Which language should i learn before this language?

Answer 1

www.sololearn.com/faq

Answer 2

As you have mentioned php I should believe that you are interested in web development...
so you should start with html -> css -> javascript -> jquery -> php....
for better suggestions visit the faq page given by hatsy ..... its mich helpful....
and , Best of Luck for a successful sololearn journey

Answer 3

+1 to Chirag Ghosh

If you like PHP, learn HTML, CSS, BOOTSTRAP JAVASCRIPT, JQUERY, ANGULARJS AND REACTJS, NODEJS.