Pausing a script...

[Anon]

$image = "filename.gif";

if(substr($image,-3) == "gif")
{
$image_png = exec("command.com /c start gif2png filename.gif >NUL");
}

The above code produces filename.png

However, when I feed the output from the above to another script in real time, and try to use ImageCreateFromPNG() for editing the png picture, it produces this error "Unable to open '' for reading: Permission denied"

The php script, the gif and png images are all in the same folder.

I have a feeling the conversion from gif to png takes a couple of seconds, and hence the png image is not yet available by the time the second script kicks in.

Is there a way to pause a script for a second or two? Maybe that'll solve the problem.

TIA

Richie.

[Anon]

hm maybe it's a primitive reply but try to use the pause(n), where n-number of seconds.
maybe it'll help.

[[deleted]]

Quite primitive :-)

if you leave out the ">NULL" you maye have better results.

Exec's default is to wait for the command to finish to get the output. with '>NUL' there is no output and no reason to wait.

[Anon]

Thanks guys.

Here's what I had to do to get it to work...
1. I removed the >NUL

if(substr($image,-3) == "gif")
{
exec("command.com /c start gif2png $image");
}

2. then manually changed the extension.

if(substr($show_image,-3) == "gif")
{
$image = ereg_replace("gif","png",$image);
}