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Re:The future of PHP, at a distance by velodrome on Tuesday December 17, 2013 @12:26PM (#6922318)
PHP4 vs PHP5 - There was a lot of breakage at the time and was quite painful for many.
Re:The future of PHP, at a distance by ihsw on Tuesday December 17, 2013 @02:36PM (#6923339)
If you've seen any PHP4 codebases then you'd understand that the pain is necessary -- sweat now so you don't bleed later.

Universally, they were brittle and terribly insecure.