Php，如何在内存中“注入”变量（和值）

Question

I'm looking for a way to :

1. define a php global variable:

   • If a execute a php file A, file B ... I can access this variable while apache is running.

2. 'hide' the value of this variable

   • I don't want the value of this variable be findable if someone access to the server and search (via a grep -nri by example) the value of this variable in a PHP file

My question is:

• Is there a way for inject a global persistent (while Apache running) variable in memory without define its value in any file in the server ?

=> if I create a simple PHP form where the user can set and submit the value of this variable, how can I save the value of this variable for it can be accessible from any PHP file ?

Question bonus:

• Is there a way for inject an usable PHP variable via a C or JAVA program ? (via a compiled program)

Answer 1

in your PHP script and/or program. If you can do it in .htacces, you can do it in your vhost configuration.

echo $_SERVER['MY_VAR']

There's also PHP functions to set your PHP ini values.

In your first file

<?php
$uniqid="Hello";
putenv("UNIQID=$uniqid");
?>

In your second file

<?php echo getenv('UNIQID') ?>

I'm not sure about a way to populate $ENV, or is SetEnv will do it. It's worth investigating a var_dump($ENV) with the above.

Inject PHP variable into JAVA

Process runtime = Runtime.getRuntime().exec("php -r  'echo getenv(\'UNIQID\');'");