Ideas in this flowchart

• A semicolon after a while condition causes unintended loop behavior.
• The continuation condition has no semicolon because it is not an executable statement.
• As with an if-statement, adding a semicolon can lead to unintended results.
• Example: while($i <= 10); { $i++; }
• The while keyword and condition bind to the next executable statement or code block.
• Because of the semicolon, the statement bound to the while loop is empty.
• The action and $i++ are placed in the following code block.
• The loop therefore repeatedly executes the empty statement instead of the intended action.