TalkPHP - Warning:

My goal is to learn PHP. At the same time I am trying to run a sample PHP project because I have to implement something in PHP in a few days and I have never learned PHP before.
I plan to learn PHP using this forum and a textbook from scratch. Right now, I would be very thankful if I can get help solving the issue in the sample project.

The error I am getting is:
Warning: fopen(minus.sql) [function.fopen]: failed to open stream: Permission denied in /Users/Samantha/Sites/samplesite2/Installer/index.php on line 40

Warning: fread(): supplied argument is not a valid stream resource in /Users/Samantha/Sites/samplesite2/Installer/index.php on line 41

The file where the error is emanating from is below:

<?php

$sqlErrorText = '';
$sqlErrorCode = 0;
$sqlStmt = '';
$sqlFileToExecute = 'minus.sql';

?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>Application Installer</title>
<link href="style/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="main">
<div class="caption">Database Installer</div>
<div id="icon"> </div>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" name="dbdata">
<table width="100%">
<tr><td>Hostname:</td><td><input class="text" name="hostname" type="text" size="20" value="localhost" /></td></tr>
<tr><td>Username:</td><td> <input class="text" name="username" type="text" size="20" value="root" /></td></tr>
<tr><td>Password:</td><td> <input class="text" name="password" type="password" size="20" value="riley123" /></td></tr>
<tr><td>Database Name:</td><td> <input class="text" name="Database" type="text" size="20" value="mynewdatabase" /></td></tr>
<tr><td align="center" colspan="2"><br/><input class="text" type="submit" name="submitBtn" value="Install" /></td></tr>
</table>
</form>
<?php
if (isset($_POST['submitBtn'])){
$host = isset($_POST['hostname']) ? $_POST['hostname'] : '';
$user = isset($_POST['username']) ? $_POST['username'] : '';
$pass = isset($_POST['password']) ? $_POST['password'] : '';
$dbname = isset($_POST['Database']) ? $_POST['Database'] : '';

$con = mysql_connect($host,$user,$pass);
$msqlcon = mysql_select_db($dbname);
if ($con !== false){
// Load and explode the sql file
$f = fopen($sqlFileToExecute,"r+");
$sqlFile = fread($f,filesize($sqlFileToExecute));
$sqlArray = explode(';',$sqlFile);

//Process the sql file by statements
foreach ($sqlArray as $stmt) {
if (strlen($stmt)>3){
$result = mysql_query($stmt);
if (!$result){
$sqlErrorCode = mysql_errno();
$sqlErrorText = mysql_error();
$sqlStmt = $stmt;
break;
}
}
}
}

?>
<div class="caption">RESULT:</div>
<div id="icon2"> </div>
<div id="result">
<table width="100%">
<?php
if ($sqlErrorCode == 0){
echo "<tr><td>Installation was finished succesfully!</td></tr>";
} else {
echo "<tr><td>An error occured during installation!</td></tr>";
echo "<tr><td>Error code: $sqlErrorCode</td></tr>";
echo "<tr><td>Error text: $sqlErrorText</td></tr>";
echo "<tr><td>Statement:<br/> $sqlStmt</td></tr>";
}
?>
</table>
</div>
<?php
}
?>
<div id="source">Database Installer 1.0</div>
</div>
</body>