More proofreading and editing

code/arrays.php

@@ -1,6 +1,8 @@
 <?php
 
+// In PHP, arrays are used to store a list of items in a single variable.
 // There are two ways to create an array.
+
 // First, you can use the array construct to pass in values separated by commas
 // and it will return an array.
 $taskList = array('grocery store', 'change car oil');

code/exceptions.php

@@ -20,7 +20,7 @@ $processor = new Processor();
 $processor->charge('1234');
 
 // A developer who wants to prevent an exception from stopping code execution
-// can catch the exception and use it for logging or a return an error to a user.
+// can catch the exception and use it for logging or display the error to a user.
 
 // Just wrap the code that might throw an exception with the keyword "try" and brackets
 // followed by "catch", the exception type in parentheses and more brackets.