How do I get all environment variables as an array in PHP?

Question

Title says it. I want to use this with proc_open, to append some variables to the current environment.

$current_env = get_all_env_vars_magically();
$env = array_merge($current_env, $new_vars);
$ph = proc_open($command, array(1 => array('pipe', 'w')), 
    $pipes, dirname(__FILE__), $env);

Edit: $_ENV is empty/not populated by default. $_SERVER contains so much more than env vars.

Then check your [variables_order](http://php.net/manual/en/ini.core.php#ini.variables-order) — Ja͢ck, Dec 20 '12 at 14:35

score 11 · Answer 1 · answered Dec 31 '19 at 09:03

11

Since PHP7.1 the varname can now be omitted to retrieve an associative array of all environment variables.

try getenv() https://3v4l.org/fkFoR

PHP Docs: https://www.php.net/manual/en/function.getenv.php

answered Dec 31 '19 at 09:03

PATROMO

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score 4 · Answer 2 · edited Nov 20 '19 at 09:45

4

Try getenv() it gets the value of an environment variable.

The $_ENV array is created only if the value of the variables_order configuration directive contains E. If $_ENV isn't available, use getenv( ) to retrieve an environment variable:

$path = getenv('PATH');

edited Nov 20 '19 at 09:45

Martin Dimitrov

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answered Jul 27 '17 at 09:34

Deepika Koyalkar

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Could you please add an example of `getenv()` usage? – mattjegan Jul 27 '17 at 10:07
where is `variables_order` configuration directive – Hafiz Nov 30 '17 at 10:08
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So you can get value if you know variable name. Like getenv("PATH")... But how to get list of all names of variables? – YanDatsiuk Jun 24 '19 at 12:08
You can find `variables_order` in php.ini – Quique Torras Oct 06 '21 at 10:45

score 0 · Answer 3 · answered Jun 29 '23 at 10:34

If you are using PHP 7.0, so getenv() is not available, and you are worried that $_ENV and $_SERVER don't contain all relevant variables, then, depending on your server security settings, you may be able to run shell_exec('printenv') to get all environment variables.

score -8 · Answer 4 · answered Dec 20 '12 at 14:30

-8

Think you got to use $_ENV argument

answered Dec 20 '12 at 14:30

ennovativemedia

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Is there really nothing more portable? – Markus Hedlund Dec 20 '12 at 14:36

How do I get all environment variables as an array in PHP?

4 Answers4