Whatever it is, it's not for engineers. Engineers care about maintenance, and PHP isn't maintainable.
PHP encourages spaghetti, encourages bad practices like using string concatenation instead of parameter binding, even encourages the "copy paste" approach to code-reuse. And so on through a litany of maintenance-hostile behaviours.
It has taken long painful years to beat the worst security mis-features out of PHP. It may be decades before the knock-on effects reach the many PHP "applications" (if piles of accumulated PHP may be so-called) that have grown up while such mis-features existed.