Latest Tutorials| Questions and Answers|Ask Questions?|Site Map



Home Answers Viewqa PHP How to implement Captcha in PHP Form using GD Library

Have Programming Question? Ask it here!
 
 
 


Praveen
How to implement Captcha in PHP Form using GD Library
1 Answer(s)      3 years and 4 months ago
Posted in : PHP


Hi,

How to show Captcha in PHP Form. So, please suggest any online reference so that i will try myself.

Thanks,


Advertisement
View Answers

March 17, 2011 at 11:23 AM


Hi,

The Captcha format is simple test to determine the user is a human not as a computer. It is used to prevent spam abuse on the websites. Learn How to Display the Captcha using in PHP. For more details visit to :...

http://roseindia.net/tutorial/php/phpgd/About-captcha.html

Thanks,



Related Tutorials/Questions & Answers:
How to implement Captcha in PHP Form using GD Library
How to implement Captcha in PHP Form using GD Library  Hi, How to show Captcha in PHP Form. So, please suggest any online reference so that i will try myself. Thanks
PHP GD captcha
<?php session_start(); class CaptchaSecurityImages { var $font... initialize new GD image stream'); $background_color = imagecolorallocate($image...'; $captcha = new CaptchaSecurityImages($width,$height,$characters); ?>
Advertisements
PHP GD Captcha Refersh
index.php <?php session_start(); if(isset($_POST['submit_x']) &...($_POST['message'])) { $data = base64_decode($_SESSION['captcha_image_code']); $captcha_image = imagecreatefromstring($data); $x = $_POST['submit_x
PHP GD Library, PHP GD Tutorial
The PHP GD Library is one of the most used image-processing libraries used..., resize, crop image on the fly. In this section you will learn PHP GD Library in detail. Let?s get start with the PHP GD Library
PHP GD get gd information
<?php echo '<pre> '; print_r(gd_info()); echo '</pre> '; ?> After running the program you will get the following output Array ( [GD Version] => bundled (2.0.34 compatible) [FreeType Support
PHP GD copy of image
<?php $src = imagecreatefromjpeg('images.jpg'); $dest = imagecreatetruecolor(80, 40); imagecopy($dest, $src, 0, 0, 20, 13, 80, 40); header('Content-Type: image/jpeg'); imagejpeg($dest); imagedestroy($dest
PHP GD draw line
<?php header ("Content-type: image/jpeg"); $handle = ImageCreate (130, 50) or die ("Cannot Create image"); $bg_color = ImageColorAllocate ($handle, 255, 0, 0); $txt_color = ImageColorAllocate
About PHP GD
What is PHP GD Library GD: The GD graphics library is a developed by Thomas..., PHP, Tcl, Lua, REXX, Ruby etc.  The GD library is used to create... of GD involve web-site development.   Features of PHP GD Library: GD
using captcha with Struts - Struts
using captcha with Struts  Hello everybody: I'm developping a web application using Struts framework, and i would like to use captcha  Hi friend,Java Captcha in Struts 2 Application :http://www.roseindia.net
How to implement FTP using java
How to implement FTP using java  Hi, I am a B.tech student and I want to implement FTP using Java to transfer files and exchange files between FTP client and FTP server. Could anyone help me for How to implement FTP using java
php gd blur
<?php $image = imagecreatetruecolor(225,225); imagestring($image, 10, 20, 16, 'Roseindia', 0x00ff00); $gaussian = array(array(1.0, 2.0, 1.0), array(2.0, 4.0, 2.0), array(1.0, 2.0, 1.0)); imageconvolution($image
PHP GD spiral Images
<?php $text = "Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia Roseindia"; $image = imagecreatetruecolor(400,400); $white = imagecolorallocate($image,255,255,255
PHP GD polygon Shapes
<?php $points = shape(8,100); $points = translatePolygon($points,100,100);   $image = imagecreatetruecolor(200,200); $white = imagecolorallocate($image,255,255,255); imagefill($image,0,0,$white); $red
How to Create Login/ Registration Form using PHP and MYSQL
