query: Notice: Undefined index: username
positive_passages.docid: 2005
positive_passages.text: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP
negative_passages.docid: 1262
negative_passages.text: Fatal error: [] operator not supported for strings
negative_passages.docid: 83335
negative_passages.text: PHP $_GET and $_POST undefined problem
negative_passages.docid: 55017
negative_passages.text: How do I show a message with username and date at login?
negative_passages.docid: 20778
negative_passages.text: Comment submission broken for comments that end with @username
negative_passages.docid: 113181
negative_passages.text: Customize the Duplicate Username error message in a Community
negative_passages.docid: 108277
negative_passages.text: postfix user unknown in virtual alias table
negative_passages.docid: 76704
negative_passages.text: Undefined variable: $_SESSION
negative_passages.docid: 157148
negative_passages.text: What are the valid characters in PHP variable, method, class, etc names?
negative_passages.docid: 100393
negative_passages.text: What causes: "Notice: Uninitialized string offset" to appear?
negative_passages.docid: 18745
negative_passages.text: `who am i` after `su` not showing new user id?
negative_passages.docid: 140456
negative_passages.text: Why is the ##UserID## parameter not populated in Data Explorer anymore?
negative_passages.docid: 95306
negative_passages.text: PostgreSQL error: Fatal: role "username" does not exist
negative_passages.docid: 84490
negative_passages.text: "Who" prints duplicated usernames
negative_passages.docid: 60429
negative_passages.text: Why is the "user was removed" message so vague?
negative_passages.docid: 16506
negative_passages.text: Fatal error: Call to undefined function mysql_connect()
negative_passages.docid: 1238
negative_passages.text: mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc... expects parameter 1 to be resource