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+====== Change the Memory Limit for PHP Scripts ======
+**WARNING:** Always make a backup of php.ini before making changes to it.
+If you are doing this as root, you do not need to use 'sudo' at the beginning of the commands.
+  - Open your php.ini file. (Most often it is in the /etc/ directory)
+      <file>sudo nano /etc/php.ini</file>
+  - Locate the following setting:
+      <file>memory_limit '' 8M ; Maximum amount of memory a script may consume (8MB)</file>
+  - Replace the '8M' with the desired setting, ie Cacti recommends 512M or better.
+  - Press 'Ctrl+O' and then 'Enter'.
+  - Press 'Ctrl+X' to exit.
+  - Restart Apache Server with the following command:
+      <file>sudo /etc/init.d/httpd restart</file>
+-- Main.FredPettis - 02 Jun 2009