sleep
(PHP 3, PHP 4, PHP 5)
sleep -- Delay execution
说明
int
sleep ( int seconds )
Delays the program execution for the given number of
seconds
.
参数
seconds
Halt time in seconds.
返回值
Returns zero on success, or FALSE on errors.
错误/异常
If the specified number of seconds
is negative,
this function will generate a E_WARNING.
范例
例 1. sleep() example
<?php
// current time echo date('h:i:s') . "\n";
// sleep for 10 seconds sleep(10);
// wake up ! echo date('h:i:s') . "\n";
?>
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This example will output (after 10 seconds)
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