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# Whitespace can be removed in between keywords and variables

You can easily remove the whitespace that's in-between a keyword (`return` or a function that doesn't need parentheses) and a variable (either starting with `$` for the variable's name or `"` if the variable to deal with is a string):
<!-- language-all: lang-php -->

    <?php $x=9+10;echo"Hello!\n";echo$x;

[Try it online!][TIO-ktgtme5f]

[TIO-ktgtme5f]: https://tio.run/##K8go@P/fxr4go0BBpcLWUtvQwDo1OSNfySM1JydfMSZPCcxVqbD@/x8A "PHP – Try It Online"