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createuser.php
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createuser.php
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<?php
session_start();
if(!$_REQUEST["firstname"]||!$_REQUEST["lastname"]||!$_REQUEST["email"]||!$_REQUEST["password"]){
header("Location: singup.php");
}
try{
if(!exists($_REQUEST["email"])){
create_user();
header("Location: user_created.php");
}else{
header("Location: signup.php");
}
}catch(Exception $e){
session_unset();
header("Location: error_while_connecting.php");
}
function exists($email){
$conn=oci_connect('speculapp','SPECULAPP','localhost/XE');
if (!$conn) {
$e = oci_error();
throw new Exception;
}
// Prepare the statement
$stid = oci_parse($conn, 'SELECT EMAIL FROM USERS');
if (!$stid) {
$e = oci_error($conn);
throw new Exception;
}
// Perform the logic of the query
$r = oci_execute($stid);
if (!$r) {
$e = oci_error($stid);
throw new Exception;
}
$exists=false;
while ($row = oci_fetch_array($stid, OCI_NUM)){
if($row[0]==email){
$exists=true;
}
}
oci_free_statement($stid);
oci_close($conn);
return $exists;
}
function create_user(){
$conn=oci_connect('speculapp','SPECULAPP','localhost/XE');
if (!$conn) {
$e = oci_error();
throw new Exception;
}
$stid = oci_parse($conn, 'SELECT MAX(USER_ID) FROM USERS');
if (!$stid) {
$e = oci_error($conn);
throw new Exception;
}
$r = oci_execute($stid);
if (!$r) {
$e = oci_error($stid);
throw new Exception;
}
$row=oci_fetch_array($stid, OCI_NUM);
$id=$row[0];
$newid=$id+1;
$stid=oci_parse($conn,'INSERT INTO USERS VALUES(:id,:firstname,:lastname,:email,:password)');
if (!$stid) {
$e = oci_error($conn);
throw new Exception;
}
oci_bind_by_name($stid,":id",$newid);
oci_bind_by_name($stid,":firstname",$_REQUEST["firstname"]);
oci_bind_by_name($stid,":lastname",$_REQUEST["lastname"]);
oci_bind_by_name($stid,":email",$_REQUEST["email"]);
oci_bind_by_name($stid,":password",$_REQUEST["password"]);
$r = oci_execute($stid);
if (!$r) {
$e = oci_error($stid);