I mean, I see what you're saying, but that's got to be speculative at best. I don't know if you can pin that problem down to a particular language. The PHP community is massive and most questions are answered already somewhere online. I have seen PHP developers assume people coming from other languages should just pick up and know PHP's quirks and for that the PHP devs should be faulted.
If your complaint is that there's no PHP-analog to Perl Monks, well then I'd have to say that it does exist, but you need to go to more targeted communities to find it. The CodeIgniter community was immensely helpful. The Laravel community is now large and very helpful. Even the Phalcon community, which is tiny, is great. So while there might not be this one massive PHP Monks community, a similar version does exist in PHP projects' communities.
If your complaint is that there's no PHP-analog to Perl Monks, well then I'd have to say that it does exist, but you need to go to more targeted communities to find it. The CodeIgniter community was immensely helpful. The Laravel community is now large and very helpful. Even the Phalcon community, which is tiny, is great. So while there might not be this one massive PHP Monks community, a similar version does exist in PHP projects' communities.