Need Zend Optimizer on server

Hi, i am just testing some programs with php, it always shows"Fatal error: Unable to read 1601 bytes in /home/.isty/catchsha/ on line 0", so i check program found it need zend optimizer,but server is not provider, can we get sever install it or other solution thx

My server support zend optimizer. Maybe you need to change php version to 5.1

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