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                事件循環 ~~~ PHP輪詢類庫:reactphp PHP輪詢類庫:icicle.io ~~~ PHP中的輪詢 在PHP中,我們可以使用類庫Icicle來實現,代碼如: ~~~ use Icicle\Loop; Loop\timer(0.1, function() { print "inside timer"; }); print "outside timer"; Loop\run(); ~~~ 或者使用類庫React來實現: ~~~ $loop = React\EventLoop\Factory::create(); $loop->addTimer(0.1, function () { print "inside timer"; }); print "outside timer"; $loop->run(); ~~~ 勉強使用php來模擬js中的setTimeout,其代碼如下: ~~~ <?php function setTimeout(callable $callback, $delay) { $now = microtime(true); while (true) { if (microtime(true) - $now > $delay) { $callback(); return; } } } setTimeout(function() { print "inside the timeout"; }, 1); print "outside the timeout"; ?> ~~~ 顯然,php中的輸出順序是: ~~~ inside the timeout outside the timeout ~~~
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