Online PHP editor | output for VDOpJ

@ 2014-05-10T08:23:42Z

<?php
class EmptyIterator extends Iterator implements Countable
   {
           /** No operation.
            * @return void
            */
           function rewind()
           {
                   // nothing to do
           }

           /** @return \c false
            */
           function valid()
           {
                   return false;
           }

           /** This function must not be called. It throws an exception upon access.
            * @throw Exception
           * @return void
           */
           function current()
           {
                   throw new Exception('Accessing the value of an EmptyIterator');
           }

           /** This function must not be called. It throws an exception upon access.
            * @throw Exception
            * @return void
            */
           function key()
           {
                   throw new Exception('Accessing the key of an EmptyIterator');
           }

           /** No operation.
            * @return void
            */
           function next()
           {
                   // nothing to do
           }

           /**
            * @return int
            */
           function count()
           {
                   return 0;
           }

   }


$ei = new EmptyIterator;
echo count($ei);

Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Cannot declare class EmptyIterator, because the name is already in use in /in/VDOpJ on line 2
Process exited with code 255.
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28: Fatal error: Class EmptyIterator cannot extend from interface Iterator in /in/VDOpJ on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.1: Fatal error: Class EmptyIterator must implement interface Traversable as part of either Iterator or IteratorAggregate in Unknown on line 0
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/VDOpJ on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Parse error: parse error, unexpected T_STRING, expecting '{' in /in/VDOpJ on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error, expecting `'{'' in /in/VDOpJ on line 2
Process exited with code 255.

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