问题
I have tried to get several examples that I have found on here and the internet with out success.
Goal: To display a animated gif while php scripts run.
Background: This page is loaded via iframe. The php script I have tests 3 vpn connections and then displays a check (good) or an X (bad). The php portion works, but since there is a delay while testing I want to display the animated gif progress bar.
Running Apache on CentOS 5.7
Currently this is done in a single file named: status.php
I thank you in advance for any assistance.
Roger
回答1:
You can flush the buffer to the browser while PHP is still processing.
echo "Loading";
flush();
sleep(10); // Simulate long process time
echo "Finished";
回答2:
The trick to doing it is not to actually open the PHP file in the iframe. Yeah, seems count intuitive, doesn't it?
Your iFrame should be a page that contains the animated gif and some javascript that will make a call to the php server, get the results, and change the animated gif to the results of the script.
回答3:
Resolved the challenge:
1) Added this to status.php
http://pastebin.com/KR1zPezG
So the iframe loads status.php --> shows the gif --> Loads status2.php --> displays results
NOTE: the pastbin contents are pretty much the whole status.php file, other than the html /html tags.
来源：https://stackoverflow.com/questions/9438535/while-loading-php-script-display-animated-gif