How to retrieve variables defined in a particular include file in php? -

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i want know variables have been declared within include file.

example code is:

  1. include file:

    <?php $a = 1; $b = 2; $c = 3; $myarr = array(5,6,7); ?>

  2. main file:

    <?php  $first = get_defined_vars(); include_once("include_vars.php"); $second = get_defined_vars();  $diff = array_diff($second ,$first); var_dump($diff);  $x = 12; $y = 13; ?>

my attempt use difference of get_defined_vars() not seem give accurate information. gives:

array(2) {   ["b"]=>   int(2)   ["c"]=>   int(3) }

$a , $myarr seem missing. other methods can use?

it's not thing this, hope it's needed debugging. should find difference between keys of arrays get_defined_vars return, not between values:

$diff = array_diff(array_keys($second),array_keys($first));

if don't want include file, more complicated way using tokenizer:

$tokens = token_get_all(file_get_contents("include_vars.php"));   foreach($tokens $token) {     if ($token[0] == t_variable)         echo $token[1] . ', '; }

that return variables, non-globals ones , ones unset in script (!)


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