adding capatcha class and demo file

phpcodertop · web-flow · commit 34d127cd4c9c · 2016-09-03T21:28:15.000+02:00
diff --git a/captcha/captcha.php b/captcha/captcha.php
@@ -0,0 +1,45 @@
+<?php 
+	session_start();
+/**
+* PHP CAPTCHA CLASS 
+* WRITTEB BY : SEMICOLON
+* AHMED MAHER HALIMA
+* https://www.facebook.com/ahmedmaherhalima
+**/
+/**
+* 
+*/
+class Captcha 
+{
+	public $img;
+	public $txtCol;
+	public $fontSize = 40;
+	public $imageWidth = 80;
+	public $imageHeight = 20;
+	public $string;
+
+	public function createImg(){
+		$this->img = imagecreate($this->imageWidth, $this->imageHeight);
+		imagecolorallocate($this->img, 255, 255, 255);
+		$this->txtCol = imagecolorallocate($this->img, 0, 0, 0);
+		//draw lines on image 
+		for($i = 0; $i <= 30; $i++ ){
+			$x1 = rand(1,100);
+			$y1 = rand(1,100);
+			$x2 = rand(1,100);
+			$y2 = rand(1,100);
+			imageline($this->img, $x1, $y1, $x2, $y2,$this->txtCol);
+		}
+		// add captcha string to image
+		$this->string = md5(microtime());
+		$this->string = substr($this->string, 0 , 6);
+		$_SESSION['secret'] = $this->string;
+		imagestring($this->img, $this->fontSize, 0, 0, $this->string, $this->txtCol);
+		imagepng($this->img);
+	} // end createImg function
+
+}
+
+$captcha = new Captcha();
+$captcha->createImg();
+?>
diff --git a/captcha/index.php b/captcha/index.php
@@ -0,0 +1,28 @@
+<?php
+//usage of the class 
+
+//confirmation
+session_start();
+	if (isset($_POST['check'])) {
+		if(!empty($_POST['input']) && $_POST['input'] == $_SESSION['secret']){
+			echo 'good';
+		}else{
+			echo 'wrong';
+		}	
+	}
+ ?>
+<!DOCTYPE html>
+<html>
+<head>
+	<title>captcha</title>
+</head>
+<body>
+<img src="captcha.php" /> <br />
+enter the captcha : 
+<form method="post">
+<input type="text" name="input">
+<input type="submit" name="check" value="submit" />
+</form>
+
+</body>
+</html>
