I think as a PhD student, you should publish only in high IF journals rather than conferences. But if it is conference, then it should be at least "peer reviewed" one!
Some conferences first ask for an abstract. After the selection based on only abstracts they ask for a limited page number paper (like 3-4 pages). After all, you receive no any comments from any Reviewers. At best case, some few typographical comments from the editor.
Is this called peer reviewed?