I created this class to get an easy to use form field validation script. Use this class to validate your database inputs or mail forms. Of course there is much more to validate: postcodes, special strings, credit card number etc. In this version is it possible to validate simple text, numbers (with decimals, too), dates, urls, e-mail addresses and for html-tags. Invalid form fields will be reported inside a detailed error message. If all form fields are valid you can use the boolean to submit your form. Try the demo!
By : olaf
Case: You have to validate two text fields, one with the name and one with the e-mail address. The e-mail address is required and you have room for 30 characters in the text field.
Example:
$example = new Validate_fields; // create a new instance of the class
$example->add_text_field("name", "Peter Morris", "text", "n", 30); // define value for the name field
$example->add_link_field("email", "info@hotmail.com", "email", "y"); // and for the email field
$example->validation(); // call the validation method
$example->create_msg(); // this will show you the errors
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