How to install PHP

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.  For more information on PHP, visit their website at www.php.net.

Version

This documentation was written for PHP 5.1.6 but may be usefull with other versions.

How to install PHP

1. Run the yum install command
   yum install php

How to configure PHP

1. Increase PHP script memory limit
   In the /etc/php.ini file replace memory_limit = 16M with memory_limit = 128M
2. Increase PHP script max execution time
   In the /etc/php.ini file replace max_execution_time = 30 with max_execution_time = 120
3. Increase PHP script max upload size
   In the /etc/php.ini file replace max_upload_size = 2M with max_upload_size = 50M
   In the /etc/php.ini file replace post_max_size = 8M with post_max_size = 50M
4. Create the /usr/share/phpinfo folder
   mkdir /usr/share/phpinfo
5. Create the /usr/share/phpinfo/index.php file with the following text:
   <?php
     phpinfo();
   ?>
6. Change permissions on the index.php file
   chmod 0755 /usr/share/phpinfo/index.php
7. Create the /etc/httpd/conf.d/phpinfo.conf file with the following text:
   # phpinfo - PHP utility function for displaying php configuration
   #
   # Allows only localhost by default
   
   Alias /phpinfo /usr/share/phpinfo
   <Directory /usr/share/phpinfo/>
      order deny,allow
      deny from all
      allow from 127.0.0.1
   </Directory>
8. Restart Apache Server
   service httpd restart

Test

Visit localhost/phpinfo in your web browser. You should see the infamous phpinfo output. If the address bar changes to somthing other than http://localhost/phpinfo/, than somthing went wrong while following the instructions and your browser has interpreted this as a search. Try following the instruction again. If it still doesn't work, send me an email via my contact page and let me know somthing isn't working right. If it did work, you have successfully installed PHP.