save file names in an array and then compare.

[denoteone]

i want to get the names and sizes of files in a specific directory and the save them in and array and then 5 seconds later do it again and compare the two arrays. if they do not match exactly stop the script. This is what i have so far.... If anyone has a better way let me know.

 

$dir = "upload/new/";
$dh = opendir($dir);

while (($file = readdir($dh)) !== false) {
$images["file". $i  => $file, "file_size". $i  => filesize($file) ];
}

//Somehow wait 5 seconds and then run the while loop again 


while (($file = readdir($dh)) !== false) {
$images_new["file". $i  => $file, "file_size". $i  => filesize($file) ];
}

closedir($dh);

//now compare the two

If ($images != $images_new){

do this
}else{
echo "the arrays are the same";

}

 

Any ideas would be great!

[litebearer]

might also look at...

 

http://php.net/manual/en/function.array-diff.php

[denoteone]

Ok i have the comparing of the array's working. But how can I increment so that the script continues after 5 seconds?

[litebearer]

Probably a better way, but...

 

put it in a loop

and use http://www.w3schools.com/php/func_misc_sleep.asp

 

a lot depends on why you need to check so frequently

 

[denoteone]

the 5 second  wait is put in to  make sure that there are no files currently uploading to the directory.  So when the script is started I get the files and file sizes and put that into array #1 then wait 5 seconds and and get the names and sized again in a new array #2.

 

I then compare the two arrays and if they are not the same that means the file sizes has changed so an upload is happening.

[denoteone]

Thanks  litebearer!