I have used Zend framework with 1.7.0 and Apache got crashed on $table->Select();
1.7.0 have a bug and Apache got crashed when you use PDO. There are several ways in which people suggest copying dll and other stuff but i do recommend the update. As in 1.7.1, Xampp team have recompiled mysql libraries.
You can get the upgrade installer (xampp-win32-upgrade-1.7.0-1.7.1-installer.exe) here at
After upgrading to 1.7.1 this issue will be resolved and your existing website will be working as usual.
NOTE:- MAKE SURE TO HAVE BACKUP OF YOUR EXISTING WEBSITES.
Some other helpful links are