It's not about a language or a technology, it's about what you do or can do with it...
All trendy technologies might be replaced anytime (hey React, Go, I'm looking at you!), one day they are very cool, the next day nobody maintains them and everyone talks about another new cool thing; how many of these have we seen?
New cool stuff are important to know, explore, test, use because they bring a lot of interesting stuff, but often they only address some use cases, as they have been made by a team with specific needs (looking at all hundreds NoSQL databases?); php and some others (like ruby) are stable, well known, cover a vast area of use cases with very well made and long thought frameworks and tools (symfony, doctrine, phpstorm, ...).
You are always free to follow trends, like with clothes, or just choose the best thing for what you need to do. You'll definitely find jobs with any of these, if you are able to explain why they are good for what you are doing.
All trendy technologies might be replaced anytime (hey React, Go, I'm looking at you!), one day they are very cool, the next day nobody maintains them and everyone talks about another new cool thing; how many of these have we seen?
New cool stuff are important to know, explore, test, use because they bring a lot of interesting stuff, but often they only address some use cases, as they have been made by a team with specific needs (looking at all hundreds NoSQL databases?); php and some others (like ruby) are stable, well known, cover a vast area of use cases with very well made and long thought frameworks and tools (symfony, doctrine, phpstorm, ...).
You are always free to follow trends, like with clothes, or just choose the best thing for what you need to do. You'll definitely find jobs with any of these, if you are able to explain why they are good for what you are doing.