When a PHP script is executed for a long time and it is not clear what it is happening, such as a long loop, a prolonged processing, rainy weather, or other magical things. That is, the desire to see what is happening with the data and at what stage of implementation is a script program. One of the options to use function flush() which clears PHP output buffer and all its contents are sent to the user's browser.
1 2 3 4 5 6 7 8 9 10 11 12 13 | <?header('Content-Type: text/plain; charset=utf-8');//unlimited script run timeset_time_limit(0);//loopfor($i=0;$i<1000;$i++){ //data output echo "\nloop: $i progress: ".round($i/10)."%"; //clear and send PHP output buffer flush(); //pause for clarity usleep(100000);} |
Another option is to use a script to write data to a separate file and load this file from time to time in the browser. You will need to write data file from the script:
1 2 3 4 5 6 7 8 | <?set_time_limit(0);for($i=0;$i<1000;$i++){ //writing data to the file log.txt, you need to set file write permissions file_put_contents('log.txt', "loop: $i<br> progress: ".round($i/10)."%"); //pause for clarity usleep(100000);} |
Further data file will load jQuery load function:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | <!DOCTYPE HTML><html><head><meta charset="UTF-8" /><title>Progress</title><script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script><script language="javascript" type="text/javascript">$(document).ready(function() {var reload = setInterval( function(){ //load data from file and display in element id="progress" $('#progress').load('log.txt'); }, 1000); //every second}); </script></head><body> <div id="progress"></div></body></html> |
