bookdisplayfunctions.php

来自「php源码 php源码参考」· PHP 代码 · 共 287 行

<?php
require_once('AmazonResultSet.php');
require_once('cachefunctions.php');

// Display the large cover image for a book 
// (or probably the equivalent image for other products)
function showImage($ASIN, $mode)
{
  $ars = getARS('asin', array('asin'=>$ASIN, 'mode'=>$mode));
  $url = $ars->getImageURLLarge($ASIN, $mode);
  $imageFile = getImage($url); 
  
  echo '<hr>';
  echo "<p align = 'center'><a href = 'index.php?action=detail&ASIN=$ASIN&mode=$mode'><img src='images/details.gif' alt='View Book Details' border=0></a>";
  echo "<p align = 'center'><a href = 'index.php?action=detail&ASIN=$ASIN&mode=$mode'>
  <img src='$imageFile' alt='View Book Details' border=0></a>";
  echo "<p align = 'center'><a href = 'index.php?action=detail&ASIN=$ASIN&mode=$mode'><img src='images/details.gif' alt='View Book Details' border=0></a>";
  echo '<hr>';
}

// For a particular browsenode, display a page of products
function showBrowseNode($browseNode, $page, $mode)
{
  $ars = getARS('browse', array('browsenode'=>$browseNode, 'page' => $page, 'mode'=>$mode));
  showSummary($ars->products(), $page, $ars->totalResults(), $mode, $browseNode);
}

// display the results of a keyword search
function showSearch($search, $page, $mode)
{
  $ars = getARS('search', array('search'=>$search, 'page' => $page, 'mode'=>$mode));
  $products = &$ars->products();
  if($products)
  {
    showSummary($products, $page, $ars->totalResults(), $mode, 0, false, $search);
  }
  else
  {
    echo "No products matched your search term";
  }
  
}

// show a pageful of summary information about products
// this function is used to show browsenodes, the shopping cart and keyword search results
function showSummary($products, $page, $totalProducts, $mode, $browseNode=0, $cart=false, $search = '')
{
  global $_SESSION;
  
  if(count($products)==0)
  {
    echo '<p>No products to display';
  }
  else
  {
    echo '<table border = 0  width = "100%" cellpadding = 2 cellspacing = 0>';

    foreach ($products as $product)
    {
      if(!$product || !$product->valid())
        continue;  // there is some odd stuff in the catalogue.  Skip products that are missing vital data.
      $ASIN = $product->ASIN();      
         
      echo '<tr><td colspan = 2><hr></td></tr>';
      $imageFile =getImage($product->imageURLMedium());
     
      echo "<tr><td align = center><a href='index.php?action=detail&ASIN=$ASIN'>
                      <img src= '$imageFile' alt = 'View book details' border = 0>
                      </a></td><td>";
      
      echo '<h3>'.$product->productName().'</h3>';
      echo displayAuthors($product->authors()).'<br>';
      if($product->releaseDate())
        echo $product->releaseDate().'<br>';
      echo '<span class="bookprice">$'.$product->ourPrice().'</span>';
      if($product->ourPrice()!=$product->listPrice())
      {
        echo ' (list price <span class=listprice>$'.$product->listPrice().'</span>)';
      }
      echo '<br>';
      if($cart) // display quantity and total price if showing shopping cart
      {
        $quantity = $_SESSION['cart'][$ASIN]['quantity'];
        $price = $product->ourPrice();
        $total = number_format($quantity * $price, 2);
        echo "Quantity in Cart: $quantity<br>";
        echo "Total Price: <span class='bookprice'>\$$total</span><br>";  
      }
      
      echo "ISBN: $ASIN<br>";
      if($product->avgCustomerRating())
        echo 'Customer Rating: '.displayStars($product->avgCustomerRating()).'<br>';

      if($cart)
        echo "<a href = 'index.php?action=deletefromcart&ASIN=$ASIN'><img src = 'images/delete.gif' alt = 'Remove Item From Cart' border = 0></a>";
      else
        echo "<a href = 'index.php?action=addtocart&ASIN=$ASIN'><img src = 'images/addtocart.gif' alt = 'Add to Cart' border = 0></a>";
            
      
      echo ' <a href="index.php?action=detail&ASIN='.$ASIN.'"><img src = "images/details.gif" alt = "View Details" border = 0></a>';
      echo "</td></tr>";    
    }

    echo '</table>';
    
    if($totalProducts>10&&!$cart) 
    // we could break cart contents into pages, but choose not to
    {
      echo 'Go To Page: ';
      
