- Misspelling of Array key (case sensitive).
- If the variable comes from another script, check the script is 'include'd or 'require'd at least once;
- Did you really define/set the Array element?
- Did you unset the Array element somewhere before?
Documentaion is like sex. When it's good, it's very good. When it's bad, it's better than nothing.
Executes another PHP script strFILE in the middle of the current script where called as if all of them were a single script.
Use PDO and its prepared statement functionality.
sPHP application output is already compressed if the client browser supports it. You don't need to put any extra effort to accomplish this.