The following packages are in testing, and available for download in the testing repositories:

• php56w-pecl-xdebug 2.5.5-1
• php70w-pecl-xdebug 2.5.5-1
• php71w-pecl-xdebug 2.5.5-1

Assuming you have the Webtatic repositories set up (see Yum Repository), you can update using:

yum update <package> --enablerepo=webtatic-testing