How to recursively find the desired string in php files?

Question

linux

Please tell me how to find text "text_example" in *.php files through the server console in all directories inside /var/www/html.
Thank you!

Answer 1

find /var/www/html -name '*.php' -exec grep -H "text" {} \;

Answer 2

cd /var/www/html
grep -r --include=*.php "text_example"