I am using a command similar to this one:
find . -name \"*.php\" -exec chmod 755 {} \\;
Although, I am not using chmod, I am using a differ
find . -name "*.php" -exec chmod 755 {} + -printf '.' | wc -c
If you use + instead of ";", find will try to process chmod 755 on many files in parallel.
You can perform additional commands after the first one, here, for example print a dot, and count the dots in the end.