Web service based on SOAP

previously built a web service, data transmission is through json, now the demand is based on SOAP, look up some information is not very clear?
if it is based on SOAP, how to write the front-end html file?
or just change the data format to XML? when sending the request.

Mar.24,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1eafc00-2283.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eafc00-2283.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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