PHP Sleep 功能

資料來源: https://www.php.net/manual/en/function.sleep.php

https://www.php.net/manual/en/function.usleep.php

https://stackoverflow.com/questions/47067127/php-sleep-in-milliseconds

Code

<?php

// current time
echo date('h:i:s') . "\n";

// sleep for 10 seconds
sleep(10);//10 sec

// wake up !
echo date('h:i:s') . "\n";

?>

<?php

// Current time
echo date('h:i:s') . "\n";

// wait for 2 seconds
usleep(2000000);//2us*10^6=2s

// back!
echo date('h:i:s') . "\n";

?>

<?php

// wait for 2 miliseconds
usleep(2*1000);//2us*10^3=2ms

?>