Run a PHP script without running out of memory

[soma56]

I have a script that I recently created and it works great...for the first while. I'm trying to figure out different ways to 'optimize' it or otherwise run smoother. My script echo's thousands of lines of code while running through a loop. Firefox, after about an hour, runs so slow to the point of crashing. It is quite obvious - the program doesn't echo as quickly and performance is dramatically reduced.

 

I've edited the memory limit by doing the following:

ini_set('memory_limit','16M');

 

I've 'flushed' the buffer?:

ob_flush();
flush();
usleep(500000);

 

And I've also checked how much memory is being used during every 'parse':

        if ($mem_usage < 1024)
            echo $mem_usage." bytes";
        elseif ($mem_usage < 1048576)
            echo round($mem_usage/1024,2)." kilobytes";
        else
            echo round($mem_usage/1048576,2)." megabytes";
           
        echo "<br/>";

 

It averages at about 10megs through every loop.

 

Is there anything else I should be doing to increase the performance? Unloading or unsetting something?

[trq]

Scripts like these aren't really designed to be executed via a browser. What exactly does the script do?

[travo1992]

I agree with thorpe that is probably the browser being sluggish rather than PHP. As far as I know, PHP doesnt slow down as it approaches the memory limit, only creates errors once it surpasses it.

 

Does the browser need to maintain every line outputted?

 

If not, perhaps you could echo out some js every few thousand lines to clear the window?

[soma56]

I agree with thorpe that is probably the browser being sluggish rather than PHP. As far as I know, PHP doesnt slow down as it approaches the memory limit, only creates errors once it surpasses it.

 

Does the browser need to maintain every line outputted?

 

If not, perhaps you could echo out some js every few thousand lines to clear the window?

 

Ok, so it's likely the browser being sluggish by containing upwards of 40k to 60k lines of code? Nothing I can do except delete then lines every 10k perhaps through js?

[travo1992]

I already said that you will have to use js to do it.

document.body.innerHTML=''

Should do it for you