If you read carefully, I'm not bad-mouthing other languages. Other language. Specific. PHP. I'm not slagging Python, Ruby, or any other of the interpretive bretheren (although I admit to not liking them - Python's whitespace in particular is a deal breaker).
PHP at a basic level is a similar language to Perl. PHP has emerged from a specific problem domain, and is now being thought of as a general purpose scripting language. My thoughts on PHP mirror RMS' thoughts on TCL - it seems to be a pointless diversion.
If people think PHP is easier to learn than Perl, I think they're wrong. However, that can't be happening through critical analysis, because apart from the specific case of code-in-web-page, Perl wins over PHP. Something else is causing people to think PHP is more suitable for work than Perl, to the extent they discuss it as above.