Sure, Dave. What I am referring to is the original concept that a PHP file would consist of HTML code with <?..php code here..?> tags stuck all through it. For instance, if you wanted to generate an HTML table, you literally enclosed the <tr> tags and so-forth inside of an inline PHP loop. The idea was that the output would consist of the un-bracketed (HTML) content interspersed with the output that may be produced by any PHP code wherever it appeared. There was (by design, actually), no separation between the two.
That turned out to be a really bad idea, and the PHP community quickly moved away from it to adopt MVC strategies that are in many ways quite similar to what one now sees being done in Perl, et al. The language itself also sprouted many new features, including many similarities to Perl and an openly-acknowledged copy of its regex technology. I guess good word spreads fast... ;-) Plus, the Zend folks include some really crackerjack coders. PHP now does MVC along with the best of them, but the language emphatically didn’t start out that way. (But hey, it sure seemed like a perfectly good idea at the time ...)