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207 lines
8.6 KiB
207 lines
8.6 KiB
7 years ago
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<?php
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class Captcha {
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protected $code;
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protected $height = 40;
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protected $width = 180;
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protected $numChar = 6;
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protected $background = 'black';
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function __construct($width = NULL, $height = NULL, $numChar = 6, $background = 'black') {
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$this->numChar = $numChar;
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$this->background = $background;
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$pos = 'ABCDEFGHJKLMNOPQRSTUWVXZ0123456789abcdefhijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUWVXZ0123456789';
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for($i = 0; $i < $this->numChar; $i++) {
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$this->code .= substr($pos, mt_rand(0, strlen($pos)-1), 1);
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}
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/*if (function_exists('token')) {
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$this->code = substr(token(100), rand(0, 94), $this->numChar);
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} else {
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$this->code = substr(sha1(mt_rand()), 17, $this->numChar);
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}*/
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$this->width = ($width != NULL) ? $width : $this->width;
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$this->height = ($height != NULL) ? $height : $this->height;
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}
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function getCode(){
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return $this->code;
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}
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function showImage($format = 'png') {
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$image = imagecreatetruecolor($this->width, $this->height);
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$width = imagesx($image);
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$height = imagesy($image);
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$black = imagecolorallocate($image, 33, 33, 33);
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$white = imagecolorallocate($image, 255, 255, 255);
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$red = imagecolorallocatealpha($image, 255, 0, 0, 50);
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$green = imagecolorallocatealpha($image, 0, 255, 0, 75);
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$blue = imagecolorallocatealpha($image, 0, 0, 255, 50);
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$orange = imagecolorallocatealpha($image, 255, 136, 0, 50);
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$yellow = imagecolorallocatealpha($image, 255, 255, 0, 50);
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$punyWhite = imagecolorallocatealpha($image, 255, 255, 255, 40);
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$varYellow = imagecolorallocatealpha($image, 255, 255, 0, rand(30,100));
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$varBlue = imagecolorallocatealpha($image, 0, 0, 255, rand(30,100));
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$varBlack = imagecolorallocatealpha($image, 33, 33, 33, rand(85,95));
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$pureYellow = imagecolorallocate($image, 255, 255, 0);
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$pureGreen = imagecolorallocate($image, 0, 255, 0);
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$softGreen = imagecolorallocate($image, 153, 241, 197);
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$softBlue = imagecolorallocate($image, 180, 225, 245);
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$softpink = imagecolorallocate($image, 250, 165, 215);
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$pureRed = imagecolorallocate($image, 250, 0, 0);
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$strongGreen = imagecolorallocate($image, 95, 115, 75);
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$pureBlue = imagecolorallocate($image, 0, 0, 215);
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$pureorange = imagecolorallocate($image, 255, 135, 0);
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$strangePurple = imagecolorallocate($image, 0, 80, 90);
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/*$pureBlue = imagecolorallocate($image, 200, 100, 245);*/
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switch($this->background) {
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case 'black':
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$fontColors = array($white, $pureYellow, $pureGreen, $softBlue, $softGreen, $softpink);
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imagefilledrectangle($image, 0, 0, $width, $height, $black);
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break;
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case 'white':
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$fontColors = array($black, $pureRed, $strongGreen, $pureBlue, $pureorange, $strangePurple);
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imagefilledrectangle($image, 0, 0, $width, $height, $white);
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break;
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}
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if(rand(0,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $red);
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} else {
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imagefilledrectangle($image, ceil(rand(5, $this->width)), ceil(rand(5, $this->height)), ceil(rand(5, $this->width)), ceil(rand(5, $this->height)), $red);
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}
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if(rand(1,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $green);
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} else {
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imagefilledrectangle($image, ceil(rand(5, 145)), ceil(rand(0, 35)), ceil(rand(5, 175)), ceil(rand(0, 40)), $green);
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}
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if(rand(1,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $varBlue);
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} else {
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imagefilledrectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $varBlue);
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}
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if(rand(1,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $orange);
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} else {
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imagefilledrectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $orange);
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}
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if(rand(1,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $yellow);
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} else {
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imagefilledrectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $yellow);
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}
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imagefilledrectangle($image, 0, 0, $width, 0, $black);
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imagefilledrectangle($image, $width - 1, 0, $width - 1, $height - 1, $black);
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imagefilledrectangle($image, 0, 0, 0, $height - 1, $black);
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imagefilledrectangle($image, 0, $height - 1, $width, $height - 1, $black);
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$qualfonte = __DIR__."/18.gdf";
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//Carregar uma nova fonte
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$fonteCaptcha = imageloadfont($qualfonte);
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//imagestring($image, $fonteCaptcha, intval(($width - (strlen($this->code) * 6)) / 16), intval(($height - 15) / 4), $this->code, $white);
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$txt = str_split($this->code);
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$space = ($this->width-10) / $this->numChar;
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foreach($txt as $key => $character) {
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$y = ceil(rand(0, $this->height - ($this->height - ($this->height -30))));
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$divisor = 1;
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$plus = 10;
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$incre = 0;
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switch ($key) {
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case "0":
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$x = ceil(rand(0, $space-$plus));
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break;
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case "1":
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*2));
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break;
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case "2":
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*3));
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break;
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case "3":
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*4));
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break;
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case "4":
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*5));
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break;
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case "5":
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*5+$space/2));
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break;
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default:
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$x = ceil(rand($x+$incre/$divisor+$plus, $space*$key+$space/2));
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break;
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}
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imagechar ( $image , $fonteCaptcha , $x , $y, $character , $fontColors[rand(0,count($fontColors)-1)]);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $red);
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} else {
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imagerectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $red);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $green);
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} else {
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imageline($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $green);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $blue);
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} else {
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imagerectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $blue);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $orange);
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} else {
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imageline($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $orange);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $varYellow);
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} else {
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imageline($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $varYellow);
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}
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if(rand(1,2) == 2) {
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imageellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $punyWhite);
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} else {
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imageline($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $punyWhite);
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}
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if(rand(1,2) == 2) {
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imagefilledellipse($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), 30, 30, $varBlack);
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} else {
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imagefilledrectangle($image, ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), ceil(rand(5, $this->width)), ceil(rand(0, $this->height)), $varBlack);
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}
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//imagearc ( $image , ceil(rand(5, $this->width)) , ceil(rand(0, $this->height)) ,ceil(rand(5, $this->width)) , ceil(rand(0, $this->height)), ceil(rand(5, $this->width))/ceil(rand(5, $this->height)) , ceil(rand(5, $this->height))/ceil(rand(0, $this->width)) , $pureYellow );
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header('Cache-Control: no-cache');
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if($format == 'jpeg' || $format == 'jpg') {
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header('Content-type: image/jpeg');
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imagejpeg($image);
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} elseif ($format == 'png') {
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header('Content-type: image/png');
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imagepng($image);
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} elseif ($format == 'bmp' || $format == 'bitmap') {
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header('Content-type: image/bmp');
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imagebmp($image);
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} elseif ($format == 'gif' || $format == 'giff') {
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header('Content-type: image/gif');
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imagegif($image);
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} elseif ($format == 'wbmp') {
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header('Content-type: image/vnd.wap.wbmp');
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imagewbmp($image);
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}
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imagedestroy($image);
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}
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}
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?>
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