PHP Validation

Free and open source PHP scripts about Validation algorithms.Anti-spam, CAPTCHA, form validation provided
  1. No Screenshot
    1652 total visits
    Image Verification can generate an image with a random text. The text is rendered using a random font, a random inclination angle and has several lines over the text to make it fuzzy. The image is generated in the JPEG format.A session variable is used to store the verification text so that Image Verification can verify if the user's input ...
  2. No Screenshot
    1657 total visits
    Make Captcha generates an image of a given size with a random text string rendered on the image.The MD5 hash of the random text string is stored in a session variable for later verification. The color, text font and size can be configured.The image is generated in the PNG format as output of the current script.Requirements: PHP 4.1 or higher
  3. No Screenshot
    1859 total visits
    Very Simple Captcha generates an image with a random validation text. The image has some lines and shapes rendered in a different color to obfuscate the text.The width and height of the image, and the length and the font of the text are configurable details. The generated image is served in the JPEG format as the active script output.Requirements: PHP ...
  4. No Screenshot
    1540 total visits
    Form Spam Bot Blocker generates hidden inputs for forms that have special values that are verified on the server after the form is submitted to eventually detect whether the form was sent by a spam robot. A hidden input, containing an encoded value of the user browser, IP address and current time, is generated.Form Spam Bot Blocker verifies whether these ...
  5. No Screenshot
    1821 total visits
    iCaptcha presents several images and asks the user to answer a question related to the pictures. Only one picture is the right answers. The user has to pick the right picture to pass the validation.iCaptcha presents the question and pictures in a form with radio buttons associated to each picture to let the user pick the right picture that answers ...
  6. No Screenshot
    2095 total visits
    CAPTCHA X generates an image with a random text rendered in a fuzzy way to make it difficult to guess by robots.The configuration details are read from an file in the ini format. Several types of options can be configured like the text fonts, letters, colors and the noise level of the generated image.The verification image is generated in the ...
  7. No Screenshot
    1766 total visits
    A list of allowed characters are used to generate random text. The text is rendered as an image with several effects to distort the characters and make it more difficult to guess by automated programs. The text is rendered with fonts defined as images in the PNG format. So it does not need any PHP special font engine library extensions.The ...
  8. No Screenshot
    1635 total visits
    Animated Simple CAPTCHA generates a random text that is stored in a session for posterior user validation. It renders a series of frames with the text obfuscated by animated letters, grids and optional random fonts.The user can read the text when the animated frames are displayed but robots will have difficult to figure what the text is. The text submitted ...
  9. No Screenshot
    1899 total visits
    Animated CAPTCHA generates an animated GIF image that displays a mathematical expression of a simple operation between two random numbers, like sum, subtraction and multiplication.Session variables are used to store the numbers and the operation for posterior use.Requirements: PHP 4.0 or higher
  10. No Screenshot
    2033 total visits
    CAPTCHA by Anchal can generate an image with a text string with a variable length of a set of allowed characters. It generates an image with the generated text obfuscated by noise text or grid lines.The generated image is stored in a JPEG format file created in a temporary server directory. The text entered by the user can also be ...
  11. No Screenshot
    1565 total visits
    GD Image Verification Class generates images with random secret texts. The secret texts are stored on the server side using session variables. The GD library is used to generate the images in JPEG format.GD Image Verification Class also provides a verification function to determine whether the text in the image matches the text eventually entered by an user in a ...
  12. No Screenshot
    2213 total visits
    Text words are analyzed in terms of n-grams independent of the language used.Bayesian Spam Filter can be trained to progressively distinguish what is spam and what is not spam by detecting patterns in training samples. Training data is stored in a MySQL database.Requirements: PHP 4.0 or higher
  13. No Screenshot
    1462 total visits
    Another CAPTCHA project generates a sequence of animated images, assembled with in a GIF animation file, to make it more difficult to break by robots because the validation text does not completely appear in each of the animation images.Things like the text length, color and font can be configured.
  14. No Screenshot
    1903 total visits
    An image with a random key string on a noisy background constructed from random text characters or line grid, is generated.The image is meant to be used in a form so the user reads the key text in the image and must enter it to prove that is a real human.The form also passes an hidden field that contains a ...
  15. No Screenshot
    2183 total visits
    ASCII CAPTCHA generates a CAPTCHA validation text string with random letters and then renders that text as an ASCII art string with multiple lines that represent the validation text with some distortion and noise characters.The rendered text and the random validation text are returned as strings.Requirements:PHP 3.0 or higher
Pages 9 of 13« 5 6 7 8 9 10 11 12 13 »