MySQL doesn't output PHP query result
Question
I wrote this simple script based on my database table (db_member) with an auto incrementing row I'd and some other columns: 1: 'privilege' column, privilege values can be one of 'A', 'B' or 'C'.
2: 'username' column, for respective usernames
Objective: Output the 'username' on a row where the 'privilege' value is 'A'. There's only one such row in the database.
Environment: Windows 7 Ultimate. XAMPP 1.8.2. The XAMPP installation has Apache 2.4.10, MySQL 5.4.39, PHP 5.4.31. Dreamweaver CS6 and Mozilla Firefox,
Observation: The script runs in the browser. However, the exact space for the script turns up empty even in firefox source code. Neither a result nor an error.
Been hammering my head against this for two weeks now. And yes.... I have searched the web to no avail.
Script:
<?php
error_reporting(1);
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>My site</title>
</head>
<body>
<div id="container">
<header>
</header>
<section>
<h1>Testing, testing, 1, 2, 3.</h1>
<?php
$host = 'localhost';
$user = 'dbuser';
$password = 'userpass';
$database_name = 'dbname';
//Establish a connection with MySQL
$db = mysql_connect($host, $user, $password) or
die('<b>Sorry!<br>Unable to connect to the database .<br/>Please try later.</b>');
//Ensure the correct database is accessed
mysql_select_db($database_name, $db) or die(mysql_error($db));
$query = 'SELECT * FROM db_members WHERE privilege = "A"';
$result = mysql_query($query, $db) or die('Can\'t connect to database');
mysql_fetch_array($result);
if(mysql_num_rows($result) > 0)
{
echo $row['username'];
}
else{
echo '<b>There\'s no result.</b>';
}
?>
</section>
</div><!--End of container-->
</body>
</html>
2 answers
solution1
2 2015-05-02 08:39:39
You have not collected mysql_fetch_array($result); result in $row
$row= mysql_fetch_array($result);
solution2
0 ACCPTED 2015-05-02 09:40:57
You have 2 issues with your script
You need to remove extra single quote after opening php tag at the first line
<?php'Before using $row, you need to assign it a value:
$row = mysql_fetch_array($result); if(mysql_num_rows($result) > 0) { echo $row['username']; } else { echo '<b>There\\'s no result.</b>'; }Note: The code above shall only load one row from database, if you want to load multiple rows, then you need to use WHILE loop
while ($row = mysql_fetch_array($result)) { echo $row['username']; } else { echo '<b>There\\'s no result.</b>'; }
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