How to Create Login/ Registration Form using PHP and MYSQL  Hi, I am learning PHP. I have some dilemma how to create a Login Form and make connectivity with HTML page using PHP and MYSQL. Is there any body can guide me
captcha
captcha  How can Place Captcha using simple plugin.how can i added my eclipse frame work Thanks venu
php gd image create from string
<?php $String = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl' . 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr' . 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r
how to generate captcha in jsp page ? - JSP-Servlet
how to generate captcha in jsp page ?  hi friends, i would like to implement Captcha in login screen. i'm unsing struts. could you please give some sample codes to implement this. Thank you Ganesh  Hi, This link
PHP GD Add Border to image
<?php $im = imagecreate(200, 60); $bg = imagecolorallocate($im, 225, 225, 225); $textcolor = imagecolorallocate($im, 0, 0, 255); imagestring($im, 5, 30, 20, "Roseindia", $textcolor); $bordercolors
PHP GD Color Transparency Using Alpha Blending
<?php define("WIDTH", 300); define("HEIGHT", 300); $img = imagecreatetruecolor(WIDTH, HEIGHT); $black = imagecolorallocate($img, 0, 0, 0); $yellow = imagecolorallocate($img, 0xFF, 0xFF, 00); $red
PHP GD Pie Chart
<?php $image = imagecreatetruecolor(300, 300); $white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF); $gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0); $darkgray = imagecolorallocate($image, 0x90, 0x90, 0x90
Php gd hello world
<?php ini_set("display_errors", "1"); error_reporting(E_ALL); header('content-type: image/png'); $image = imagecreatetruecolor(300, 300); $dark_grey = imagecolorallocate($image, 102, 102, 102
Form Tag library configuration
In this section, you will learn about Spring form tag library and its configuration
PHP GD image set pixel
<?php $x = 200; $y = 200; $gd = imagecreatetruecolor($x, $y...; 190); $red = imagecolorallocate($gd, 255, 255, 255); for ($i = 0; $i < 100000; $i++) { imagesetpixel($gd, round($x),round($y), $red
How to design a form using java?
How to design a form using java?  Please help in designing of form using java for my project
how to post data in mysql php form
how to post data in mysql php form  how to post data in mysql php form
PHP GD imagesy
<?php $img = imagecreatetruecolor(300, 200); echo imagesy($img); ?> After running the program you will get the following output OUTPUT:200
PHP GD imagesx
<?php $img = imagecreatetruecolor(300, 200); echo imagesx($img); ?> After running the program you will get the following output OUTPUT :300
how to create a user registration form in php
how to create a user registration form in php  how to create a user registration form in php
PHP GD Hue an Image
<?php $im = imagecreatefromJPEG('images.jpg'); echo 'Hue white& black:' . imagecolorclosesthwb($im, 116, 115, 152); imagedestroy($im); ?> After running the program you will get the following output OUTPUT:Hue
PHP GD crop image
<?php $src = imagecreatefromjpeg('image1.jpg'); $dest = imagecreatetruecolor(80, 40); imagecopy($dest, $src, 0, 0, 20, 13, 80, 40); header('Content-Type: image/jpeg'); imagegif($dest); imagedestroy($dest
PHP GD rotate image
<?php $image = 'images.jpg'; $degrees = 180; header('Content-type: image/jpeg') ; $source = imagecreatefromjpeg($image) ; $rotate = imagerotate($source, $degrees, 0) ; imagejpeg($rotate) ; ?> After running
PHP GD imagettfbox
<?php $im = imagecreatetruecolor(300, 150); $black...'; $bbox = imagettfbbox(10, 45, $font, 'PHP version ' . phpversion..., $black, $font, 'PHP version ' . phpversion()); $bbox = imagettfbbox(10
PHP GD Merge Image
<?php $backgroundSource = "merge.jpg"; $feedBurnerStatsSource = "images.jpg"; $outputImage = imagecreatefromjpeg($backgroundSource); $feedBurnerStats = imagecreatefromjpeg($feedBurnerStatsSource
PHP GD image convolution
