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sleep()

int sleep ( int $seconds )

Description

sleep() delays the program execution for the specified number of seconds

※ available F/W version : all

Parameters

• $seconds - the sleeping time in seconds. If this parameter is negative, the function is same to when this parameter is 0

Return values

Returns 0, PHP error on error

Example

<?php
$pid_st0 = pid_open("/mmap/st0");
pid_ioctl($pid_st0, "set mode free");

$sleeping_time = 3;

echo "sleeping for $sleeping_time seconds...\r\n";  // OUTPUT: sleeping for 3 seconds...
pid_ioctl($pid_st0, "start");
sleep($sleeping_time);

$tick = pid_ioctl($pid_st0, "get count");
printf("slept time: %d milli seconds\r\n", $tick);  // OUTPUT: slept time: 3000 milli seconds
?>

See also

usleep()

Remarks

This function is identical to the PHP group’s sleep() function except error handling. If the specified number of seconds is negative, the PHP group’s sleep() function generates a E_WARNING.