Question

I have 2 files:

1. php file with code
2. org file with docs

How to create a link to a line in php file from org file? So clicking it will move the cursor to the appropriate line in php file.

Answer 1

Use this notation in the org mode to create a link:

[[/path/to/file.php::line][string-to-display]]

If you want the file name to be displayed, use just

[[/path/to/file.php::line]]

See Hyperlinks in the Org mode Info page for details and other ways to specify links.