Calling a mysql query inside another mysql query while loop - php

Question

include "mysql.php";
$query= "SELECT ID,name,displayname,established,summary,searchlink,imagename,image FROM institutions ORDER BY rand() ";
$result=mysql_query($query,$db);
while($row=mysql_fetch_array($result))
{
echo "<div class='grid-item item1' style='background: ".ran_col().";'>";
$query1= "SELECT content FROM ".$row['name']." limit 1";
$result1=mysql_query($query1,$db);
while($row1=mysql_fetch_array($result1))
{
echo "<div class='content-short' data-id=".$row['name'].">";
$string = $row1['content'];
if (strlen($string) > 200)
{
$trimstring = substr($string, 0,200). '...';
}
else
{
$trimstring = substr($string,0). '...';
}
echo $trimstring;
echo "</div>";
}
echo <"/div">;
}
What code should do:
The code should grab data from institution table and after that $row['name'] should be used as table for next mysql query where from that $row['name'] table $row['content'] should be grabbed
but it is not working as expeted

Answer 1

You are using same variable everywhere. Change them to
include "mysql.php";
$query= "SELECT ID,name,displayname,established,summary,searchlink,imagename,image FROM institutions ORDER BY rand() ";
$result=mysql_query($query,$db);
while($row=mysql_fetch_array($result))
{
echo "<div class='grid-item item1' style='background: ".ran_col().";'>";
$query1= "SELECT content FROM ".$row['name']." limit 1";
$result1=mysql_query($query1,$db);
while($row1=mysql_fetch_array($result1))
{
echo "<div class='content-short' data-id=".$row['name'].">";
$string = $row1['content'];
if (strlen($string) > 200)
{
$trimstring = substr($string, 0,200). '...';
}
else
{
$trimstring = substr($string,0). '...';
}
echo $trimstring;
echo "</div>";
}
echo <"/div">;
}
EDIT:
Also your query is wrong
$query1= "SELECT content FROM ".$row['name']" limit 1";
to
$query1= "SELECT content FROM ".$row['name']." limit 1";