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image.php
result.php
<?php // Font directory + font name $font = 'fonts/Disney.ttf'; // Total number of lines $lineCount = 40; // Size of the font $fontSize = 40; // Height of the image $height = 50; // Width of the image $width = 150; $img_handle = imagecreate ($width, $height) or die ("Cannot Create image"); // Set the Background Color RGB $backColor = imagecolorallocate($img_handle, 255, 255, 255); // Set the Line Color RGB $lineColor = imagecolorallocate($img_handle, 175, 238, 238); // Set the Text Color RGB $txtColor = imagecolorallocate($img_handle, 135, 206, 235); // Do not edit below this point $string = "abcdefghijklmnopqrstuvwxyz0123456789"; $str = ""; for($i=0;$i<6;$i++){ $pos = rand(0,36); $str .= $string{$pos}; } $textbox = imagettfbbox($fontSize, 0, $font, $str) or die('Error in imagettfbbox function'); $x = ($width - $textbox[4])/2; $y = ($height - $textbox[5])/2; imagettftext($img_handle, $fontSize, 0, $x, $y, $txtColor, $font , $str) or die('Error in imagettftext function'); for($i=0;$i<$lineCount;$i++){ $x1 = rand(0,$width);$x2 = rand(0,$width); $y1 = rand(0,$width);$y2 = rand(0,$width); imageline($img_handle,$x1,$y1,$x2,$y2,$lineColor); } header('Content-Type: image/jpeg'); imagejpeg($img_handle,NULL,100); imagedestroy($img_handle); session_start(); $_SESSION['img_number'] = $str; ?>form.php
<form action="result.php" method="post"> <img alt="Random Number" src="image.php"> <input type="text" name="num"><br> <input type="submit" name="submit" value="Check"> </form>
result.php
<?php session_start(); if($_SESSION['img_number'] != $_POST['num']){ echo'The number you entered doesn\'t match the image.<br> <a href="form.php">Try Again</a><br>'; }else{ echo'The numbers Match!<br> <a href="form.php">Try Again</a><br>'; } ?> [url=http://wwww.com/examples/CAPTCHA/form2.php]Example[/url]