Using WHERE clause with multiple left join in php - php

Question

I successfully did a LEFT JOIN using PHP, however, I am having a little difficulty adding a WHERE clause to enable me select unique record from all existing details in all the tables where a match is found.
This is my code :
<?php
$sql = "SELECT staff.*, staff_bio.bio_id, staff_cert.*, staff_edu.*, staff_pos.*, staff_res.*\n"
. " FROM staff staff\n"
. "LEFT JOIN staff_bio \n"
. " ON staff.nuc_id = staff_bio.bio_id\n"
. "LEFT JOIN staff_cert\n"
. " ON staff.nuc_id = staff_cert.pro_id\n"
. "LEFT JOIN staff_edu\n"
. " ON staff.nuc_id = staff_edu.edu_id\n"
. "LEFT JOIN staff_pos\n"
. " ON staff.nuc_id = staff_pos.rank_id\n"
. "LEFT JOIN staff_res\n"
. " ON staff.nuc_id = staff_res.res_id\n"
. "WHERE staff.nuc_id = $userRow['staff_no'] ";//this is where i'm having issues
?>
My final output should be something like :
<?php echo $userRow['sch_name']; ?>
<?php echo $userRow['fac_name']; ?>
<?php echo $userRow['dep_name']; ?>
All coming from different tables. Any help will be greatly appreciated.

Answer 1

You can do like this:
. " WHERE staff.nuc_id = ".$userRow['staff_no'] ;//this is where i'm having issues
Why do you need to concatenate query, it can be written as if you want formatting :
<?php
$sql = "SELECT staff.*, staff_bio.bio_id, staff_cert.*, staff_edu.*, staff_pos.*, staff_res.*
FROM staff staff
LEFT JOIN staff_bio
ON staff.nuc_id = staff_bio.bio_id
LEFT JOIN staff_cert
ON staff.nuc_id = staff_cert.pro_id
LEFT JOIN staff_edu
ON staff.nuc_id = staff_edu.edu_id
LEFT JOIN staff_pos
ON staff.nuc_id = staff_pos.rank_id
LEFT JOIN staff_res
ON staff.nuc_id = staff_res.res_id
WHERE staff.nuc_id = ".$userRow['staff_no'];//this is where i'm having issues
?>