userDataUpdateProcess.php

<?php
include "connection.php";
session_start();
$user = $_SESSION["u"];

$fname = $_POST["f"];
$lname = $_POST["l"];
$email = $_POST["e"];
$mobile = $_POST["m"];
$pw = $_POST["p"];
$line1 = $_POST["l1"];
$line2 = $_POST["l2"];

// Validation checks
if (empty($fname)) {
    echo ("Please Enter Your First Name");
} else if (strlen($fname) > 20) {
    echo ("Your First Name Should be less than 20 Characters");
} else if (empty($lname)) {
    echo ("Please Enter Your Last Name");
} else if (strlen($lname) > 20) {
    echo ("Your Last Name Should be less than 20 Characters");
} else if (empty($email)) {
    echo ("Please Enter Your Email");
} else if (strlen($email) > 100) {
    echo ("Your Email Address Should be less than 100 Characters");
} else if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    echo ("Your Email Address is Invalid");
} else if (empty($mobile)) {
    echo ("Please Enter Your Mobile");
} else if (strlen($mobile) != 10) {
    echo ("Your mobile Number must contain 10 Characters");
} else if (!preg_match("/07[0,1,2,4,5,6,7,8]{1}[0-9]{7}/", $mobile)) {
    echo ("Your Mobile Number is Invalid");
} else if (empty($pw)) {
    echo ("Please Enter Your Password");
} else if (strlen($pw) < 5 || strlen($pw) > 45) {
    echo ("Your Password must contain 5 - 45 Characters");
} else if (empty($line1)){
    echo ("Please Enter Your Address Line 1");
} elseif (strlen($line1) > 50){ // Fixed typo
    echo ("Your Address Line 1 Shud be less than 50 Characters");
} else if (empty($line2)){
    echo ("Please Enter Your Address Line 2");
} elseif (strlen($line2) > 50){ // Fixed typo
    echo ("Your Address Line 2 Shud be less than 50 Characters");
} else{

    // Update the database
    Database::iud("UPDATE `user` SET `fname` ='".$fname."',`lname` ='".$lname."',`email` ='".$email."',`mobile` ='".$mobile."',
    `password` ='".$pw."',`add_line1` ='".$line1."',`add_line2` ='".$line2."' WHERE `email` = '".$user["email"]."'");

    // Fetch the updated user data
    $rs = Database::search("SELECT * FROM `user` WHERE `email` = '" . $user["email"] . "'");
    $d = $rs->fetch_assoc();

    // Update the session with the new data
    $_SESSION["u"] = $d;
    echo("Success"); 
}

?>