I am having trouble getting my PHP to connect to my SQL Server and database. When I run the following code, the page does not load. It comes up with the following message in IE. I have the page in my htdocs folder for Apatche server. Other pages work fine, just not this one. (the only difference in the following code to my code is that I have changed the password - I actually have a database called my_database).
This error (HTTP 500 Internal Server Error) means that the website you are visiting had a server problem which prevented the webpage from displaying.
For more information about HTTP errors, see Help
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>Connect Test</title>
</head>
<body>
<h1>Connect Test</h1>
<?php
$link = mysqli_connect('localhost', 'root', 'my_password');
if (!$link)
{
$output = 'Unable to connect to the database server.';
include 'output.html.php';
exit();
}
if (!mysqli_set_charset($link, 'utf8'))
{
$output = 'Unable to set database connection encoding.';
include 'output.html.php';
exit();
}
if (!mysqli_select_db($link, 'my_database'))
{
$output = 'Unable to locate the my_database database.'
include 'output.html.php';
exit();
}
$output = 'Database connection established.';
include 'output.html.php';
?-->
</body>
</html>
This is my output page code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>Connect Test</title>
</head>
<body>
<h1>Output</h1>
<p><?php echo $output ?>;
?>
</body>
</html>
Your help you be appreciated. Thank you in advance.
Your first script is including the file output.html.php to display any results / errors, so you don’t need that HTML surrounding your PHP:
<?php
$link = mysqli_connect('localhost', 'root', 'my_password');
if (!$link)
{
$output = 'Unable to connect to the database server.';
include 'output.html.php';
exit();
}
if (!mysqli_set_charset($link, 'utf8'))
{
$output = 'Unable to set database connection encoding.';
include 'output.html.php';
exit();
}
if (!mysqli_select_db($link, 'my_database'))
{
$output = 'Unable to locate the my_database database.'
include 'output.html.php';
exit();
}
$output = 'Database connection established.';
include 'output.html.php';
Note: with pure PHP files (i.e. they don’t contain any markup) you don’t need to include the closing PHP tag (?>) and it’s recommended that you don’t
I now have the following. however, it still does not work. It just comes up with the same HTTP 500 Internal Server error as before.
<?php
$link = mysqli_connect('localhost', 'root', 'my_password');
if (!$link)
{
$output = 'Unable to connect to the database server.';
include 'output.html.php';
exit();
}
if (!mysqli_set_charset($link, 'utf8'))
{
$output = 'Unable to set database connection encoding.';
include 'output.html.php';
exit();
}
if (!mysqli_select_db($link, 'my_database'))
{
$output = 'Unable to locate the my_database database.'
include 'output.html.php';
exit();
}
$output = 'Database connection established.';
include 'output.html.php';
Second file:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<title>Connect Test</title>
</head>
<body>
<h1>Output</h1>
<p>
<?php echo $output ?>
</p>
</body>
</html>
Online it looks as though you have error_reporting(0); and ini_set(‘display_errors’,FALSE); so you do not notice the syntax errors
Try this:
error_reporting(-1);ini_set('display_errors',true);
...
...
$output = 'Unable to locate the my_database database.'
Parse error: syntax error, unexpected 'include' (T_INCLUDE) in /opt/lampp/htdocs/index.php on line 23
Hi John. I am only a beginner. I do not know what to do with the code you quoted. I have copied it into my file. I am just trying to follow the book’s standard example of connecting to a MySQL database, which I have never done before. All I want to do is connect to the MySQL database I have installed with PHP.
Ok, no problem about being being a beginner, we have all been there and struggled.
Please take special note of the error message which shows because the error_reporting(-1); is set to maximum and because of ini_set(‘display_errors’, true); the errors will be displayed on the screen and not in your error reporting file.
Parse error: syntax error, unexpected ‘include’ FONT=monospace [/FONT]in /opt/lampp/htdocs/index.php on line 23
// missing semi-colon at end of next line:
$output = 'Unable to locate the my_database database.'
