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Рабочая капча - Полезный php код №84
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Код:
<?php include_once 'sys/inc/start.php'; include_once 'sys/inc/sess.php'; include_once 'sys/inc/home.php'; // Set the header header("Content-type: image/png"); $text = mt_rand(10000, 99999); // Explode the letters into separate array elements $letters = str_split($text); // Store the generated code into the _SESSION captcha $_SESSION['captcha'] = $text; // Define the Image Height & Width $width = 100; $height = 40; // Create the Image $image = imagecreate($width, $height); // Set the background color $black = imagecolorallocate($image, 255, 255, 255); // Set the text color $white = imagecolorallocate($image, 0, 0, 0); $lg_color = mt_rand(130, 160); $light_gray = imagecolorallocate($image, $lg_color, $lg_color, $lg_color); // Set the font size $font_size = 1; // Draw background circles for ($i = 0; $i < 1; $i++) { // The outside circle diameter $outside = 60 - $i * 20; // The inside circle diamater $inside = 59 - $i * 20; // Randomize the horizontal position and vertical position $oc = array(mt_rand(30, 40), mt_rand(10, 20)); // Draw the outer circle imagefilledellipse($image, $oc[0], $oc[1], $outside, $outside, $white); // Draw the inner circle imagefilledellipse($image, $oc[0], $oc[1], $inside, $inside, $black); } // Generate noise for ($noise = 0; $noise <= 15; $noise++) { $x = mt_rand(10, $width - 10); $y = mt_rand(10, $height - 10); imageline($image, $x, $y, $x, $y, $white); } function generateStars($image, $color, $repeat_x, $repeat_y) { $ry = mt_rand(3, 6); $one_y = $ry - 2; $two_y = $ry - 1; $three_y = $ry; for ($x = 1; $x <= $repeat_y; $x++) { $one_x = $ry - 2; $two_x = $ry - 1; $three_x = $ry; // Generate horizontal lines for ($n = 1; $n <= $repeat_x; $n++) { imageline($image, $one_x, $one_y, $one_x, $one_y, $color); imageline($image, $three_x, $three_y, $three_x, $three_y, $color); imageline($image, $three_x, $one_y, $three_x, $one_y, $color); imageline($image, $one_x, $three_y, $one_x, $three_y, $color); imageline($image, $two_x, $two_y, $two_x, $two_y, $color); $one_x = $one_x + 8; $two_x = $two_x + 8; $three_x = $three_x + 8; } $one_y = $one_y + 8; $two_y = $two_y + 8; $three_y = $three_y + 8; } } generateStars($image, $light_gray, 15, 5); // Letter position $position = array(15, 25, 35, 45, 55, 65); for ($m = $i = 0; $i < count($letters); $i++) { // Generate an rgb random value, from light gray to white $color = rand(0, 150); // Output the letters imagettftext($image, 20, 0, $position[$i] + $m, mt_rand(($height / 2), ($height / 2) + 15), imagecolorallocate($image, $color, $color, $color), H . 'sys/fonts/arial.ttf', $letters[$i]); $m += 5; } // Generate random vertical and horizontal lines imageline($image, 0, mt_rand(10, $height - 10), $width, mt_rand(10, $height - 10), $light_gray); imageline($image, mt_rand(15, $width - 15), 0, 0, mt_rand(15, $width - 15), $light_gray); // Output the $image, don't save the file name, set quality imagepng($image, null, 0);
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