emailjohnthomascaballero/form.php

## form.php
<!-- SOURCE: https://www.w3schools.com/php/php_form_validation.asp -->

<!--
LOGIC:
htmlspecialchars() - prevent Cross-Site Scripting (XSS) attacks.
trim() - Strip unnecessary characters (extra space, tab, newline).
stripslashes() - Remove backslashes (\).
-->

<!-- SCRIPT -->
<!DOCTYPE HTML>
<html>
<head>
</head>
<body>

<?php
// define variables and set to empty values
$name = $email = $gender = $comment = $website = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $name = test_input($_POST["name"]);
  $email = test_input($_POST["email"]);
  $website = test_input($_POST["website"]);
  $comment = test_input($_POST["comment"]);
  $gender = test_input($_POST["gender"]);
}

function test_input($data) {
  $data = trim($data);
  $data = stripslashes($data);
  $data = htmlspecialchars($data);
  return $data;
}
?>

<h2>PHP Form Validation Example</h2>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
  Name: <input type="text" name="name">
  <br><br>
  E-mail: <input type="text" name="email">
  <br><br>
  Website: <input type="text" name="website">
  <br><br>
  Comment: <textarea name="comment" rows="5" cols="40"></textarea>
  <br><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
  <br><br>
  <input type="submit" name="submit" value="Submit">
</form>

<?php
echo "<h2>Your Input:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>

</body>
</html>
	<!-- SOURCE: https://www.w3schools.com/php/php_form_validation.asp -->

	<!--
	LOGIC:
	htmlspecialchars() - prevent Cross-Site Scripting (XSS) attacks.
	trim() - Strip unnecessary characters (extra space, tab, newline).
	stripslashes() - Remove backslashes (\).
	-->

	<!-- SCRIPT -->
	<!DOCTYPE HTML>
	<html>
	<head>
	</head>
	<body>

	<?php
	// define variables and set to empty values
	$name = $email = $gender = $comment = $website = "";

	if ($_SERVER["REQUEST_METHOD"] == "POST") {
	$name = test_input($_POST["name"]);
	$email = test_input($_POST["email"]);
	$website = test_input($_POST["website"]);
	$comment = test_input($_POST["comment"]);
	$gender = test_input($_POST["gender"]);
	}

	function test_input($data) {
	$data = trim($data);
	$data = stripslashes($data);
	$data = htmlspecialchars($data);
	return $data;
	}
	?>

	<h2>PHP Form Validation Example</h2>
	<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
	Name: <input type="text" name="name">
	<br><br>
	E-mail: <input type="text" name="email">
	<br><br>
	Website: <input type="text" name="website">
	<br><br>
	Comment: <textarea name="comment" rows="5" cols="40"></textarea>
	<br><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
	<br><br>
	<input type="submit" name="submit" value="Submit">
	</form>

	<?php
	echo "<h2>Your Input:</h2>";
	echo $name;
	echo "<br>";
	echo $email;
	echo "<br>";
	echo $website;
	echo "<br>";
	echo $comment;
	echo "<br>";
	echo $gender;
	?>

	</body>
	</html>