Add exams from exam156 to exam199

exam156/generate.php

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+<?php
+header('Content-type: image/jpeg');
+
+$mysql_host = 'localhost';
+$mysql_user = 'example_user';
+$mysql_pass = 'Kolosnjaj4321!';
+$mysql_db = 'example_database';
+$con = mysqli_connect($mysql_host, $mysql_user, $mysql_pass);
+mysqli_select_db($con, $mysql_db);
+
+if (isset($_GET['id'])) {
+    $id = $_GET['id'];
+
+    $query = mysqli_query($con, "SELECT `email` FROM `users` WHERE `id` ='" . mysqli_real_escape_string($con, $id) . "'");
+    if (mysqli_num_rows($query) >= 1) {
+        $query_result = mysqli_fetch_assoc($query);
+        $email = $query_result['email'];
+    } else {
+        $email = 'ID not found';
+    }
+} else {
+    $email = 'No id specified.';
+}
+$email_length = strlen($email);
+
+$font_size = 4;
+
+$image_height = imagefontheight($font_size);
+$image_width = imagefontwidth($font_size) * $email_length;
+
+$image = imagecreate($image_width, $image_height); // Stvaranje prazne slike
+
+imagecolorallocate($image, 255, 255, 255); // boja pozadine podesena na belo
+$font_color = imagecolorallocate($image, 0, 0, 0); // boja fonta podesena na belo
+
+imagestring($image, $font_size, 0, 0, $email, $font_color);
+imagejpeg($image);

exam156/index.php

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+Name:<br>
+Alex <br><br>
+Email:<br>
+<img src="generate.php?id=2">