PHP sleep function

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sleep

(PHP 3, PHP 4, PHP 5)

Delays the program execution for the given number of
seconds.

Halt time in seconds.

Returns zero on success, or FALSE on errors.

If the specified number of seconds is negative,
this function will generate a E_WARNING.

Example 1. sleep() example

 
// current time
echo date('h:i:s') . "\n";
 
// sleep for 10 seconds
sleep(10);
 
// wake up !
echo date('h:i:s') . "\n";

This example will output (after 10 seconds)

usleep(),
set_time_limit()