code to delete images that aren't referenced by files

[jennyp]

I'm wondering if the following can be achieved easily enough with some PHP scripting:

What I'd like to do is, read the names of all the image files in a certain web directory, and search for any occurrence of each of these image names within all the text files (html/css/php/whatever) of some other directories, and if they're not referenced there, to delete the images from the image directory.

The idea is to throw away images that were made during the development of a website but which aren't any more being actually referenced by the web pages.

I'd be grateful for any pointers. Thanks.

[devinemke]

i'm not going to write out all of the code but the basic idea is this:

1. open the text directory using [man]opendir[/man]
2. loop thru the text directory using [man]readdir[/man]
3. spool the contents of each text file into a [man]string[/man] using [man]file_get_contents[/man]
4. then open and loop thru the image directory using the same functions mentioned above
5. on each loop iteration check to see if that image filename occurs within the text string using [man]strpos[/man]. if a match is found then [man]unlink[/man] the image file.

[jennyp]

Thank you - I'll try that approach and see how I get on