PHP have released an update to the 5.2.x version. Many people still have problems with the backwards compatibility of 5.3 and are still using 5.2.10. In this release which is a security bug-fix and if you are running 5.2.10 I would urge you to upgrade.

Security Enhancements and Fixes in PHP 5.2.11:

• Fixed certificate validation inside php_openssl_apply_verification_policy.
• Fixed sanity check for the color index in imagecolortransparent().
• Added missing sanity checks around exif processing.
• Fixed bug #44683 (popen crashes when an invalid mode is passed).

Key enhancements in PHP 5.2.11 include:

• Fixed regression in cURL extension that prevented flush of data to output defined as a file handle.
• A number of fixes for the FILTER_VALIDATE_EMAIL validation rule
• Fixed bug #49361 (wordwrap() wraps incorrectly on end of line boundaries).
• Fixed bug #48696 (ldap_read() segfaults with invalid parameters)
• Fixed bug #48645 (mb_convert_encoding() doesn’t understand hexadecimal html-entities).
• Fixed bug #48619 (imap_search ALL segfaults).
• Fixed bug #48400 (imap crashes when closing stream opened with OP_PROTOTYPE flag).
• Fixed bug #47351 (Memory leak in DateTime).
• Over 60 bug fixes.

For instructions on how to upgrade PHP please read: Upgrading PHP.