03-21-2006
by using c++ how to set environment variables in unix
hi,
I am writing c++ code in unix operating system.In that i need to set the environment variable in unix.
suppose previously i have environment variable like path="something" now i need to change the path value to some othervalue . so that some other program will access that path value and by using new path value some new program will work.so please tell me the way for this.
After changing the environement variable i need to access that changed environment variable for some running another program.
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LEARN ABOUT PHP
apache_setenv
APACHE_SETENV(3) 1 APACHE_SETENV(3)
apache_setenv - Set an Apache subprocess_env variable
SYNOPSIS
bool apache_setenv (string $variable, string $value, [bool $walk_to_top = false])
DESCRIPTION
apache_setenv(3) sets the value of the Apache environment variable specified by $variable.
Note
When setting an Apache environment variable, the corresponding $_SERVER variable is not changed.
PARAMETERS
o $variable
- The environment variable that's being set.
o $value
- The new $variable value.
o $walk_to_top
- Whether to set the top-level variable available to all Apache layers.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
Setting an Apache environment variable using apache_setenv(3)
<?php
apache_setenv("EXAMPLE_VAR", "Example Value");
?>
NOTES
Note
apache_setenv(3) can be paired up with apache_getenv(3) across separate pages or for setting variables to pass to Server Side
Includes (.shtml) that have been included in PHP scripts.
SEE ALSO
apache_getenv(3).
PHP Documentation Group APACHE_SETENV(3)