Special Character in PHP variable?

Question

I want to insert a phone number to a database.

My problem now is, how to add a + character to the variable and save it to the database?

This is my form :

<form action="proccess.php" method="POST">
<input type="number" name="number">
<button type="submit">Send!</button>

Dnd this is process.php :

<?php
$phone = $_POST['number'];
$save = mysql_query("INSERT INTO phonenumber VALUES('$phone')");
?>

So I want to insert the data to be +111111111 for example.

Answer 1

<?php
$phone = "+" . $_POST['number'];
$save = mysql_query("INSERT INTO phonenumber VALUES('$phone')");
?>

Additionally, consider using the newer mysqli_ -functions.

Answer 2

Consider using PDO.

$conn = new PDO("mysql:host=$dbhost;dbname=$dbname", $dbuser, $dbpass);

$phone = '+'.$_POST['number'];

$sql = "INSERT INTO phonenumber (phone) VALUES (:phone)";
$q = $conn->prepare($sql);

$q->execute(array(':phone'=>$phone));