Deprecated: mysqli_real_escape_string(): Passing null to parameter #2 ($string) of type string is deprecated in /home/www/doc/31847/dcp318470002/edu-con.de/www/linkzu/index.php on line 47

Fatal error: Uncaught ArgumentCountError: mysqli_real_escape_string() expects exactly 2 arguments, 1 given in /home/www/doc/31847/dcp318470002/edu-con.de/www/linkzu/index.php:71 Stack trace: #0 /home/www/doc/31847/dcp318470002/edu-con.de/www/linkzu/index.php(71): mysqli_real_escape_string() #1 {main} thrown in /home/www/doc/31847/dcp318470002/edu-con.de/www/linkzu/index.php on line 71