PHP: Adding security with http referer
50195
Determining Referer in PHP
106504
Non-https links to other StackExchange sites in User profile when using https
88337
Session lost when switching from HTTP to HTTPS in PHP
120364
Switching to HTTPS - redirect question
130853
Cross-Origin Request Headers(CORS) with PHP headers
151387
How to password protect streaming videos with php
131186
Ajax using https on an http page
76864
What is the best way to check if a URL exists in PHP?
117717
What are the best PHP input sanitizing functions?
2940
How to add http:// if it doesn't exist in the URL
148131
Making a HTTP GET request with HTTP-Basic authentication
38959
Get page content that required authentication in PHP
50627
Prevent direct access to a php include file
107794
How to avoid the "http:" part in hyperref's \url?
124634
How to redirect from HTTPS to HTTP before server error?
109326
Logins with only HTTP - are they as insecure as I'm thinking?
22031
How do I transition to SSL without affecting PageRank?