Setup Xdebug in your system

1.Find your PHP ini file. 2.Run command “php –ini” to find loaded ini file.
3.Uncomment xdebug module.
zend_extension=”/Applications/MAMP/bin/php/php7.0.8/lib/php/extensions/no-debug-non-zts-20151012/xdebug.so”

4.Set below settings for xdebug

xdebug.remote_enable=1
xdebug.remote_host=127.0.0.1
xdebug.remote_connect_back=1    # Not safe for production servers
xdebug.remote_port=9000
xdebug.remote_handler=dbgp
xdebug.remote_mode=req
xdebug.remote_autostart=true
5.Set-up debugger with PHPStormOpen drop down and click on edit configuration as display in below screenshot.

Click on + icon and select PHP Web Page from the list.Under Configuration section set Server details and for that click on

• Step-out, Step-into, Continue, Terminate

Step-out: F8Step-Into: F7 Continue: F9

• Debugging step by step
• Inspect variables
• Watch variable
• Conditional debugging point