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Ironically, he takes a swipe at PHP. And the swipe is a bit silly since PHP does have a strlen function.

• mmcnickle 14y ago
  His point is that "Learn X in 10 minute" type books are so superficial as to miss even basic string functions.
• Joeri 14y ago
  Except strlen does not give you the length of a string, but the size of a string (in bytes), unless ofcourse mbstring's func_overload directive is enabled.