php tests fail in CI

mysqlifailtests+=( mysqli_change_user ) # will below 3 - fail on 7.1, not mdb-10.2. TODO
mysqlifailtests+=( mysqli_change_user_old ) # TODO
mysqlifailtests+=( mysqli_change_user_oo ) # TODO
mysqlifailtests+=( mysqli_class_mysqli_properties_no_conn ) # TODO
pdofailtests+=( pdo_mysql_prepare_load_data ) # 8.0, not 7.4 TODO investigate
pdofailtests+=( pdo_mysql_attr_oracle_nulls ) # 8.0, not 7.4. TODO investigate

Unsure why. The cause of these failures needs to be investigated