The SQL.PHP file has mechanisms for auto building tables, deleting elements from tables and outputting what you have in your tables.
Index.html
Login Page body { text-align:center; } ';}// End Of Declarationns if (!check("Sign_Up") and !check("Sign_In") and !check("Su_User_Name") and !check("Si_User_Name") and !isset($_COOKIE["ID"]) ){ echo "Welcome! Please sign in or sign up !"; button("Sign_In","Sign In"); button("Sign_Up","Sign Up"); } if (check("Sign_In") ) {echo 'Please sign in here.
User Name: Password: Submit !
'; } if (check("Sign_Up") ) { echo 'Please do not use special characters.
Letters, numbers and _ allowed.
Lenght must be longer than 4 characters.
User Name: Game Name: Password: Submit !
'; } if (check("Su_User_Name") and check("Su_Game_Name") and check("Su_Password") ){ if (!verify($_POST["Su_User_Name"]) or !verify($_POST["Su_Game_Name"]) or !verify($_POST["Su_Password"]) or strlen($_POST["Su_User_Name"]) < 5 or strlen($_POST["Su_Game_Name"]) < 5 or strlen($_POST["Su_Password"]) < 5 ) { echo "
Letters, numbers and _ only. Lenght must be greater than 4 characters.
"; button("x","<-- Back"); } else{ if (test("Login_Name",$_POST["Su_User_Name"]) ){ echo "User name taken.
"; button("x","<-- Back"); } elseif(test("Game_Name",$_POST["Su_Game_Name"]) ){ echo "Game name taken.
"; button("x","<-- Back"); } else{ $x = "1234567890abcdefghijklmnopqrstuvwxyABCDEFGHIJKLMNOPQRSTUVWXYZ"; $x2 = ''; for ($i = 0; $i < 21; $i++) { $x2 .= $x[rand(0, strlen($x) - 1)]; } mysqli_query($sql,"INSERT INTO ".$table." (Game_Name,Login_Name,Blarg,ID)VALUES('".$_POST["Su_Game_Name"]."','".$_POST["Su_User_Name"]."','" .$_POST["Su_Password"]."','".$x2."')"); echo "Account created !
"; $temp = mysqli_fetch_assoc(mysqli_query($sql,"SELECT * FROM ".$table." WHERE ID='".$x2."'") ); setcookie("ID",$temp["ID"], time()+3600); button("x","<-- Back"); } } } if (check("Si_User_Name") and check("Si_Password") ) { $tmp1 = strip($_POST["Si_User_Name"]); $tmp2 = strip($_POST["Si_Password"]); if (test("Login_Name",$tmp1) and test("Blarg",$tmp2) ){ echo "Logged in !
"; $temp = mysqli_fetch_assoc(mysqli_query($sql,"SELECT * FROM ".$table." WHERE Login_Name='".$tmp1."'") ); setcookie("ID",$temp["ID"], time()+3600); button("x","<-- Back"); } else{ echo "Bad name or password. Please try again.
"; button("x","<-- Back"); } } ?>
.
sql.php
.
Login Page
'; }}if (isset($_COOKIE["ID"])){ $result = mysqli_query($sql,"SELECT ID FROM ".$table." WHERE ID='".strip($_COOKIE["ID"])."'"); if (mysqli_fetch_array($result)){ $temp = mysqli_fetch_assoc(mysqli_query($sql,"SELECT Game_Name FROM ".$table." WHERE ID='".strip($_COOKIE["ID"])."'") ); echo "Welcome " . $temp["Game_Name"] . " !
"; } else{ unset($_COOKIE["ID"]); back(); }} else{ back(); }// Table Handeling if ($update){if ( mysqli_query($sql, "SELECT 1 FROM ". $table . " ") ) { $get = mysqli_query($sql, "SHOW COLUMNS FROM " . $table); echo "Existing columns
"; while ($col = mysqli_fetch_row($get)) { echo "Existing column: " .$col[0] . "
";} echo"=====
"; for ($x=0; $x!= count($add); $x++){ if(!mysqli_query($sql,"SELECT ". $add[$x] ." FROM ".$table . " ") ){ mysqli_query($sql,"ALTER TABLE ". $table ." ADD ".$add[$x] . " TEXT "); echo "Adding column: ". $add[$x] . "
"; }} for ($x=0; $x!= count($sub); $x++){ if(mysqli_query($sql,"SELECT ". $sub[$x] ." FROM ".$table . " ") ){ mysqli_query($sql,"ALTER TABLE " . $table . " DROP COLUMN " . $sub[$x] . " "); echo "Removing column: ". $sub[$x] . "
"; }} echo"=====
"; $get = mysqli_query($sql, "SHOW COLUMNS FROM " . $table); echo "Modifyed columns
"; while ($col = mysqli_fetch_row($get)) { echo "Existing column: " .$col[0] . "
"; }}else{echo "Error: Table '" . $table . "' does not exist
";} } ?>
I don't know PHP very well but it looks like you're missing password hashing, which is kind of critical given how many people get it wrong. It would be nice for once to have examples that actually show the right thing to do with respect to password security, and unfortunately storing passwords in plaintext isn't it. At the very least you want to run a decent KDF and ideally you will pursue PCI compliance (if the service offered is worth the trouble).
I'm sorry but I cannot upvote this, even if it is just an example on how to design login pages it is still propagating bad practices and god knows how many websites are cobbled together from just these kinds of samples.