1. Open MAMP Pro and go to File > Edit Template > PHP5 php.ini
2. add below : Make sure path is correct
[xdebug]
zend_extension=”/Application/Zend/Zend Studio for Eclipse – 6.1.1/
plugins/org.zend.php.debug.debugger.macosx_5.2.15.v20080907/
resources/php5/ZendDebugger.so”
3. Open Zend Studio and go to Preferences > PHP > PHP Executables
4. Add Executable path ex : /Applications/MAMP/bin/php5/bin/php