How to save captcha image string onto the session for validation?
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I am currently working on a registration form that will require a captcha string validation in order to proceed to the next step. I have managed to make a working captcha generator but I am unsure as how to save the generated string as it's own and then saving it onto the users sessions.
The following code is the PHP code for the captcha generator
<?php
# Read background image
$image = ImageCreateFromPng ("captcha100x40.png");
# Randomise the text colour
$red = rand(80,130);
$green = rand(80,130);
$blue = 320 -$red - $green;
$textColour = ImageColorAllocate($image, $red, $green, $blue);
# Randomly select a character string
$charArray = array('a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','T','U','V','W','X','Y','Z','2','3','4','6','7','8','9');
shuffle($charArray);
$captchaString = $charArray[0];
for ($i=1; $i<5; $i++) $captchaString .= ' ' . $charArray[$i];
# Edit the image
ImageString($image, 5, 10, 10, $captchaString, $textColour);
# Enlarge the image
$bigImage = imagecreatetruecolor(200, 80);
imagecopyresized($bigImage, $image, 0, 0, 0, 0, 200, 80, 100, 40);
# Output the image as a low quality JPEG
header("Content-Type: image/jpeg");
Imagejpeg($bigImage, NULL, 8);
# clean up
ImageDestroy($image);
ImageDestroy($bigImage);
?>
The following code under is the code used for the registration form.
<?php
session_start();
$_SESSION['message'] == '';
$mysqli = new mysqli('*IPADDRESS*', '*USERNAME*', '*PASSWORD*', '*DATABASENAME*');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
//two passwords are equal to each other
if ($_POST['password'] == $_POST['confirmpassword']) {
$username = $mysqli->real_escape_string($_POST['username']);
$email = $mysqli->real_escape_string($_POST['email']);
$skills = $mysqli->real_escape_string($_POST['skills']);
$password = md5($_POST['password']); //md5 hash password security
}
}
?>
<!DOCTYPE html>
<html>
<head>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="registrationForm.css">
<style>body {
font-family: 'Roboto', sans-serif;
font-size: 20px;
}</style>
<title>Registration Form</title>
</head>
<body>
<form class="form" action="registrationForm.php" method="post" style="border:1px solid #ccc">
<div class="alert error"><?= $_SESSION['message'] ?></div>
<div class="container">
<h1>Registration</h1>
<p>Please fill in this form to create an account.</p>
<hr>
<label for="username"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="username" required>
<br>
<label for="email"><b>Email</b></label>
<input type="text" placeholder="Enter Email" name="email" required>
<br>
<label for="password"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="password" required>
<br>
<label for="confirmpassword"><b>Repeat Password</b></label>
<input type="password" placeholder="Repeat Password" name="confirmpassword" required>
<br>
<label for="skills"><b>Skills</b></label>
<input type="text" placeholder="E.G., plumbing,teaching, programming, etc" name="skills" required>
<br>
<label for="captcha"><b>Complete CAPTCHA</b></label>
<br>
<div class="captcha">
<img src="captcha.php" alt="CAPTCHA image"/>
</div>
<br>
<input type="text" name=captcha required>
<label>
<input type="checkbox" checked="checked" name="remember" style="margin-bottom:15px"> Remember me
</label>
<p>By creating an account you agree to our <a href="#" style="color:dodgerblue">Terms & Privacy</a>.</p>
<div class="clearfix">
<button type="button" class="cancelbtn">Cancel</button>
<button type="submit" class="signupbtn">Sign Up</button>
</div>
</div>
</form>
</body>
</html>
php html html5
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
add a comment |
0
I am currently working on a registration form that will require a captcha string validation in order to proceed to the next step. I have managed to make a working captcha generator but I am unsure as how to save the generated string as it's own and then saving it onto the users sessions.
The following code is the PHP code for the captcha generator
<?php
# Read background image
$image = ImageCreateFromPng ("captcha100x40.png");
# Randomise the text colour
$red = rand(80,130);
$green = rand(80,130);
$blue = 320 -$red - $green;
$textColour = ImageColorAllocate($image, $red, $green, $blue);
# Randomly select a character string
$charArray = array('a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','T','U','V','W','X','Y','Z','2','3','4','6','7','8','9');
shuffle($charArray);
$captchaString = $charArray[0];
for ($i=1; $i<5; $i++) $captchaString .= ' ' . $charArray[$i];
# Edit the image
ImageString($image, 5, 10, 10, $captchaString, $textColour);
# Enlarge the image
$bigImage = imagecreatetruecolor(200, 80);
imagecopyresized($bigImage, $image, 0, 0, 0, 0, 200, 80, 100, 40);
# Output the image as a low quality JPEG
header("Content-Type: image/jpeg");
Imagejpeg($bigImage, NULL, 8);
# clean up
ImageDestroy($image);
ImageDestroy($bigImage);
?>
The following code under is the code used for the registration form.
