Limitless furniture PHP set_time_limit0 long connection implementation analysis

Each PHP script has a limited execution time, so we need to set the execution time of a script to unlimited through set_time_limit; then use flush() and ob_flush() to clear the server buffer and output the return value of the script at any time.
Such as the following script:

Copy the code The code is as follows:

header("Content-Type: text/plain");
set_time_limit(0);
$infoString = " Hello World" . "n";
while( isset($infoString) )
{
echo $infoString;
flush();
ob_flush();
sleep(5);
}
?>

when After we execute, every 5 seconds, we will get a line of Hello World. If you do not press the stop button, the browser will continue to load line by line.
Through this method, we can complete many functions, such as robot crawlers, instant message boards and other programs.

The above introduces the implementation analysis of limitless furniture PHP set_time_limit0 long connection, including the content of limitless furniture. I hope it will be helpful to friends who are interested in PHP tutorials.