Fetch all rows for each row in a database - php

Question

I have a database with list of members. I execute a certain query it selects all members satisfying a condition. Then for each member in resultset, I want to send the details of all members generated in output and continue the loop until end of resultset. My current SQL query is:
if( $result || mysql_num_rows($result) != 0)
{
$string = "result";
while($r = mysql_fetch_array($result,MYSQL_ASSOC))
{
while($row = mysql_fetch_array($result,MYSQL_ASSOC))
{
$string .= "," . $row['latitude'] . "," . $row['longitude'];
$i = $i + 1;
}
**$registration_id = $r['user_id'];**
}
}
This does not give me an intended result? Any loopholes or bugs in this?

Answer 1

The first while fetches the entire row as an array. The second while made no sense.
if( $result || mysql_num_rows($result) != 0)
{
$string = "result";
while($r = mysql_fetch_array($result,MYSQL_ASSOC))
{
$string .= "," . $r['latitude'] . "," . $r['longitude'];
$i = $i + 1;
//Send notification to that member
}
}

Answer 2

Try without first WHILE
if( $result || mysql_num_rows($result) != 0)
{
$string = "result";
while($row = mysql_fetch_array($result,MYSQL_ASSOC))
{
$string .= "," . $row['latitude'] . "," . $row['longitude'];
$i = $i + 1;
}
//Send notification to that member
}

Answer 3

Try the foreach PHP loop
Like This;
Query the database and build an array of the members given the specific conditions and build the members array like this
$members = array(); // Intialize Empty Array
$sql = "SELECT member_name FROM .... WHERE ... "; // Ensure you're selecting one field here
while($result = $mysql_fetch_assoc(mysql_query($sql)))
{
$members[]=$result['member_name'];//This is the members array we're adding members to
}
//Get Members Array Count
$member_count = count($members);
//Check whether members array is more than 0
if($member_count != 0)
{
//Do for each loop to select profiles for each member in our array
foreach($members as $key)
{
$sql = " SELECT email,number,imei,device,latitude,longitude,userID FROM ... WHERE member_name LIKE '$key' ";
while($result = $mysql_fetch_assoc(mysql_query($sql)))
{
//print results here
.
.
.
}
}
}