pub fn printf(message: &str) -> Result<()> {
    let message = CString::new(message)?;
    unsafe {
        php_printf(FORMAT_STR.as_ptr().cast(), message.as_ptr());
    };
    Ok(())
}
Prints to stdout using the `php_printf` function.

Also see the [`php_print`] and [`php_println`] macros.

# Arguments

* message - The message to print to stdout.

# Errors

* If the message could not be converted to a [`CString`].
src/zend/mod.rs