Chapter 4:Displaying the reviews p.126-128

drgnhiker · #1 (**permalink**) February 5th, 2010, 05:10 PM

I have done this a couple of times and am just not seeing the error.....before I did all the additions the script worked perfectly and I got the success statement after creating the review table.....can anyone offer any assistance? Thanks in advance.
These are the 2 errors I get

Notice: Undefined index: movie_id in C:\wamp\www\htdocs\movie_details_new.php on line 101

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 7

Here is all the code:

Code:

<?php

//function to generate ratings
function generate_ratings($rating) {
     $movie_rating = ' ';
     for ($i = 0; $i < $rating; $i++) {
         $movie_rating .= '<img src="star.png" alt="star"/>';
     }
     return $movie_rating;
 }


//take in director id and return full name
function get_director($director_id) {

    global $db;

    $query = 'SELECT
           people_fullname
        FROM
           people
        WHERE
           people_id = ' . $director_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));

    $row = mysql_fetch_assoc($result);
     extract($row);

    return $people_fullname;
}

//take in the id of a lead actor and return full name
function get_leadactor($leadactor_id) {

    global $db;

    $query = 'SELECT
           people_fullname
        FROM
           people
        WHERE
           people_id = ' . $leadactor_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));

    $row = mysql_fetch_assoc($result);
     extract($row);

    return $people_fullname;
}

//take in the id of a movie type and return movie name
function get_movietype($type_id) {

    global $db;

    $query = 'SELECT
           movietype_label
        FROM
           movietype
        WHERE
           movietype_id = ' . $type_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));

    $row = mysql_fetch_assoc($result);
     extract($row);

    return $movietype_label;
}

//function to calculate profit,loss or break even 
function calculate_differences($takings, $cost) {

     $difference = $takings - $cost;

     if ($difference < 0) {
         $color = 'red';
         $difference = '$' . abs($difference) . ' million';
  }  elseif ($difference > 0) {
         $color = 'green';
         $difference = '$' . $difference . ' million';
  }  else {
         $color = 'blue';
         $difference = 'broke even';
}
 
   return '<span style="color:' . $color . ';">' . $difference . '</span>';
}

//connect to mysql
$db = mysql_connect('localhost', 'bp6am', 'bp6ampass') or
    die ('Unable to connect. Check your connection parameters.');
mysql_select_db('moviesite', $db) or die(mysql_error($db));

//retrieve information
$query = 'SELECT
       movie_name, movie_year, movie_director, movie_leadactor, 
       movie_type, movie_running_time, movie_cost, movie_takings
    FROM
       movie
    WHERE
       movie_id = ' . $_GET['movie_id'];
$result = mysql_query($query, $db) or die(mysql_error($db));

$row = mysql_fetch_assoc($result);
$movie_name         = $row['movie_name'];               
$movie_director     = get_director($row['movie_director']);             
$movie_leadactor    = get_leadactor($row['movie_leadactor']);                    
$movie_year         = $row['movie_year'];          
$movie_running_time = $row['movie_running_time'] . 'mins';            
$movie_takings      = $row['movie_takings'] . ' million';
$movie_cost         = $row['movie_cost'] . ' million';         
$movie_health       = calculate_differences($row['movie_takings'],
                          $row['movie_cost']);

//display the info
echo <<<ENDHTML
<html>
 <head>
  <title>Details and Reviews for: $movie_name</title>
 </head>
 <body>
  <div style="text-align: center;">
   <h2>$movie_name</h2>
   <h3><em>Details</em></h3>
   <table cellpadding="2" cellspacing="2"
     style="width:70%; margin-left: auto; margin-right: auto;">
     <tr>
      <td><strong>Title</strong></td>
      <td>$movie_name</td>
      <td><strong>Release Year</strong></td> 
      <td>$movie_year</td>
     </tr><tr>
      <td><strong>Movie Director</strong></td>
      <td>$movie_director</td>
      <td><strong>Cost</strong></td>  
      <td>$$movie_cost</td>
     </tr><tr>
      <td><strong>Lead Actor</strong></td>
      <td>$movie_leadactor</td>
      <td><strong>Takings</strong></td>
      <td>$$movie_takings</td>
     </tr><tr>
      <td><strong>Running Time</strong></td>
      <td>$movie_running_time</td>
      <td><strong>Health</strong></td>
      <td>$movie_health</td>
     </tr>
    </table>
ENDHTML;

