A Safari extension to enable PHP debugging from Safari 12, using Xdebug.
This extension creates a single toolbar button in Safari windows, which enables (or disables) debugging on a per-domain basis.
You can customise the IDE Key from the Application's preferences window (eg. for MacGDBp, Komodo, or Eclipse).
The "busy" screenshot shows a debugging session using MacGDBp, highlighting the Safari Toolbar item (circled).
You must have Xdebug correctly installed in your web-server. Details about Xdebug can be found at xdebug.org.
With Family Sharing set up, up to six family members can use this app.