Why the SQL query giving a bool(false) but running on the sql server.?

I have the SQL query that is fetching data from multiple columns and fields, with the primary and foreign keys. i am trying to run the code on the search script but on var_dump of the query, i get the query as follows:

SELECT `vendor`.`v_id`,`vendor`.`v_name`,`vendor`.`v_img`,`contacts`.`cont_id`,`contacts`.`cont_addr`,`contacts`.`cont_phn`,`fooditem`.`fi_id`,`fooditem`.`item_name`,`fooditem`.`fi_price`,`fooditem`.`fc_desc`,`vendor`.`v_id`,`vendor`.`v_name`,`vendor`.`v_img`,`contacts`.`cont_id`,`contacts`.`cont_addr`,`contacts`.`cont_phn`,`fooditem`.`fi_id`,`fooditem`.`item_name`,`fooditem`.`fi_price`,`fooditem`.`fc_desc` FROM vendor LEFT JOIN `stfood`.`contacts` ON `vendor`.`cont_id` = `contacts`.`cont_id` LEFT JOIN `stfood`.`fooditem` ON `vendor`.`v_id` = `fooditem`.`v_id` WHERE `vendor`.`v_name` LIKE '%ven%' OR `fooditem`.`item_name` LIKE '%ven%'

and when i proceed forward with the var_dump of the above query i get a bool(false) but this query runs flawlessly on PHP MyAdmin Can anyone tell me why is this so?? I am confused on this... Thanks in advance.