//retrieve reviews for this movie
$query = 'SELECT
       review_movie_id, review_date, reviewer_name, review_comment, movie_rating
     FROM
       reviews
     WHERE
       review_movie_id = ' . $_GET['movie_id'] . '
     ORDER BY
       review_date DESC';

$result = mysql_query($query, $db) or die(mysql_error($db));

//display the reviews
echo <<<ENDHTML
    <h3><em>Reviews</em></h3>
    <table cellpadding="2" cellspacing="2"
     style="width: 90%; margin-left: auto; margin-right; auto;">
     <tr>
      <th style="width: 7em;">Date</th>
      <th style="width: 10em;">Reviewer</th>
      <th>Comments</th>
      <th style="width: 5em;">Rating</th>
     </tr>
ENDHTML;

while ($row = mysql_fetch_assoc($result)) {
    $date = $row('review_date');
    $name = $row('reviewer_name');
    $comment = $row('review_comment');
    $rating = generate_ratings($row('review_rating'));

echo <<<ENDHTML
    <tr>
     <td style="vertical-align:top; text-align: center;">$date</td>
     <td style="vertical-align:top;">$name</td>
     <td style="vertical-align:top;">$comment</td>
     <td style="vertical-align:top;">$rating</td>
    </tr>
ENDHTML;
}
echo <<<ENDHTML
    </div>
   </body>
  </html>
ENDHTML;
?>

drgnhiker · #2 (**permalink**) February 5th, 2010, 06:53 PM

I changed the file name back to movie_details and ran table 3 and got this error on the page just above the review table

Fatal error: Function name must be a string in C:\wamp\www\htdocs\movie_details.php on line 179

I'm sure it is something little and easy but I'm not finding the error. I have tried to look back thru the other tables and make sure all the spelling is correct also but haven't found anything yet. Maybe I need a good php editor to find all the little errors for me!!!! Thanks for the assistance.

BozHogan · #3 (**permalink**) February 6th, 2010, 10:53 AM

Note, I'm just a student too but:

I think the error is in your table3.php file. The message indicates that the $_GET array doesn't hold what it should, so the link isn't passing the parameters correctly.

Mine isn't exactly like the book, cause I like to tinker around with things, but check the line in the while loop in table3.php that does something like this:

Code:

<td><a href="movie_details.php?movie_id=$movie_id" 
	title="Click here to find out more about $row[movie_name]">$row[movie_name]</a>
</td>

You should be able to hover your mouse over the link to see what the actual URI your code is producing is as well.

Tip:
I frequently put the following two lines at the end of a program before I start typing it in.

Code:

  
echo "<pre>"; echo '$_POST '; echo print_r($_POST); echo "</pre>";
echo "<pre>"; echo '$_GET '; echo print_r($_GET); echo "</pre>";

It helps me monitor just what parameters the program is getting. This will be really useful in the next couple of chapters.

If you want, post the code for table3.php and I'll take a look. But your code looks fine for movie_details.php.

BozHogan · #4 (**permalink**) February 6th, 2010, 01:12 PM

Just saw a problem with your code:

Code:

    $date = $row('review_date');
    $name = $row('reviewer_name');
    $comment = $row('review_comment');
    $rating = generate_ratings($row('review_rating'));

$row is an array, so you need to access it's elements with square brackets instead of parentheses:

Code:

    $date = $row['review_date'];
    $name = $row['reviewer_name'];
    $comment = $row['review_comment'];
    $rating = generate_ratings($row['review_rating']);

drgnhiker · #5 (**permalink**) February 8th, 2010, 02:07 PM

Thanks for the advice and help.....went back and changed the () to [] and then to table 3 to check and discovered I spelled name as mane......program didn't know what to GET !!! Going to use your idea of the end statements, I think tha will help some. Thanks again

BozHogan · #6 (**permalink**) February 9th, 2010, 08:03 PM

No problem. I've halfway thru chapter 7 myself, so it's a good refresher to go back and look at some of the previous stuff. Amazing how fast you forget. Keep posting if you run into trouble, it does me good too, and maybe we can beef up the participation in this forum with the activity.

