AJAX Success Function using JS substr() fails in WP 4.1 vs 4.0
FWIW… It APPEARS to have been a misconfiguration in the PHP.INI on a new Development Server (WAMP), which resulted in an unknown corruption of the code upon updating from wp4.0 to 4.1 such that PHP was injecting unwanted white space e.g. “\r\n\r\n…” in my AJAX responses (like a missing closing php ?> tag or someting?) … Read more