'continue' is used within looping structures to skip the rest of the current loop iteration and continue execution at the condition evaluation and then the beginning of the next iteration.
'break' ends execution of the current for, foreach, while, do-while or switch structure.
break accepts an optional numeric argument which tells it how many nested enclosing structures are to be broken out of.
Check out the following links:
http://www.php.net/manual/en/control-structures.break.php
http://www.php.net/manual/en/control-structures.continue.php
Hope it helps..