Bluehost Web Hosting Help
Zend Optimizer is configured to work on any Bluehost server. To ensure it works properly for your account, you need to enable the "zend_extension" option in your php.ini in all folders where the scripts are that need it. You can enable this using the "PHP Configuration" option in cPanel. Follow the steps in the PHP Config article to install the default php.ini file to your account.
The simplest way is to enable Zend Optimizer before installing the default php.ini file. The configuration options are also listed if you want to copy the options and paste them in your current php.ini file.
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