It todays Web Hosting Tutorial we are going to cover how to change your PHP file upload limit to avoind the following error:

‘Fatal error: Allowed memory size of 8388608 bytes exhausted’?

PHP has a built-in limit on the amount of memory it will allocate. If that limit is reached, the process will exit with this error message. This is usually the result of the PHP script trying to load a large file, such as an image, into memory all at once. While it is better if you can arrange for the script not to do such things, it is also possible to increase the memory limit some to avoid this problem. To do that, edit the php.ini file with your PHP scripts (create it if it does not exist) and add the following line:

memory_limit=16M

You should replace the ’16′ with whatever value is appropriate. The default is 8M (8 megabytes, the 8388608 bytes from the error message).

Thats it! You’ve just increased your PHP file upload limit. Well done you!

Click here to find out how to create a custom php.ini file.

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My PHP script gives the error ‘Call to undefined function: mysql_connect()’

This is usually due to a faulty php.ini file causing the PHP MySQL functions to be undefined. A custom php.ini file should not need to contain more than a very few lines to override the specific necessary directives. Using a php.ini found on other webservers or examples given on PHP-related websites will likely cause problems such as this.

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3. How to create a custom php.ini file

There are some variables in the php.ini file that can be overwritten, a common request is how to change the PHP file upload limit.

You can do this by creating a custom php.ini file in the directory you want to use (where your script resides).

Here is an example;

On your computer open a new document in Notepad, inside enter the command;

upload_max_filesize = 5M
post_max_size = 5M

(this example shows the limit being set to 5MB, you can change this to your required max file/post size.

Then save the file and name it php.ini and upload it to the directory where your scripts reside.

For PHP5, use php5.ini instead of php.ini.

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