mysql_num_rows() expects parameter 1 to be resource, boolean given

[DCarl]

My code is,

 

<?php

// This block allows our program to access the MySQL database.

// Stores your login information in PHP variables

require_once '223login.php';

// Accesses the login information to connect to the MySQL server using your credentials and database

$db_server = mysql_connect($db_hostname, $db_username, $db_password);

// This provides the error message that will appear if your credentials or database are invalid

if (!$db_server) die("Unable to connect to MySQL: " . mysql_error());

mysql_select_db($db_database)

or die("Unable to select database: " . mysql_error());

 

// Store the query string from 2.2.3.A Step 17

$query = "SELECT * FROM requests WHERE model_id=1";

 

// Searches the database returning results that match the query

// Results come in a table stored in $requests_for_model

$requests_for_model = mysql_query($query);

// The mysql_num_rows function returns an integer representation of number of rows for the table passed as an argument

$number_of_requests = mysql_num_rows($requests_for_model);

 

for ($current_row = 0; $current_row < $number_of_requests; $current_row++)

{

// walker variable (through rows in the table)

$request = mysql_fetch_row($requests_for_model);

// query directed to get a table containing the one row that has a store matching the store ID in the current request

$query = "SELECT * FROM store_info WHERE store_id='" . $request[1] . "'";

$store_requesting = mysql_query($query); // A table containing the store

$store = mysql_fetch_row($store_requesting); // Get the only row in the table (unique store ID number guarantees this)

echo $store[2]; // output the 2nd item in the row for that store, which is the city

if ($current_row < $number_of_requests - 1) // Makes sure commas are only printed after results that are not the last

{

echo ", ";

}

} 

 

?>

 

I do not know how to fix this. Help much appreciated. 

 

[DCarl]

ignore the //etc. It is instructions for my class.

[mac_gyver]

this is a (very) common error. did you search for it to find what it means and to find out how to determine what is causing it?

 

see this link - http://forums.phpfreaks.com/topic/273121-readme-php-resources-faqs/?do=findComment&comment=1428660