When it's invalid, maybe. The article you link says in the first three paragraphs:
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Whether you like PHP or not, go and read the article PHP: a fractal of bad design. It's well written by someone who really knows the language which is not true for most other articles about this topic. And there are numerous facts why PHP is badly designed on many levels. There is almost no FUD so it is also a great source for someone who wants to learn PHP really well (which is kind of sad).
I am surprised that I am able to live with PHP and even like it. Maybe I am badly designed too so that I am compatible with PHP. I was able to circumvent or mitigate most problems so the language doesn't bother me.
Anyway, there are several topics which are inaccurate or I don't agree with them. Here they are with no context so they probably wouldn't make much sense without reading the original article:
