PHP/Utility Function/ ENV

Reading an environment variable, $_ENV["USER"]

   <source lang="html4strict">

<?php $name = $_ENV["USER"]; ?>

 </source>
   
  

Reading another environment variable,$_ENV["HOME"]

   <source lang="html4strict">

<?php print $_ENV["HOME"]; ?>

 </source>
   
  

Reading Environment and Configuration Variables

   <source lang="html4strict">

<?php echo $_ENV["ProgramFiles"] . "
"; echo $_ENV["COMPUTERNAME"] . "
"; echo getenv("COMPUTERNAME") . "
"; echo ini_get ("post_max_size") . "
";

print_r (ini_get_all()); ?>

 </source>
   
  

Setting Environment and Configuration Variables

   <source lang="html4strict">

<?php

 echo $_ENV["COMPUTERNAME"] . "
"; 
 $_ENV["COMPUTERNAME"] = "Hello World!";
 echo $_ENV["COMPUTERNAME"] . "
"; 
 echo ini_get ("post_max_size");
 
 ini_set("post_max_size","200M");

?>

 </source>