https://www.php.net/manual/en/reserved.variables.environment...
https://www.php.net/manual/en/reserved.variables.environment...
Sorry, but technical knowledge/experience is not about particular spelling conventions and word proofing, anymore than they are about wearing "business" clothes...
Yes, actually, it is. Sloppy language indicates a sloppy mind. I absolutely crank down my estimate of someone's technical competence when I see him writing badly and will continue to do so. Once in a while, you do see bad writing coupled with good technical insight --- especially in infosec for some reason --- but it's the exception, not the rule.
No, that's a 19th century schoolmaster idea.
Many great hackers are messy with grammar and spelling, and even dyslexic.
Like I said though, it's along the lines of a code smell. It's definitely possible the writer is simply doing it by reflex due to influence from some other language (but then, why not use that language in the example at the top?), but it sticks out and makes more familiar readers question why it's being written that way, where the author is actually coming from.