posix_getlogin() will return boolean false when there is no shell, e.g. when running under an apache process
posix_getlogin
(PHP 4, PHP 5, PHP 7)
posix_getlogin — Return login name
Description
posix_getlogin
( void
) : string
Returns the login name of the user owning the current process.
Return Values
Returns the login name of the user, as a string.
Examples
Example #1 Example use of posix_getlogin()
<?php
echo posix_getlogin(); //apache
?>
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