1. Explain why setting the default error reporting level so that the PHP application server reports only parse errors on the web page is a sensible approach for a shared PHP application server. 2....

1. Explain why setting the default error reporting level so that the PHP application server reports only parse errors on the web page is a sensible approach for a shared PHP application server.

2. Describe the function of the PHP superglobal array $ SERVER.

3. Explain the purpose of the PHP comparison operator '==='.

4. Explain the reload problem.

5. What is an HTTP location header and how is it used to solve the reload problem?