Remove usage of xml_set_object() function #507

Job	Run time
Static Analysis	1m 47s
Test on php 7.1 and ubuntu-latest	1m 44s
Test on php 7.2 and ubuntu-latest	1m 14s
Test on php 7.3 and ubuntu-latest	2m 10s
Test on php 7.4 and ubuntu-latest	1m 54s
Test on php 8.0 and ubuntu-latest	2m 9s
Test on php 8.1 and ubuntu-latest	1m 43s
Test on php 8.2 and ubuntu-latest	1m 35s
Test on php 5.5 and ubuntu-latest	4m 24s
Test on php 5.6 and ubuntu-latest	4m 33s
Test on php 7.0 and ubuntu-latest	3m 11s
Test on php 8.2 and windows-latest	1m 49s
Test on php 8.3 and ubuntu-latest	1m 38s
Test on php nightly and ubuntu-latest	2m 1s
	31m 52s

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