<?php $image = imagecreatefromjpeg('images.jpg'); $emboss = array(array(2, 0, 0), array(0, -1, 0), array(0, 0, -1)); imageconvolution($image, $emboss, 1, 127); header('Content-Type: image/jpeg'); imagejpeg($image
PHP GD fill image
<?php $im = imagecreatetruecolor(55, 30); $white = imagecolorallocate($im, 255, 255, 255); imagefilledrectangle($im, 4, 4, 50, 25, $white); imagejpeg($im, 'imagefilledrectangle.jpg'); echo("Image filled
PHP GD font size
<?php header ("Content-type: image/png"); $handle = ImageCreate (130, 50) or die ("Cannot Create image"); $bg_color = ImageColorAllocate ($handle, 255, 0, 0); $txt_color = ImageColorAllocate
PHP GD filters
<?php try{ if(!$image=imagecreatefromjpeg('images.jpg')){ throw new Exception('Error creating image'); } if(!imagefilter($image,IMG_FILTER_COLORIZE,255,0,0)){ throw new Exception(" Can't filter image"); } header
PHP GD image filter
<?php $logo1 = imagecreatefromjpeg('images.jpg'); $logo2 = imagecreatefromjpeg('images.jpg'); $output = imagecreatetruecolor(imagesx($logo1) * 2, imagesy($logo1)); imagefilter($logo1, IMG_FILTER_PIXELATE, 3); imagefilter
PHP GD imagettftext
<?php header('Content-type: image/png'); $im = imagecreatetruecolor(400, 30); $white = imagecolorallocate($im, 255, 255, 255); $grey = imagecolorallocate($im, 128, 128, 128); $black = imagecolorallocate($im, 0, 0
PHP GD bold text
<?php header('Content-type: image/png'); $image = imagecreatetruecolor(400, 30); $red = imagecolorallocate($image, 255, 0, 0); $grey = imagecolorallocate($image, 128, 128, 128); $black = imagecolorallocate($image
PHP GD draw text
<?php header('Content-type: image/png'); $im = imagecreatetruecolor(400, 30); $white = imagecolorallocate($im, 255, 255, 255); $grey = imagecolorallocate($im, 128, 128, 128); $black = imagecolorallocate($im, 0, 0
PHP GD watermark an Image
<?php ini_set("display_errors", "1"); error_reporting(E_ALL); $image_src = 'images.jpg'; $watermark_src = 'watermark.jpg'; $opacity = 30; $padding = 20; $image = imagecreatefromjpeg($image_src
PHP GD art
<?php $width=200; $height=200; Header("Content-type: image/jpeg"); $im = imagecreate($width,$height); $white=ImageColorAllocate($im,255,255,255); $blue=ImageColorAllocate($im,1,18,250); $red=ImageColorAllocate
PHP GD Grayscale
<?php $file = 'images.jpg'; header('Content-type: image/jpeg'); list($width, $height) = getimagesize($file); $source = imagecreatefromjpeg($file); $bwimage= imagecreate($width, $height); for ($c=0;$c<256;$c
PHP GD graphics
<?php $img = imagecreate(250,80); $black = imagecolorallocate($img, 0, 0, 0); $white = imagecolorallocate($img, 255, 255, 255); $red = imagecolorallocate($img, 255, 0, 0); $green = imagecolorallocate($img, 0, 255
PHP GD Draw Rectangle
<?php header("Content-type: image/jpeg"); $width = 350; $height = 360; $im = ImageCreateTrueColor($width, $height); ImageAntiAlias($im, true); $white = ImageColorAllocate($im, 255, 255, 255
PHP GD circle
<?php $text = "RoseindiaRoseindiaRoseindiaRoseindiaRoseindia "; $image = imagecreatetruecolor(400,400); $white = imagecolorallocate($image,255,255,255); imagefill($image,0,0,$white); $red = imagecolorallocate
PHP GD Create Thumbnail
<?php $i = new imagethumbnail(); $i->open("index.jpg"); $i->setX(100); header("Content-type: image/jpeg;"); $i->imagejpeg(); class imagethumbnail { var $filename; var $x; var $y; var $image
PHP GD Punch
<?php $image = imagecreatefromjpeg("images.jpg"); $displacement = displacement($image); $image = imagedisplace($image,$displacement); header("Content-type: image/jpeg"); imagejpeg($image); imagedestroy
how to implement Single Sign On in enterprise application using spring framework
how to implement Single Sign On in enterprise application using spring framework  how i can implement the single sign on in my spring based web app..i am new to spring frame work..any help will be appreciated as its urgent
Advertisements
 

 

 

DMCA.com