Troubleshooting PHP interpreter issues can be tricky. A few days ago a client reported that one of his cron job scripts wasn’t being executed on his x86_64 CentOS 5.8 server, running Zend Server CE PHP 5.3.14. Troubleshooting such situations is usually straightforward, but this time PHP error messages I got were so ambiguous, and issues were so many at the same time, that I decided to write a blog post, hoping that it can be of some help for someone else.

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