What is the ratio of learning time between PHP and C?

What is the ratio of learning time between PHP and C? I have just finished learning C. I want to know how long it will take to finish learning PHP. if I have to spend 10 units of time after learning C, I 'd better add another html. let me have a number.
C php html
10

Reply to discussion (solution)

This person is not the same as a person. he or she is good at surgical knives, and he or she is good at playing the keyboard;

The basic rule is:
Hard learning-> quick understanding-> slow learning-> competent job-> as you like;

C requires 10 units of time, and PHP requires about 6 to 8 units of time;

Php is half of C.

It is indeed said above, but it may take 10 to be proficient.

After learning C, 12-14
7-8 if you have not learned C
Moderate and above C, 5-2