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Subject: userland macros
From: cunha17@uol.com.br (Cristiano Duarte)

Is possible to implement userland macros in a PHP extension or it can 
only be implemented in the core?

I know that macros is a preprocessor task and I think PHP has no 
preprocessor (does it?).

So it's possible to implement a preprocessor ?

An example (or something like that):
<?
#define DEFAULT_VALUE(check_value, default_value) (isset(check_value) ? 
check_value : default_value)

$a = DEFAULT_VALUE($my_array['some_index'], true);
?>

Best regards,

Cristiano Duarte