from command line or PHP, no matter what.
How to replace all the "http://example.com" strings with "//example.com" (relative protocol URL) on any CSS, JS, HTML, PHP and TPL file on a CentOS server? Possible by command line directly? THANK YOU :-)
Netbeans is one option.
Navigate to whatever folder you want to modify the pages in in the file explorer.
Hit CTRL+H
In the search box type "http" leave the replace box empty. Repeat with "https".
It will search and I believe it asks to confirm before changing your files. Idr.