Notice: Undefined index: user in H:\Apache24\htdocs\test4\10\example10-23.php on line 2

Fatal error: Uncaught Error: Call to undefined function mysql_real_escape_string() in H:\Apache24\htdocs\test4\10\example10-23.php:14 Stack trace: #0 H:\Apache24\htdocs\test4\10\example10-23.php(8): mysql_fix_string(NULL) #1 H:\Apache24\htdocs\test4\10\example10-23.php(2): mysql_entities_fix_string(NULL) #2 {main} thrown in H:\Apache24\htdocs\test4\10\example10-23.php on line 14