How can I add additional PHP versions to MAMP
MAMP takes only two highest versions of the PHP in the following folder /Application/MAMP/bin/php
As you can see here highest versions are 7.0.10 and 5.6.25
Now 7.0.10 version is removed and as you can see highest two versions are
5.6.25 and 5.5.38 as shown in preferences
Found a quick fix in the MAMP forums.
Basically it seems MAMP is only allowing 2 versions of PHP to show up. Quick fix, rename the folders you're not bothered about using, for me this meant adding an "X" to my /Applications/MAMP/bin/php/php5.4.10_X folder. Now 5.2.17 and 5.3.20 show up in the mamp prefs.
Done!
Edit - if the PHP version you require isn't in the PHP folder, you can download the version you require from http://www.mamp.info/en/downloads/
Edit - MAMP don't seem to provide links to the alternative PHP versions on the download page any more. Use WayBackMachine https://web.archive.org/web/20180131074715/http://www.mamp.info/en/downloads/
If you need to be able to switch between more than two versions at a time, you can use the following to change the version of PHP manually.
MAMP automatically rewrites the following line in your /Applications/MAMP/conf/apache/httpd.conf file when it restarts based on the settings in preferences. You can comment out this line and add the second one to the end of your file:
# Comment this out just under all the modules loaded
# LoadModule php5_module /Applications/MAMP/bin/php/php5.x.x/modules/libphp5.so
At the bottom of the httpd.conf file, you'll see where additional configurations are loaded from the extra folder. Add this to the bottom of the httpd.conf file
# PHP Version Change
Include /Applications/MAMP/conf/apache/extra/httpd-php.conf
Then create a new file here: /Applications/MAMP/conf/apache/extra/httpd-php.conf
# Uncomment the version of PHP you want to run with MAMP
# LoadModule php5_module /Applications/MAMP/bin/php/php5.2.17/modules/libphp5.so
# LoadModule php5_module /Applications/MAMP/bin/php/php5.3.27/modules/libphp5.so
# LoadModule php5_module /Applications/MAMP/bin/php/php5.4.19/modules/libphp5.so
LoadModule php5_module /Applications/MAMP/bin/php/php5.5.3/modules/libphp5.so
After you have this setup, just uncomment the version of PHP you want to use and restart the servers!