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form_validation_db.php
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form_validation_db.php
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<!DOCTYPE HTML>
<html>
<head>
<style>
.error {color: #FF0000;}
</style>
</head>
<body>
<?php
// define variables and set to empty values
$nameErr = $emailErr = $genderErr = $websiteErr = "";
$name = $email = $gender = $comment = $website = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "Name is required";
} else {
$name = test_input($_POST["name"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Z]*$/",$name)) {
$nameErr = "Only letters and white space allowed";
}
}
if (empty($_POST["email"])) {
$emailErr = "Email is required";
} else {
$email = test_input($_POST["email"]);
// check if e-mail address is well-formed
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$emailErr = "Invalid email format";
}
}
if (empty($_POST["website"])) {
$website = "";
} else {
$website = test_input($_POST["website"]);
// check if URL address syntax is valid (this regular expression also allows dashes in the URL)
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
$websiteErr = "Invalid URL";
}
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
if (empty($_POST["gender"])) {
$genderErr = "Gender is required";
} else {
$gender = test_input($_POST["gender"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
<!-- for data inserrtion-->
<?php
if(isset($_POST['submit']))
{
$con=mysql_connect("localhost","root","");
if($con)
{
echo "connected to database successfully!!!!<br>";
}
else
{
echo "connection failure<br>";
die();
}
mysql_select_db("sachin");
$sql="insert into user1 values ('{$name}','{$email}','{$website}','{$comment}','{$gender}')";
$res=mysql_query($sql);
if($res)
{
echo "inserted in table successfully!!!!<br>";
}
else
{
echo "insertion failure<br>";
die();
}
mysql_close($con);
}
?>
<h2>PHP Form Validation Example</h2>
<p><span class="error">* required field.</span></p>
<form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
Name: <input type="text" name="name" value="<?php echo $name;?>">
<span class="error">* <?php echo $nameErr;?></span>
<br><br>
E-mail: <input type="text" name="email" value="<?php echo $email;?>">
<span class="error">* <?php echo $emailErr;?></span>
<br><br>
Website: <input type="text" name="website" value="<?php echo $website;?>">
<span class="error"><?php echo $websiteErr;?></span>
<br><br>
Comment: <textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea>
<br><br>
Gender:
<input type="radio" name="gender" <?php if (isset($gender) && $gender=="female") echo "checked";?> value="female">Female
<input type="radio" name="gender" <?php if (isset($gender) && $gender=="male") echo "checked";?> value="male">Male
<span class="error">* <?php echo $genderErr;?></span>
<br><br>
<input type="submit" name="submit" value="Submit">
</form>
<?php
$con=mysql_connect("localhost","root","");
if($con)
{
echo "connected to database successfully!!!!<br>";
}
else
{
echo "connection failure<br>";
die();
}
mysql_select_db("sachin");
$sql="create table user (name char(20),email char(20),website char(20),comment char(50),gender char (8))";
$result=mysql_query($sql,$con);
if($res)
{
echo "created table successfully!!!!<br>";
}
else
{
echo "table creation failure<br>";
die();
}
$sql="insert into user values ('{$name}','{$email}','{$website}','{$comment}','{$gender}')";
$res=mysql_query($sql.$con);
if($res)
{
echo "inserted in table successfully!!!!<br>";
}
else
{
echo "insertion failure<br>";
die();
}
mysql_close($con);
?>
</body>
</html>