سلام خسته نباشید
Fatal error: Uncaught PDOException: SQLSTATE[3D000]: Invalid catalog name: 1046 No database selected in C:\xampp\htdocs\7Learn.php\7auth\libs\auth-lib.php:8 Stack trace: #0 C:\xampp\htdocs\7Learn.php\7auth\libs\auth-lib.php(8): PDOStatement->execute(Array) #1 C:\xampp\htdocs\7Learn.php\7auth\auth.php(17): isUserExists('jamal84hussaini...', '0903787587.') #2 {main} thrown in C:\xampp\htdocs\7Learn.php\7auth\libs\auth-lib.php on line 8