From where and how should i learn oop in php please help me

Answer 1

There is an OOP section in the PHP course here on SoloLearn. Otherwise try https://phpenthusiast.com/object-oriented-php-tutorials/create-classes-and-objects
And here are a couple of good video overviews with code examples:
https://youtu.be/5YaF8xTmxs4
https://youtu.be/dQxuYRNbL_M

Answer 2

Thanks