Javascript can't be compared with PHP, javascript is the only scripting language that all browsers understand except wasm. And there are multiple interpreters t

Javascript can't be compared with PHP, javascript is the only scripting language that all browsers understand except wasm. And there are multiple interpreters that may work different or have not all features avail. PHP is used on servers that can run many different languages. Additional there is only one php interpreter that is widely used (yes there was hhvm and some others ), that means you can rely on all features of this version.