With MAMP PRO you can easily increase the PHP memory limit. Therefore you simply have to change some data within the php.ini file.

Here is how it works:

1. Start MAMP PRO
2. Stop the server if it’s running
3. Choose Menu -> File -> Edit Template -> PHP5 php.ini (If you want to change the memory limit for PHP5, then choose PHP5 php.ini)
4. The PHP ini file will be opened.
5. If a dialogue box pops up, read it and confirm with OK
6. Search (Command-F) for “memory_limit” (without quotes)
7. You should get the following line:
   memory_limit = 8M ; Maximum amount of memory a script may consume (8M)
8. Now you can change the default value of 8M. For instance. into 32M or even more (like 128M)
9. Save (Command-S) your changes.
10. Close (Command-W) the file.
11. Start the Server.
12. That’s it!