This site utilizes JavaScript to function correctly. Looks like it's disabled on your browser. Please enable it for your best experience.

For instructions on enabling JavaScript, click here

Skip to main content

Just Host Web Hosting Help

Zend Optimizer cannot be found

My Error Log gives an error that looks like "Zend Optimizer for PHP x.x.x Cannot Be Found" or similar -- How do I Confirm Zend Optimizer is configured properly?

The Zend Optimizer is a module that improves the performance of PHP code. It is often used to help dynamic sites that use PHP have better page load performance; some sites may also require this--if it's missing, the site will fail to load properly, and give an error similar to this one:
PHP Warning: Zend Optimizer for PHP 4.4.x cannot be found (expected at '/usr/local/Zend/lib/Optimizer-2.5.10/php-4.4.x/ZendOptimizer.so') - try reinstalling the Zend Optimizer in Unknown on line 0

This may be visible directly on the website, or in your php error logs, or both. Zend Optimizer is installed on the server, and just needs to be enabled in the php.ini file. You may need to install the default php.ini file as well.

If you are still seeing the error, please copy down the path to the script seeing issues; then, using either File Manager or FTP or Bash (terminal), verify the following:

  • The directory has a php.ini file
  • The php.ini file has no capitalizations in the filename, and has permissions of 440 or greater.
  • The php.ini is newly created, to rule out possible PHP version mismatches.

In most cases, you'll find you just need to enable Zend Optimizer on your account.

If none of these steps solve your problem, please contact our Support department for further assistance, as you may be experiencing a server issue only capable of being repaired by our Support and Administrative team.

Knowledgebase Article 88,410 views bookmark tags: found optimizer zend


Was this resource helpful?

Did this resolve your issue?


Please add any other comments or suggestions about this content:





Recommended Help Content

How do I enable the Zend Optimizer on my account?
Knowledgebase Article 106,360 views tags: optimizer php zend

Script executed with a cron job requires a specific php.ini file to be used.
Knowledgebase Article 126,732 views tags: command cron cronjob crontab custom line optimizer php zend

When logging into phpMyAdmin, why do I get a 404 not found error?
Knowledgebase Article 91,015 views tags: database found phpmyadmin select

Related Help Content

How to customize your html or php error pages.
Knowledgebase Article 105,061 views tags: errors php

I get this with some of my php files: Fatal error: Unable to read X bytes in /home/user/public_html/myfile.php on line Y
Knowledgebase Article 124,735 views tags: fatal php read unable

This article outlines what to do if you find your local IP address has been blacklisted.
Knowledgebase Article 60,162 views tags: access addresses anti blacklist blacklisted blocked denied ip local malware

This article will explain how to add a PHP handler to your .htaccess files. This is useful if you want to customize the version of PHP that runs your PHP files.
Knowledgebase Article 220,285 views tags: htaccess php

I get the following database connection error: Warning: mysql_connect() [function.mysql-connect]: Host 'host#.Justhost.com' is blocked because of many connection errors; unblock with 'mysqlad
Knowledgebase Article 159,494 views tags: blocked connection host localhost mysql

Look for the error message that most closely matches the one you received.
Knowledgebase Article 70,446 views tags: email error

Available PHP Memory Exhausted.
Knowledgebase Article 212,954 views tags: exceeded fatal memory php wordpress

How do I install Ioncube into a Just Host hosting account?
Knowledgebase Article 204,671 views tags: clientexec cube encoder extension ioncube php zend

** Google ad credits are only available to customers in the United States, Canada, and the United Kingdom at this time.

¹ VAT (Value Added Tax) is not included in our advertised price and will be charged separately and itemized on invoices and billing information. Standard VAT rates based on EU Member State regulations may apply. Learn more.