<?php
session_start();
$_SESSION['message'] == '';
$mysqli = new mysqli('*IPADDRESS*', '*USERNAME*', '*PASSWORD*', '*DATABASENAME*');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
//two passwords are equal to each other
if ($_POST['password'] == $_POST['confirmpassword']) {
$username = $mysqli->real_escape_string($_POST['username']);
$email = $mysqli->real_escape_string($_POST['email']);
$skills = $mysqli->real_escape_string($_POST['skills']);
$password = md5($_POST['password']); //md5 hash password security
}
}
?>
<!DOCTYPE html>
<html>
<head>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="registrationForm.css">
<style>body {
font-family: 'Roboto', sans-serif;
font-size: 20px;
}</style>
<title>Registration Form</title>
</head>
<body>
<form class="form" action="registrationForm.php" method="post" style="border:1px solid #ccc">
<div class="alert error"><?= $_SESSION['message'] ?></div>
<div class="container">
<h1>Registration</h1>
<p>Please fill in this form to create an account.</p>
<hr>
<label for="username"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="username" required>
<br>
<label for="email"><b>Email</b></label>
<input type="text" placeholder="Enter Email" name="email" required>
<br>
<label for="password"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="password" required>
<br>
<label for="confirmpassword"><b>Repeat Password</b></label>
<input type="password" placeholder="Repeat Password" name="confirmpassword" required>
<br>
<label for="skills"><b>Skills</b></label>
<input type="text" placeholder="E.G., plumbing,teaching, programming, etc" name="skills" required>
<br>
<label for="captcha"><b>Complete CAPTCHA</b></label>
<br>
<div class="captcha">
<img src="captcha.php" alt="CAPTCHA image"/>
</div>
<br>
<input type="text" name=captcha required>
<label>
<input type="checkbox" checked="checked" name="remember" style="margin-bottom:15px"> Remember me
</label>
<p>By creating an account you agree to our <a href="#" style="color:dodgerblue">Terms & Privacy</a>.</p>
<div class="clearfix">
<button type="button" class="cancelbtn">Cancel</button>
<button type="submit" class="signupbtn">Sign Up</button>
</div>
</div>
</form>
</body>
</html>
php html html5
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
add a comment |
0
0
0
I am currently working on a registration form that will require a captcha string validation in order to proceed to the next step. I have managed to make a working captcha generator but I am unsure as how to save the generated string as it's own and then saving it onto the users sessions.
The following code is the PHP code for the captcha generator
<?php
# Read background image
$image = ImageCreateFromPng ("captcha100x40.png");
# Randomise the text colour
$red = rand(80,130);
$green = rand(80,130);
$blue = 320 -$red - $green;
$textColour = ImageColorAllocate($image, $red, $green, $blue);
# Randomly select a character string
$charArray = array('a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','T','U','V','W','X','Y','Z','2','3','4','6','7','8','9');
shuffle($charArray);
$captchaString = $charArray[0];
for ($i=1; $i<5; $i++) $captchaString .= ' ' . $charArray[$i];
# Edit the image
ImageString($image, 5, 10, 10, $captchaString, $textColour);
# Enlarge the image
$bigImage = imagecreatetruecolor(200, 80);
imagecopyresized($bigImage, $image, 0, 0, 0, 0, 200, 80, 100, 40);
# Output the image as a low quality JPEG
header("Content-Type: image/jpeg");
Imagejpeg($bigImage, NULL, 8);
# clean up
ImageDestroy($image);
ImageDestroy($bigImage);
?>
The following code under is the code used for the registration form.
<?php
session_start();
$_SESSION['message'] == '';
$mysqli = new mysqli('*IPADDRESS*', '*USERNAME*', '*PASSWORD*', '*DATABASENAME*');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
//two passwords are equal to each other
if ($_POST['password'] == $_POST['confirmpassword']) {
$username = $mysqli->real_escape_string($_POST['username']);
$email = $mysqli->real_escape_string($_POST['email']);
$skills = $mysqli->real_escape_string($_POST['skills']);
$password = md5($_POST['password']); //md5 hash password security
}
}
?>
<!DOCTYPE html>
<html>
<head>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="registrationForm.css">
<style>body {
font-family: 'Roboto', sans-serif;
font-size: 20px;
}</style>
<title>Registration Form</title>
</head>
<body>
<form class="form" action="registrationForm.php" method="post" style="border:1px solid #ccc">
<div class="alert error"><?= $_SESSION['message'] ?></div>
<div class="container">
<h1>Registration</h1>
<p>Please fill in this form to create an account.</p>
<hr>
<label for="username"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="username" required>
<br>
<label for="email"><b>Email</b></label>
<input type="text" placeholder="Enter Email" name="email" required>
<br>
<label for="password"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="password" required>
<br>
<label for="confirmpassword"><b>Repeat Password</b></label>
<input type="password" placeholder="Repeat Password" name="confirmpassword" required>
<br>
<label for="skills"><b>Skills</b></label>
<input type="text" placeholder="E.G., plumbing,teaching, programming, etc" name="skills" required>
<br>
<label for="captcha"><b>Complete CAPTCHA</b></label>
<br>
<div class="captcha">
<img src="captcha.php" alt="CAPTCHA image"/>
</div>
<br>
<input type="text" name=captcha required>
<label>
<input type="checkbox" checked="checked" name="remember" style="margin-bottom:15px"> Remember me
</label>
<p>By creating an account you agree to our <a href="#" style="color:dodgerblue">Terms & Privacy</a>.</p>
<div class="clearfix">
<button type="button" class="cancelbtn">Cancel</button>
<button type="submit" class="signupbtn">Sign Up</button>
</div>
</div>
</form>
</body>
</html>
php html html5
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
I am currently working on a registration form that will require a captcha string validation in order to proceed to the next step. I have managed to make a working captcha generator but I am unsure as how to save the generated string as it's own and then saving it onto the users sessions.
