How to Create a Working Bootstrap Contact Form with PHP 100% Working

Contact forms are one of the most common elements found on a web page, and they can be used to gather just about any type of information required from your users.

Fortunately, designing contact forms with Bootstrap is a breeze with all of the built-in classes available. But since Bootstrap is only a front-end framework, we need to introduce added functionality in order for to make the contact form functional.

In this step by step tutorial, we’re going to be creating a working Bootstrap contact form with PHP, a popular server-side language. Our contact form will also have built-in spam prevention and form validation.

Using Bootstrap code, you should have something that looks like this.

PHP Code

// Your Email
$recipient = "info@faduhack.com"; // PLEASE SET YOUR EMAIL ADDRESS
// Check $recipient
if($recipient === '') {
returnAndExitAjaxResponse(
constructAjaxResponseArray(
FALSE,
'RECIPIENT_IS_NOT_SET',
array('error_message'=> 'RECIPIENT email address is not set. Please configure the script.')
)
);
}
// Check for empty required field
if(!isset($_POST["email"]) || !isset($_POST["fname"]) || !isset($_POST["message"])) {
returnAndExitAjaxResponse(
constructAjaxResponseArray(
FALSE,
'MISSING_REQUIRED_FIELDS',
array('error_message'=> 'MISSING_REQUIRED_FIELDS should not be occurred.')
)
);
}
// Sanitize input
$fname = filter_var($_POST["fname"], FILTER_SANITIZE_STRING);
$lname = filter_var($_POST["lname"], FILTER_SANITIZE_EMAIL);
$website = $_POST["website"];
if (!preg_match("~^(?:f|ht)tps?://~i", $website)) $website = "http://" . $website;
$website = filter_var($website, FILTER_VALIDATE_URL);
$email = filter_var(trim($_POST["email"]), FILTER_SANITIZE_EMAIL);
$message = filter_var($_POST["message"], FILTER_SANITIZE_STRING, FILTER_FLAG_NO_ENCODE_QUOTES);
// If non required fields are empty
if ( empty($lname) ){
$lname = "No last name entered.";
}
if ( empty($website) ){
$website = "No website entered.";
}
// Headers
$headers = 'From: '.$fname.' <'.$email.'>' . "\r\n";
$headers .= 'Reply-To: '.$email.'' . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion();
// Subject
$subject = "New email from contact form";
// Build Message
$email_content = "First Name: $fname\n";
$email_content .= "Last Name: $lname\n";
$email_content .= "Website: $website\n";
$email_content .= "Email: $email\n\n";
$email_content .= "Message:\n$message\n\n\n";
$email_content .= "CLIENT IP:\n".get_client_ip()."\n";
$email_content .= "HOST IP:\n".$_SERVER['SERVER_ADDR']."\n";
// Check if sent
try {
$sendmailResult = mail($recipient, $subject, $email_content, $headers);
if( $sendmailResult === TRUE ) {
returnAndExitAjaxResponse(
constructAjaxResponseArray(
TRUE
)
);
} else {
returnAndExitAjaxResponse(
constructAjaxResponseArray(
FALSE,
'ERROR_AT_PHPMAIL',
array('error_information'=> error_get_last() )
)
);
}
} catch (Exception $_e) {
returnAndExitAjaxResponse(
constructAjaxResponseArray(
TRUE,
'ERROR_AT_PHPMAIL',
array('error_message'=> $_e->getMessage())
)
);
}
/*
Construct ajax response array
Input: Result (bool), Message (optional), Data to be sent back in array
*/
function constructAjaxResponseArray ($_response, $_message = '', $_json = null) {
$_responseArray = array();
$_response = ( $_response === TRUE ) ? TRUE : FALSE;
$_responseArray['response'] = $_response;
if(isset($_message)) $_responseArray['message'] = $_message;
if(isset($_json)) $_responseArray['json'] = $_json;
return $_responseArray;
}
/*
Returns in the Gframe ajax format.
Input: data array processed by constructAjaxResponseArray ()
Outputs as a html stream then exits.
*/
function returnAndExitAjaxResponse ($_ajaxResponse) {
if(!$_ajaxResponse){
$_ajaxResponse = array('response'=>false,'message'=>'Unknown error occurred.');
}
header("Content-Type: application/json; charset=utf-8");
echo json_encode($_ajaxResponse);
die();
}
// Function to get the client IP address
function get_client_ip() {
    $ipaddress = '';
    if (isset($_SERVER['HTTP_CLIENT_IP'])) {
        $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
    } else if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
    } else if(isset($_SERVER['HTTP_X_FORWARDED'])) {
        $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
    } else if(isset($_SERVER['HTTP_FORWARDED_FOR'])) {
        $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
    } else if(isset($_SERVER['HTTP_FORWARDED'])) {
        $ipaddress = $_SERVER['HTTP_FORWARDED'];
    } else if(isset($_SERVER['REMOTE_ADDR'])) {
        $ipaddress = $_SERVER['REMOTE_ADDR'];
    } else {
        $ipaddress = 'UNKNOWN';
    }
    return $ipaddress;
}