← All built-ins / ui_alive()
ui_alive()
ui_alive(...$args): bool
Parameters
Takes no arguments.
Return value
true while the event loop is still running.
Example
echo "while (ui_alive()) { /* polling alternative */ }";while (ui_alive()) { /* polling alternative */ }This call needs a real environment (window, server, database or stdin) — the snippet above shows the typical usage shape.