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Accessing environment variables from php


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How can I access environment variables from php?


There are two possiblities:
  1. You can use the function getenv() which will work from the CLI as well as via http
  2. If you're using php via http, then you can use the global array HTTP_ENV_VARS where all environment variables are exported. You need to declare this as a global identifier (see second part of code example).

  function show_home_directory() {
    # works from CLI and in web browser:
    echo getenv("HOME"). "<br>\n";

    # only via http
    global $HTTP_ENV_VARS;
    echo $HTTP_ENV_VARS["HOME"] . "<br>\n";


Content-type: text/html


2006-08-02, 14:59:58
anonymous from United States  
2009-04-16, 00:26:37
anonymous from Pakistan  
2009-07-04, 13:13:57
anonymous from United States  

was the view-source result
2009-08-09, 01:35:46
anonymous from Islamabad, Pakistan  
Know i will access envirnment variable in an easy way
lot of thanks ,God may leave u at right way. Ameen!
2009-12-10, 00:22:01
anonymous from Pakistan  
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