How To Enable Php 5.5 Opcache on Ubuntu 14.04

How To Enable Php 5.5 Opcache on Ubuntu 14.04

To enable Php 5.5 Opcache on Ubuntu 14.04, follow these steps. First, update your server’s APT package list using the following command: sudo apt-get update.

Then, install the Opcache module by running this command: sudo apt-get install php5-opcache. Once the module is installed, enable it by opening the opcache configuration file: sudo nano /etc/php5/mods-available/opcache. ini. In the file, locate the line that says “opcache. enable=0” and change it to “opcache.

enable=1″. Save the changes and exit the file. Finally, restart the Apache web server using this command: sudo service apache2 restart. Introducing Opcache for Php 5. 5 on Ubuntu 14. 04 involves a few simple steps. By enabling the Opcache module, you can improve the performance and speed of your website by caching the compiled PHP scripts. This concise guide will walk you through the process of enabling Opcache on your Ubuntu 14. 04 server. Follow the steps carefully to ensure a smooth implementation.

Enabling Php 5.5 Opcache

One of the most effective ways to improve PHP performance on your Ubuntu 14.04 server is by enabling PHP 5.5 Opcache. Opcache is a bytecode cache that can greatly optimize the execution time of PHP scripts by storing precompiled script bytecode in memory. This eliminates the need for PHP to recompile the script on each request, resulting in faster page load times and improved overall performance.

Checking Php Version

Before we proceed with enabling Opcache, it’s important to check your current PHP version. To do this, you can use the following command:

php -v

This command will display the installed PHP version on your Ubuntu 14.04 server. Make sure you are running PHP 5.5 or later, as Opcache is available starting from PHP 5.5.

Installing Php Opcache

To install Opcache on your Ubuntu 14.04 server, you can follow these steps:

  1. Open the terminal and update your package list by running the command:

sudo apt-get update

  1. Install the Opcache module by running the command:

sudo apt-get install php5-opcache

After the installation is complete, the Opcache module will be enabled by default. However, we need to configure it to optimize the PHP performance further.

Configuring Php Opcache

To configure PHP Opcache, you will need to edit the php.ini configuration file. Follow these steps:

  1. Open the php.ini file in a text editor:

sudo nano /etc/php5/apache2/php.ini

  1. Find the following line, which is commented out by default:


Uncomment this line by removing the semicolon at the beginning:


Enabling Opcache is as simple as that, but there are additional configuration parameters that you can tweak to optimize its performance even further.

You can set the amount of memory allocated for Opcache by modifying the following line:


This line specifies the amount of memory in megabytes (MB) that Opcache will use to store precompiled scripts. You can adjust this value based on your server’s available memory and the size of your PHP applications.

Another important parameter is the validation frequency, which determines how often Opcache checks for updates to the PHP scripts. By default, this value is set to 2, meaning Opcache checks for updates on every 2nd request. You can adjust this frequency by modifying the following line:


This line sets the validation frequency to 60 seconds. Modify this value according to your application’s update frequency.

Once you have made the necessary changes, save and close the php.ini file.

Finally, restart the Apache web server for the changes to take effect:

sudo service apache2 restart

That’s it! You have successfully enabled and configured PHP 5.5 Opcache on your Ubuntu 14.04 server. Enjoy the improved performance and faster page load times for your PHP applications!

Verifying Php Opcache

This tutorial provides step-by-step instructions on how to enable PHP 5. 5 OPCache on Ubuntu 14. 04 for enhanced performance. Verify the OPCache settings effectively to optimize your PHP code.

Once you have successfully enabled PHP Opcache on your Ubuntu 14.04 server, it’s important to verify that it is working correctly. Now, we will discuss how to test and monitor the opcache usage to ensure optimal performance.

Testing Php Opcache

Testing the PHP Opcache is a crucial step to ensure that it is functioning as expected. To do this, you can create a simple PHP script that outputs information about the opcache status. Here’s an example code snippet:


Save this code as a file with a .php extension, such as opcache-test.php, and access it through your web browser. If PHP Opcache is enabled and working, you should see a detailed output containing information about the opcache status, such as memory usage, cached scripts, and hits/misses.

Monitoring Opcache Usage

Monitoring the opcache usage is essential to ensure that it is properly caching and optimizing PHP scripts. By keeping an eye on the usage, you can identify any potential issues or bottlenecks. One way to monitor the opcache usage is through the Zend OPcache GUI provided by the Zend Server.

To set up the Zend OPcache GUI, follow these steps:

  1. Install Zend Server by running the following command:
sudo apt-get install zend-server-php
  1. Access the Zend OPcache GUI by visiting http://your-server-ip-address:10081/ZendServer/monitor/opcache in your web browser.
  2. Log in with your Zend Server credentials.
  3. Once logged in, you will be able to view detailed information about the opcache, including memory usage, statistics, and cached files. This can help you identify any potential issues and optimize the opcache configuration accordingly.

By regularly monitoring the opcache usage, you can ensure that it is functioning optimally and adjust the configuration if needed. This can greatly enhance the performance of your PHP applications running on Ubuntu 14.04.


Frequently Asked Questions Of How To Enable Php 5.5 Opcache On Ubuntu 14.04

How Do I Enable Opcache In Php?

To enable OPCache in PHP, add the following line of code to your php. ini file: opcache. enable=1 Save the changes and restart your web server for the changes to take effect. OPCache will now be enabled for your PHP environment.

How Do I Know If Opcache Is Enabled?

To check if OPCache is enabled, you can use phpinfo() function or create a php file with “<? php phpinfo();? >” code and run it on your server. Look for the “OPCache” section and check if it says “Enabled”.

How To Install Php On Ubuntu 14?

To install PHP on Ubuntu 14, open the terminal and run the command: “sudo apt-get install php5”. Once installation is complete, check PHP version with “php -v”.

How To Enable Php Opcode Caching In Xampp?

To enable PHP opcode caching in xampp, follow these steps: 1. Open the php. ini file in your xampp installation folder. 2. Locate the “opcache. enable” line and set it to “1”. 3. Save the changes and restart the Apache server.

4. Verify the opcode caching is enabled by checking the phpinfo page.


To conclude, enabling PHP 5. 5 Opcache on Ubuntu 14. 04 can greatly enhance the performance of your website. By optimizing opcode caching, your website will load faster, resulting in improved user experience and higher search engine rankings. With the step-by-step guide provided here, you can easily configure and enable Opcache on your Ubuntu server.

Start reaping the benefits of faster loading times and smoother operations today.

Similar Posts

Leave a Reply