PHP
                                      1. $_GET Superglobal
                                        1. Query String Parameters
                                          1. URL Encoding
                                          2. $_POST Superglobal
                                            1. Form Data Processing
                                              1. Content Types
                                              2. $_REQUEST Superglobal
                                                1. Combined Access
                                                  1. Security Considerations
                                                  2. Accessing Form Data
                                                    1. Individual Field Access
                                                      1. Iterating Form Data
                                                        1. Handling Missing Data
                                                        2. File Upload Handling
                                                          1. $_FILES Superglobal
                                                            1. Upload Process
                                                              1. Multiple File Uploads
                                                            2. Data Validation and Sanitization
                                                              1. Input Validation Principles
                                                                1. PHP Filter Functions
                                                                  1. filter_var()
                                                                    1. filter_input()
                                                                      1. filter_input_array()
                                                                        1. Filter Flags
                                                                        2. Validation Types
                                                                          1. Email Validation
                                                                            1. URL Validation
                                                                              1. Integer Validation
                                                                                1. Float Validation
                                                                                  1. Boolean Validation
                                                                                    1. Regular Expression Validation
                                                                                    2. String Validation
                                                                                      1. Length Checks
                                                                                        1. Format Validation
                                                                                          1. Character Set Validation
                                                                                          2. Data Sanitization
                                                                                            1. HTML Tag Removal
                                                                                              1. Special Character Escaping
                                                                                                1. Whitespace Trimming
                                                                                                  1. Data Type Conversion
                                                                                                  2. Custom Validation Functions
                                                                                                    1. Error Handling and Reporting

                                                                                                  Previous

                                                                                                  4. Working with Data Structures

                                                                                                  Go to top

                                                                                                  Next

                                                                                                  6. Object-Oriented Programming in PHP