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Php

1. PHP Forms Presentation
جذامنلا
Understanding Form Handling, Validation,
and Completion in PHP

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م-لابعلا يلع

2. Introduction to PHP Forms

What are PHP forms?
◦Web forms allow user interaction and data submission.
◦PHP acts as the backend handler for submitted form data.
Importance of PHP in handling web forms:
◦Server-side data validation and processing.
◦Security enhancements like data sanitization.
Key Topics:
◦Form Handling
◦Form Validation
◦Form Requirements
◦Handling URLs and Emails
◦Completing the Form Process

3. PHP Form Handling

4. PHP Form Validation

Purpose:
◦Ensures the data entered by users meets the requirements.
◦Prevents malicious inputs.
Key Validation Steps:
◦Check if fields are empty.
◦Validate data type and format.
◦Sanitize user input.














. Best Practices:
◦Always validate data on the server.
◦Use built-in PHP functions for validation and sanitization.

5. PHP Form Required Fields

Concept:
◦Certain fields must be filled in by users before form submission.
Techniques:
◦Use HTML5 required attribute for client-side validation.
◦Add server-side checks in PHP for security.

6. PHP Form URL/E-mail Validation

Why Validate URLs and Emails?
◦Ensures correct formats and prevents invalid submissions.
PHP Filters:
◦FILTER_VALIDATE_URL: Validates URL format.
◦FILTER_VALIDATE_EMAIL: Validates email format.

7. PHP Form Completion

Filters and Sanitization:
◦Filters:
FILTER_SANITIZE_STRING: Removes harmful characters from a string.
FILTER_SANITIZE_EMAIL: Removes invalid characters from emails.
FILTER_SANITIZE_URL: Cleans URLs.
◦Sanitization ensures data is safe for processing.
Validation:
◦Checks whether the input adheres to required rules.
User enters data.
PHP filters and validates the input.
Confirmation or error message is displayed.

8. Practical Examples

9. Summary
Review:
◦Form Handling: GET and POST methods.
◦Validation Techniques: Filters and sanitization.
◦Required Fields: Ensure mandatory input.
◦URL and Email Validation: Use PHP filters.
◦Form Completion: Store and process data.
Importance:
◦Secure user interaction.
◦Reliable data processing.