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

• php71w 5.6.34-1
• php71w 7.0.28-1
• php71w 7.1.15-1
• php72w 7.2.3-1

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

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