Online PHP editor | perf for J9KbI

<?php // LAB 6 - PHP Exercises Combined ?> <!DOCTYPE html> <html> <head> <title>Lab 6 PHP Exercises</title> <style> .blue-text { color: blue; font-size: 14px; } table, th, td { border: 1px solid black; border-collapse: collapse; padding: 5px; } </style> </head> <body> <h2>Exercise 1</h2> <?php // Exercise 1: Change paragraph content from "HTML" to "JavaScript" $para = "HTML"; if(isset($_POST['change_text'])) { $para = "JavaScript"; } ?> <p><?php echo $para; ?></p> <form method="post"> <button name="change_text">Change Text</button> </form>  <h2>Exercise 2</h2> <?php // Exercise 2: Change style of paragraph with "JavaScript" $js_text = "JavaScript"; ?> <p class="blue-text"><?php echo $js_text; ?></p>  <h2>Exercise 3</h2> <?php // Exercise 3: Random number guess $message = ""; $rand = rand(1,10); if(isset($_POST['guess'])) { $user_guess = intval($_POST['user_guess']); $message = ($user_guess == $rand) ? "Good Work" : "Not matched (Answer was $rand)"; } ?> <form method="post"> <input type="number" name="user_guess" min="1" max="10" required> <button name="guess">Guess</button> </form> <p><?php if(isset($message)) echo $message; ?></p>  <h2>Exercise 4</h2> <?php // Exercise 4: Multiplication and division $result = ""; if(isset($_POST['calc'])) { $num1 = floatval($_POST['num1']); $num2 = floatval($_POST['num2']); $result = "Multiplication: ".($num1*$num2).", Division: ".($num2!=0 ? $num1/$num2 : "Cannot divide by zero"); } ?> <form method="post"> <input type="number" name="num1" step="any" placeholder="Number 1" required> <input type="number" name="num2" step="any" placeholder="Number 2" required> <button name="calc">Calculate</button> </form> <p><?php if(isset($result)) echo $result; ?></p>  <h2>Exercise 5</h2> <?php // Exercise 5: Temperature conversion function c_to_f($c){ return ($c*9/5)+32; } function f_to_c($f){ return ($f-32)*5/9; } $temp_result = ""; if(isset($_POST['convert_temp'])) { $temp = floatval($_POST['temp']); $unit = $_POST['unit']; if($unit=="C") $temp_result = "$temp °C = ".c_to_f($temp)." °F"; else $temp_result = "$temp °F = ".f_to_c($temp)." °C"; } ?> <form method="post"> <input type="number" name="temp" step="any" required> <select name="unit"> <option value="C">Celsius</option> <option value="F">Fahrenheit</option> </select> <button name="convert_temp">Convert</button> </form> <p><?php if(isset($temp_result)) echo $temp_result; ?></p>  <h2>Exercise 6</h2> <?php // Exercise 6: Angle type $angle_result = ""; if(isset($_POST['check_angle'])) { $angle = floatval($_POST['angle']); if($angle>0 && $angle<90) $angle_result = "Acute angle"; elseif($angle==90) $angle_result = "Right angle"; elseif($angle>90 && $angle<180) $angle_result = "Obtuse angle"; elseif($angle==180) $angle_result = "Straight angle"; else $angle_result = "Invalid angle"; } ?> <form method="post"> <input type="number" name="angle" min="0" max="180" required> <button name="check_angle">Check Angle</button> </form> <p><?php if(isset($angle_result)) echo $angle_result; ?></p>  <h2>Exercise 7</h2> <?php // Exercise 7: Reverse bits $rev_bits = ""; if(isset($_POST['rev_bits'])) { $num = intval($_POST['num_bits']); $bin = decbin($num); $rev_bin = strrev($bin); $rev_bits = bindec($rev_bin); } ?> <form method="post"> <input type="number" name="num_bits" required> <button name="rev_bits">Reverse Bits</button> </form> <p><?php if(isset($rev_bits)) echo "Reversed: ".$rev_bits; ?></p>  <h2>Exercise 8</h2> <?php // Exercise 8: Sum of cubes $sum_cubes = ""; if(isset($_POST['sum_cubes'])) { $n = intval($_POST['num_cubes']); $sum = 0; for($i=1;$i<=$n;$i++) $sum += $i**3; $sum_cubes = "Sum of cubes = ".$sum; } ?> <form method="post"> <input type="number" name="num_cubes" required> <button name="sum_cubes">Calculate Sum of Cubes</button> </form> <p><?php if(isset($sum_cubes)) echo $sum_cubes; ?