Online PHP editor | output for jZe6d

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: wow Fatal error: Uncaught Error: Call to undefined function mysql_real_escape_string() in /in/jZe6d:5 Stack trace: #0 {main} thrown in /in/jZe6d on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28: wow Fatal error: Call to undefined function mysql_real_escape_string() in /in/jZe6d on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: wow Warning: mysql_real_escape_string(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /in/jZe6d on line 5 Warning: mysql_real_escape_string(): A link to the server could not be established in /in/jZe6d on line 5 Warning: mysql_real_escape_string(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /in/jZe6d on line 5 Warning: mysql_real_escape_string(): A link to the server could not be established in /in/jZe6d on line 5 select id, username from users where username='' and password''
Output for 4.3.0 - 4.3.1: wow Warning: mysql_real_escape_string() [http://www.php.net/function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /in/jZe6d on line 5 Warning: mysql_real_escape_string() [http://www.php.net/function.mysql-real-escape-string]: A link to the server could not be established in /in/jZe6d on line 5 Warning: mysql_real_escape_string() [http://www.php.net/function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /in/jZe6d on line 5 Warning: mysql_real_escape_string() [http://www.php.net/function.mysql-real-escape-string]: A link to the server could not be established in /in/jZe6d on line 5 select id, username from users where username='' and password''