why are some Email Ids Getting accepted and some not PHP - php

Question

I have written This PHP code to for a login and a register page but, I don't know how it doesn't seem logical but it's not accepting some email it's while its accepting others. I don't know how is this even possible. I don't think is the apache server that I'm using because It wouldn't have accepted the other mails it accepted, I also tried restarting the server, Trying a different browser, I tried all that is to try. Please help.
<?php
session_start();
require_once "connect.php"
$con=#new mysqli($hn,$un,$pw,$db);
if($con->connect_error) die("Failed to connect to the database");
if (isset($_POST['register']))
{
$nam=$_POST['name'];
$sur=$_POST['sur'];
$email=$_POST['email'];
$pass=$_POST['pass'];
$cpass=$_POST['cpass'];
if ($nam!="" && $sur!="" && $email!="" && $pass!="" && $cpass!="")
{
if ($pass==$cpass)
{
$userinfo=sanitise($nam,$sur,$email,$pass);
if (validate($userinfo[0],$userinfo[1],$userinfo[2],$userinfo[3]))
{
if(dataentry($userinfo[0],$userinfo[1],$userinfo[2],$userinfo[3]))
{
echo "Account Create Successfully";
}
else
{
echo "Failed to Create the account, Please try again After Some Time";
}
}
}
else
{
echo "The Entered Password do not Match";
}
}
else
{
echo "Please fill all the fields";
}
}
if (isset($_POST['login']))
{
$id=$_POST['email'];
$pin=$_POST['lpass'];
$id=ucfirst(strtolower(stripslashes(strip_tags(htmlentities($id)))));
$pin=stripcslashes(strip_tags(htmlentities($pin)));
$pin=hash('ripemd128', $pin);
if (isuser($id))
{
if (verify($id,$pin))
{
$_SESSION['email']=$id;
header("Location:homepage.php");
}
else
{
echo "The Password And Email Do not Match";
}
}
else
{
echo "The Email Id is Not Registered";
}
}
function verify($email,$pass)
{
global $con;
$query="SELECT * FROM users WHERE email='$email' AND password='$pass'";
$result=$con->query($query);
$rows=$result->num_rows;
if ($rows==1)
{
return 1;
}
else
{
return 0;
}
}
function isuser($email)
{
global $con;
$query="SELECT * FROM users WHERE Email='$email'";
$result=$con->query($query);
$rows=$result->num_rows;
if ($rows==1)
{
return 1;
}
else
{
return 0;
}
}
function sanitise($name,$surname,$email,$password)
{
$name=ucfirst(strtolower(stripslashes(strip_tags(htmlentities($name)))));
$surname=ucfirst(strtolower(stripslashes(strip_tags(htmlentities($surname)))));
$email=ucfirst(strtolower(stripslashes(strip_tags(htmlentities($email)))));
$password=stripcslashes(strip_tags(htmlentities($password)));
$password=hash('ripemd128',$password);
return array($name,$surname,$email,$password);
}
function validate($name,$surname,$email,$password)
{
global $con;
$query="SELECT * FROM users WHERE email='$email'";
$result=$con->query($query);
$rows=$result->num_rows;
if ($rows==0)
{
return 1;
}
else
{
echo "Email Address is already in use";
}
}
function dataentry($name,$surname,$email,$password)
{
global $con;
$query="INSERT INTO users (Name,Surname,Email,Password) VALUES ('$name','$surname','$email','$password')";
$result=$con->query($query);
if ($result)
{
return 1;
}
else
{
return 0;
}
}
?>

Answer 1

Hey there is no Reason for some email Ids to get accepted and some not, try restarting your apache server that might help.
Also read more about SQL Injection, I know you must be working locally and not deploying this, but still its good to know about it.Peace