PHP: asking php the path to itself

I want to know the path of the php interpreter from within a php script.

Such the result will be /usr/bin/php for example

I want this to work both for windows and unix.

How can I do it?

edit: I need th开发者_运维问答is information in runtime, so parsing the result of phpinfo() is less than ideal solution

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From a command line PHP script, try $_SERVER['_']. The location of PHP in a web-based script doesn't really have much meaning, since PHP is embedded into the webserver for the most part, and won't have any executable path.

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To get all the detailed information about your PHP installation, place a call to phpinfo() in a blank file and it will display what you need.

http://php.net/manual/en/function.phpinfo.php

<?php
    phpinfo();
?>

Just remember to delete the file when you push it to production.

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For Linux, you could use $result = exec("which php");

For Windows, I saw this kind of link (I don’t know Windows enough I can verify it to work)