The following code is the PHP code for the captcha generator
<?php
# Read background image
$image = ImageCreateFromPng ("captcha100x40.png");
# Randomise the text colour
$red = rand(80,130);
$green = rand(80,130);
$blue = 320 -$red - $green;
$textColour = ImageColorAllocate($image, $red, $green, $blue);
# Randomly select a character string
$charArray = array('a','b','c','d','e','f','g','h','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','T','U','V','W','X','Y','Z','2','3','4','6','7','8','9');
shuffle($charArray);
$captchaString = $charArray[0];
for ($i=1; $i<5; $i++) $captchaString .= ' ' . $charArray[$i];
# Edit the image
ImageString($image, 5, 10, 10, $captchaString, $textColour);
# Enlarge the image
$bigImage = imagecreatetruecolor(200, 80);
imagecopyresized($bigImage, $image, 0, 0, 0, 0, 200, 80, 100, 40);
# Output the image as a low quality JPEG
header("Content-Type: image/jpeg");
Imagejpeg($bigImage, NULL, 8);
# clean up
ImageDestroy($image);
ImageDestroy($bigImage);
?>
The following code under is the code used for the registration form.
<?php
session_start();
$_SESSION['message'] == '';
$mysqli = new mysqli('*IPADDRESS*', '*USERNAME*', '*PASSWORD*', '*DATABASENAME*');
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
//two passwords are equal to each other
if ($_POST['password'] == $_POST['confirmpassword']) {
$username = $mysqli->real_escape_string($_POST['username']);
$email = $mysqli->real_escape_string($_POST['email']);
$skills = $mysqli->real_escape_string($_POST['skills']);
$password = md5($_POST['password']); //md5 hash password security
}
}
?>
<!DOCTYPE html>
<html>
<head>
<link href="https://fonts.googleapis.com/css?family=Roboto" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="registrationForm.css">
<style>body {
font-family: 'Roboto', sans-serif;
font-size: 20px;
}</style>
<title>Registration Form</title>
</head>
<body>
<form class="form" action="registrationForm.php" method="post" style="border:1px solid #ccc">
<div class="alert error"><?= $_SESSION['message'] ?></div>
<div class="container">
<h1>Registration</h1>
<p>Please fill in this form to create an account.</p>
<hr>
<label for="username"><b>Username</b></label>
<input type="text" placeholder="Enter Username" name="username" required>
<br>
<label for="email"><b>Email</b></label>
<input type="text" placeholder="Enter Email" name="email" required>
<br>
<label for="password"><b>Password</b></label>
<input type="password" placeholder="Enter Password" name="password" required>
<br>
<label for="confirmpassword"><b>Repeat Password</b></label>
<input type="password" placeholder="Repeat Password" name="confirmpassword" required>
<br>
<label for="skills"><b>Skills</b></label>
<input type="text" placeholder="E.G., plumbing,teaching, programming, etc" name="skills" required>
<br>
<label for="captcha"><b>Complete CAPTCHA</b></label>
<br>
<div class="captcha">
<img src="captcha.php" alt="CAPTCHA image"/>
</div>
<br>
<input type="text" name=captcha required>
<label>
<input type="checkbox" checked="checked" name="remember" style="margin-bottom:15px"> Remember me
</label>
<p>By creating an account you agree to our <a href="#" style="color:dodgerblue">Terms & Privacy</a>.</p>
<div class="clearfix">
<button type="button" class="cancelbtn">Cancel</button>
<button type="submit" class="signupbtn">Sign Up</button>
</div>
</div>
</form>
</body>
</html>
php html html5
php html html5
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
edited Nov 16 '18 at 21:25
zeearebee
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
asked Nov 16 '18 at 15:51
zeearebeezeearebee
75
75
add a comment |
add a comment |
0
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