# find . -name *.php -exec sed -i -e "s|finddddd|replaceeeee|g" {} ;

# find . -name *.php -exec sed -i -e "s|finddddd|replaceeeee|g" {} ; | wc -l
0

find . -name *.php -exec sed -i -e "s|finddddd|replaceeeee|g" {}| wc -l;
find: missing argument to `-exec'
0

find . -name *.php -exec sed -i -e "s|finddddd|replaceeeee|g" | wc -l {} ;
wc: {}: No such file or directory
wc: ;: No such file or directory
0 total
find: missing argument to `-exec'