PHP 5 and 7 with MAMP

bash_profile

export PHP7=1; // on opening your terminal

// Goes in your ~/.bash_profile
if [ -z "$PHP7"  ]; then
	export DRUSH_PHP='/Applications/MAMP/bin/php/php7.0.0/bin/php'
	export PATH=/Applications/MAMP/Library/bin/:/Applications/MAMP/bin/php/php7.0.0/bin/:~/bin:$JAVA_HOME/bin:$PATH
else
	export DRUSH_PHP='/Applications/MAMP/bin/php/php5.5.26/bin/php'
	export PATH=/Applications/MAMP/Library/bin/:/Applications/MAMP/bin/php/php5.5.26/bin/:~/bin:$JAVA_HOME/bin:$PATH
fi