You can check how many times a specific page or a resource was requested using AWK:
$ awk '{print $7}' access.log | sort | uniq -c | sort -rn
The preceding command will sort the requested resources from the highest requested resource to the lowest:
The resources could be images, text files, or CSS files.
If you want to look at the requested PHP files, you can use grep to get PHP files only:
$ awk ' ($7 ~ /php/) {print $7}' access.log | sort | uniq -c | sort -nr
Alongside each page, there is the number of hits.
You can grab ...