D2499.id6293.diff
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	diff --git a/src/OS/CurrentProcess.php b/src/OS/CurrentProcess.php
	--- a/src/OS/CurrentProcess.php
	+++ b/src/OS/CurrentProcess.php
	@@ -30,4 +30,30 @@
	return posix_geteuid() === 0;
	}

	+ /**
	+ * Determines the username of the current process, ie the PHP interpreter.
	+ */
	+ public static function getUsername () : string {
	+ if (!extension_loaded("posix")) {
	+ // POSIX PHP functions aren't always available.
	+ // In such cases, `whoami` will probably be available.
	+ $username = trim((string)shell_exec("whoami"));
	+
	+ if (CurrentOS::isWindows() && str_contains('\\', $username)) {
	+ // Perhaps the domain information could be useful if the user
	+ // can belong to an AD domain, to disambiguate between local
	+ // accounts and AD accounts.
	+ //
	+ // If not attached to a domain, the PC hostname is used.
	+ //
	+ // We return only the username part to be coherent with UNIX.
	+ return explode('\\', $username, 2)[1];
	+ }
	+
	+ return $username;
	+ }
	+
	+ return posix_getpwuid(posix_geteuid())["name"];
	+ }
	+
	}