Regards,
Boz

Binayak · #7 (**permalink**) November 6th, 2010, 04:04 AM

me too have same problem nothihg worked from above posts..
in page 121-123. when I try to browse it says: Parse error: syntax error, unexpected ';' in C:\xampp\htdocs\movie_details.php on line 79..
Who has got the solution for it? PLz Help
binayak bhattarai

Code:

<?php
function get_director($direcror_id) {
    global $db;
    $query = 'SELECT
            people_fullname
      FROM
         people
      WHERE
         people_id = ' . $director_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));
    
    $row = mysql_fetch_assoc($result);
    extract($row);
    
    return $people_fullname;
}

function get_leadactor($leadactor_id) {
    global $db;
    $query = 'SELECT
            people_fullname
      FROM
         people
      WHERE
         people_id = ' . $leadactor_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));

    $row = mysql_fetch_assoc($result);
    extract($row);

    return $people_fullname;
}

function get_movietype($type_id) {
    global $db;
    
    $query = 'SELECT
           movietype_label
      FROM
         movietype
      WHERE
         movietype_id = ' . $type_id;
    $result = mysql_query($query, $db) or die(mysql_error($db));

    $row = mysql_fetch_assoc($result);
    extract($row);
    
    return $movietype_label;
}

function calculate_differences($takings, $cost) {
    $difference = $takings - $cost;
    
    if (difference < 0) {
       $color = 'red';
       $difference = '$' . abs($difference) . ' million';
    } elseif ($difference > 0) {
       $color = 'green';
       $difference = '$' . $difference . 'million';
    } else {
       $color = 'blue';
       $difference = 'broke even';
    }

    return '<span style ="color:' . $color . ';">' . $difference . '</span>';
}

$db = mysql_connect('localhost', 'root', '') or
    die ('unable to connect. Check your connection parameters.');
mysql_select_db('moviesite', $db) or die(mysql_error($db));


$query = 'SELECT
        movie_name, movie_year, movie_director, movie_leadactor,
        movie_tye, movie_running_time, movie_cost, movie_takings
    FROM
        movie
    WHERE
        movie_id = ' . $_GET('movie_id)';
$result = mysql_query($query, db or die(mysql_error($db));

$row = mysql_fetch_assoc($result);
$movie_name        = $row['movie_name'];
$movie_director    = $get_director($row['movie_director']);
$movie_leadactor   = $get_leadactor($row['movie_leadactor']);
$movie_year        = $row['movie_year'];
$movie_running_time = $row['movie_running_time'] .' mins';
$movie_takings     = $row['movie_takings'] . ' million';
$movie_cost        = $row['movie_cost'] . ' million';
$movie_health      = calculate_differences($row['movie_takings'], $row['movie_cost']);


//display the information


echo <<<ENDHTML
<html>
 <head>
  <title>Details and Reviews for: $movie_name</title>
 </head>
 <body>
  <div style="text-align: center;">
   <h2>$movie_name</h2>
   <h3><em>Details</em></h3>
   <table cellpadding="2" cellspacing="2" style="width: 70%; margin-left: auto; margin-right: auto;">
    <tr>
     <td><strong>Title</strong></strong></td>
     <td>$movie_name</td>
     <td><strong>Release Year</strong></strong></td>
     <td>$movie_year</td>
    </tr><tr>
     <td><strong>Movie Director</strong></td>
     <td>$movie_director</td>
     <td><strong>Cost</strong></td>
     <td>$movie_cost</td>
    </tr><tr>
     <td><strong>Lead Actor</strong></td>
     <td>$movie_leadactor</td>
     <td><strong>Takings</strong></td>
     <td>$movie_takings</td>
    </tr><tr>
     <td><strong>Running Time</strong></td>
     <td>movie_running_time</td>
     <td><strong>Health</strong></td>
     <td>$movie_health</td>
    </tr>
   </table></div>
 </body>
</html>
ENDHTML;

?>

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