2.10     Exercises

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1. Which of these statements is true about PHP 5?

   • a) Require and include are the same

   • b) Require includes files whether or not the line is executed

   • c) Require exits the script if it cannot find the file to include

   • d) None of the above

2. Which of the following is not a valid way to start a PHP comment?

   • a) //

   • b) ##

   • c) /*

   • d) None of the above

3. PEAR is...

   • a) A tasty fruit

   • b) The PHP Extended Assignment Repository

   • c) The PHP Extension and Application Repository

4. Heredoc syntax is...

   • a) A way to define strings without worrying about quotation marks

   • b) A automatic documentation tool for PHP

   • c) The opposite of theredoc syntax

5. Mixed-mode processing is...

   • a) The act of outputting HTML and pictures at the same time

   • b) The act of entering and exiting PHP processing mode several times

   • c) Impossible in PHP

6. Using switch/case rather than multiple if statements is...

   • a) Faster

   • b) Easier to read

   • c) Both a) and b)

   • d) None of the above

7. Escape sequences are the fastest way to exit your script: true or false?