Refactor getRealRowCountTable #925

Job	Run time
Test on PHP 82 (amd64)	48s
Test on PHP 82 (arm64/v8)	4m 9s
Test on PHP 82 (arm/v7)	4m 17s
Test on PHP 82 (i386)	58s
Test on PHP 82 (ppc64le)	4m 3s
Test on PHP 82 (s390x)	4m 26s
Test on PHP 8.2, locked and ubuntu-latest	3m 44s
Test on PHP 8.2, highest and ubuntu-latest	3m 44s
Test on PHP 8.3, locked and ubuntu-latest	3m 45s
Test on PHP 8.3, highest and ubuntu-latest	3m 38s
Test on PHP 8.4, locked and ubuntu-latest	2m 51s
Test on PHP 8.4, highest and ubuntu-latest	3m 28s
Test on PHP 8.5, locked and ubuntu-latest	3m 43s
Test on PHP (+ ext-dbase) 8.2 and ubuntu-latest	3m 53s
	47m 27s

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