></p>  <h2>Exercise 9</h2> <?php // Exercise 9: Form validation with PHP $nameErr = $emailErr = $genderErr = $commentErr = ""; $name = $email = $gender = $comment = ""; if(isset($_POST['submit_form'])) { if(empty($_POST['name']) || !preg_match("/^[a-zA-Z ]*$/",$_POST['name'])) $nameErr="Invalid Name"; else $name=$_POST['name']; if(empty($_POST['email']) || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) $emailErr="Invalid Email"; else $email=$_POST['email']; if(empty($_POST['gender'])) $genderErr="Select Gender"; else $gender=$_POST['gender']; if(strlen($_POST['comment'])>256) $commentErr="Comment too long"; else $comment=$_POST['comment']; } ?> <form method="post"> Name: <input type="text" name="name" required> <span><?php echo $nameErr; ?></span><br> Email: <input type="email" name="email" required> <span><?php echo $emailErr; ?></span><br> Website: <input type="text" name="website"><br> Comment: <textarea name="comment"></textarea> <span><?php echo $commentErr; ?></span><br> Gender: <input type="radio" name="gender" value="Female"> Female <input type="radio" name="gender" value="Male"> Male <input type="radio" name="gender" value="Other"> Other <span><?php echo $genderErr; ?></span><br> <button name="submit_form">Submit</button> </form> <p>Your Input: <?php echo "$name, $email, $gender, $comment"; ?></p>  <h2>Exercise 10</h2> <?php // Exercise 10: Course Evaluation Form if(isset($_POST['evaluate'])) { $sname = $_POST['sname']; $semail = $_POST['semail']; $edate = $_POST['edate']; $topic = $_POST['topic']; $rate = $_POST['rate']; if(empty($sname) || empty($semail)) { echo "<p>Name and Email are required!</p>"; } else { echo "<table>"; echo "<tr><th>Student Name</th><td>$sname</td></tr>"; echo "<tr><th>Student Email</th><td>$semail</td></tr>"; echo "<tr><th>Date</th><td>$edate</td></tr>"; echo "<tr><th>Favourite Topic</th><td>$topic</td></tr>"; echo "<tr><th>Rate</th><td>$rate</td></tr>"; echo "</table>"; } } ?> <form method="post"> Student Name: <input type="text" name="sname" required><br> Student Email: <input type="email" name="semail" required><br> Evaluation Date: <input type="datetime-local" name="edate" required><br> Favourite Topic: <select name="topic"> <option>HTML</option> <option>CSS</option> <option>JavaScript</option> <option>PHP-MySQL</option> </select><br> Rate 1-5: <input type="number" name="rate" min="1" max="5" required><br> <button name="evaluate">Evaluate</button> </form> </body> </html>

Version	System time (s)	User time (s)	Memory (MiB)
8.5.3	0.023	0.005	16.80
8.5.2	0.014	0.005	16.71
8.5.1	0.023	0.007	16.60
8.5.0	0.011	0.008	16.67
8.4.18	0.029	0.011	19.80
8.4.17	0.034	0.008	19.95
8.4.16	0.030	0.012	19.76
8.4.15	0.033	0.009	19.81
8.4.14	0.039	0.010	17.63
8.4.13	0.034	0.006	17.95
8.4.12	0.040	0.005	17.71
8.4.11	0.036	0.010	17.95
8.4.10	0.036	0.013	17.96
8.4.9	0.030	0.003	17.75
8.4.8	0.039	0.008	17.93
8.4.7	0.034	0.010	17.86
8.4.6	0.038	0.004	18.09
8.4.5	0.022	0.008	18.00
8.4.4	0.039	0.010	17.66
8.4.3	0.033	0.013	17.37
8.4.2	0.040	0.008	17.50
8.4.1	0.032	0.012	17.66
8.3.30	0.008	0.010	18.62
8.3.29	0.032	0.008	18.36
8.3.28	0.032	0.008	18.46
8.3.27	0.035	0.007	16.86
8.3.26	0.040	0.006	16.90
8.3.25	0.028	0.006	16.87
8.3.24	0.022	0.006	16.84
8.3.23	0.029	0.008	16.86
8.3.22	0.035	0.005	16.84
8.3.21	0.036	0.009	16.78
8.3.20	0.017	0.004	16.85
8.3.19	0.018	0.002	16.86
8.3.18	0.033	0.008	16.84
8.3.17	0.027	0.003	16.79
8.3.16	0.022	0.003	16.81
8.3.15	0.019	0.003	16.72
8.3.14	0.020	0.002	16.70
8.3.13	0.029	0.006	16.73
8.3.12	0.021	0.006	16.79
8.3.11	0.019	0.003	16.56
8.3.10	0.020	0.006	16.70
8.3.9	0.025	0.006	16.56
8.3.8	0.035	0.009	16.86
8.3.7	0.026	0.003	16.78
8.3.6	0.020	0.004	16.91
8.3.5	0.022	0.003	16.62
8.3.4	0.023	0.004	17.98
8.3.3	0.030	0.005	17.91
8.3.2	0.024	0.008	18.09
8.3.1	0.030	0.008	18.09
8.3.0	0.024	0.012	17.96