Create captcha php file to create a random image

Author: Max Base

captcha.php

@@ -0,0 +1,94 @@
+<?php
+// Max Base
+// https://github.com/BaseMax/PHPNiceCaptcha
+session_start();
+define("BASE", __DIR__ . "/");
+require_once "_core.php";
+$debug=false;
+$font_path = "/var/www/html/matno3/2.ttf";
+// $font_path = "/usr/share/nginx/html/" . $_GET["font"]. ".ttf";
+// arial.ttf";
+// $debug=true; // Never not use this in public domain or place! IT'S YOUR RISK!
+
+if(!isset($_GET["code"])) {
+	exit();
+}
+$code=$_GET["code"];
+$count=$db->count("captcha", ["codes"=>$code]);
+if($count == 0) {
+	exit();
+}
+$captcha=$db->select("captcha", ["codes"=>$code]);
+$width=640;
+$height=480;
+$codeLength=4;
+$chars="123456789";
+$lineInPart=2;
+$CircleInPart=3;
+$lineInAll=4;
+$CircleInAll=6;
+$code=$captcha["code"];
+$_SESSION["captcha"]=$code;
+if($debug == true && isset($_GET['code'])) {
+	$code=$_GET['code'];
+}
+$image = imagecreatetruecolor($width, $height);
+$cHeight=$height;
+$cWidth=$width / $codeLength;
+imageantialias($image, true);
+$colors=[
+	#16F292, rgb(22,242,146)
+	//imagecolorallocate($image, 22,242,146),
+	#b6177b, rgb(182,23,123)
+	//imagecolorallocate($image, 182,23,123),
+	#3a2b00, rgb(58,43,0)
+	//imagecolorallocate($image, 58,43,0),
+	#9f1435, rgb(159,20,53)
+	//imagecolorallocate($image, 159,20,53),
+
+	randColor(),
+	randColor(),
+	randColor(),
+	randColor(),
+];
+$white = imagecolorallocate($image, 255, 255, 255);
+$black = imagecolorallocate($image, 0, 0, 0);
+function randColor() {
+	global $image;
+	return imagecolorallocate($image, rand(0, 95), rand(0, 95), rand(0, 95));
+}
+for($i=0;$i<$codeLength;$i++) {
+	$x1=$i * $cWidth;
+	$y1=0;
+	$x2=$x1 + $cWidth;
+	$y2=$cHeight;
+	imagefilledrectangle($image, $x1, $y1, $x2, $y2, $colors[$i]);
+	$text = $code[$i];
+	imagettftext($image, 65, rand(0, 80), $x1 + rand(60, 90), rand(80, $height-30), randColor(), $font_path, $text);
+	for($li=0;$li<$lineInPart;$li++) {
+		// drawLine
+		$textColor=$colors[$i];
+		while($textColor == $colors[$i]) {
+			$textColor=randColor();
+		}
+		imageline($image, $x1+rand(-7, 10), rand(10, $height-5), $x2-rand(5,10), rand(10, $height-5), $textColor);
+	}
+	for($ci=0;$ci<$CircleInPart;$ci++) {
+		// drawCircle
+		$color=imagecolorallocate($image, rand(0,190), rand(0,190), rand(0,190));
+		$size=rand(7,10);
+		imagefilledellipse($image, $x1+rand(-7, 10), rand(10, $height-5), $size, $size, randColor());
+	}
+}
+for($li=0;$li<$lineInAll;$li++) {
+	// drawLine
+	imageline($image, rand(-7, $width), rand(10, $height-5), $x2-rand(5,10), rand(10, $height-5), randColor());
+}
+for($ci=0;$ci<$CircleInAll;$ci++) {
+	// drawCircle
+	$color=imagecolorallocate($image, rand(0,190), rand(0,190), rand(0,190));
+	$size=rand(7,15);
+	imagefilledellipse($image, rand(-7, $width-20), rand(10, $height-5), $size, $size, randColor());
+}
+header("Content-type: image/png");
+imagepng($image);