## Example

`

     void echo ( string $arg1 [, string $... ] )

`

## Description

Outputs all parameters. echo() is not actually a function (it is a language construct), so you are not required to use parentheses with it. echo() (unlike some other language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want to pass more than one parameter to echo(), the parameters must not be enclosed within parentheses. echo() also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign. This short syntax only works with the short_open_tag configuration setting enabled.
I have <`?=$foo?`> foo.

## Return Values

No value is returned.