<?php $obj= array( ( object ) array( 'post_title'=> 'hello1' , 'test'=> 'game' ) , ( object ) array( 'post_title'=> 'hello2' , 'test1'=> 'game' ) , ( object ) array( 'post_title'=> 'hello3' , 'test2'=> 'game' ) , ); var_dump( wp_list_pluck( $obj , 'post_title' ) ); echo $obj[0]->post_title; ?>