Validator w3 RSS Invalid - RSS not showing the feed by using PHP
14832
How to generate XML file dynamically using PHP?
51987
What other hidden or inobvious RSS feeds are available on Stack Exchange and its sites?
67764
Rails: What's a good way to validate links (URLs)?
5179
Validate PHP form field if not left empty
138090
Validation user message not showing
78923
How to put an error check for simplexml_load_file?
68466
W3C Validator error: Parse Error opacity=60
47549
Anonymous users can't see new content type in feed
56781
Why php tag is not working in html file?
42903
PHP eval issue with PHP + HTML code
74155
How do I get PHP errors to display?
142527
Spring3 MVC: Validation not working
19321
What is the fastest, most efficient way to get alerts for Stack Overflow feeds?
4589
PHP validation/regex for URL
25349
Does PHP's filter_var FILTER_VALIDATE_EMAIL actually work?
122745
Is a link without the protocol valid XHTML? i.e.
11200
How to prevent XSS with HTML/PHP?