      $pages = ceil($totalProducts/10);
      if($pages>30) $pages=30;
      for($i = 1; $i<=$pages; $i++)
      {
        if($page == $i)
        {
          echo "<b>$i</b> ";
        }
        else
        {
          if($browseNode)
            echo "<a href = 'index.php?action=browsenode&browseNode=$browseNode&page=$i'>$i</a> ";
          if($search)
            echo "<a href = 'index.php?action=search&search=$search&page=$i'>$i</a> ";
        }
      }
    }
  }
}

// display a detailed product page
// currently set up for books (uses words like publisher).
// Will need some modification for use with other product categories
function showDetail($ASIN, $mode)
{
  $ars = getARS('asin', array('asin'=>$ASIN, 'mode'=>$mode));
  if($ars)
    $product = $ars->getProduct(0);
  else
    echo "cannot get details for $ASIN";
  if(!$product)
  {
    echo 'No product to display';
    return;
  }

  echo '<table border = 0  width = "100%" cellpadding = 4 cellspacing = 4>';

  $imageFile = getImage($product->imageURLMedium());
   
  echo "<tr><td valign = 'top' align = 'center'><a href='index.php?action=image&ASIN=$ASIN&mode=$mode'><img src= '$imageFile' alt = 'View book details' border = 0></a><br><br>";
  echo "<a href = 'index.php?action=addtocart&ASIN=$ASIN'><img src = 'images/addtocart.gif' alt = 'Add to Cart' border = 0></a>";
  echo '</td><td>';
  
  echo '<h1>'.$product->productName().'</h1>';
  echo displayAuthors($product->authors(), false).'<br>';
  if($product->releaseDate())
    echo 'Published: '.$product->releaseDate().'<br>';
  if($product->manufacturer())
    echo 'Publisher: '.$product->manufacturer().'<br>';
  
  echo 'Our Price: <span class="bookprice">$'.$product->ourPrice().'</span><br>';
  if($product->ourPrice()!=$product->listPrice())
  {
    echo 'List price: $'.$product->listPrice();
  }
  $saving = $product->listPrice()  - $product->ourPrice();
  if($saving>0.50)
  {
    $saving = number_format($saving, 2);
    echo " <span class='bookprice'>SAVE \$$saving</span>";
  }
  echo '<br>';
  echo 'ISBN: '.$ASIN.'<br>';
  if($product->avgCustomerRating())
    echo 'Customer Rating: '.displayStars($product->avgCustomerRating()).'<br>';
  if($product->salesRank())
    echo 'Sales Rank: '.$product->salesRank().'<br>';
  if($product->availability())
    echo 'Availability: '.$product->availability().'<br>';
  
  echo '</p>';
  
  // remember that this section will be making up tp 5 extra calls to Amazon
  // remove it if it is too slow
  $similar = $product->similarProductCount();
  if($similar)
  {
    echo '<hr>';
    echo '<h2>Similar Products</h2><ul>';    
    for($i = 0; $i<$similar; $i++)
    {
      echo '<li>'.similarSummary($product->similarProduct($i), $mode);
    }
    echo '</ul>';
  }
  
  $reviews = $product->customerReviewCount();
    
  if($reviews)
  {
    echo '<hr>';
    echo '<h2>Customer Reviews</h2>';    
    for($i = 0; $i<$reviews; $i++)
    {
      echo '<h3>'. displayStars($product->customerReviewRating($i));
      echo ' '.$product->customerReviewSummary($i).'</h3>';
      echo '<p>'.$product->customerReviewComment($i).'</p>';
    }
  }
  echo "</td></tr>";    

  echo '<tr><td colspan = 2><hr></td></tr>';
  echo '</table>';
}

// From an ASIN, get the name and author
// Used for the similar products list on the detail page
function similarSummary($ASIN, $mode)
{
  $ars = getARS('asin', array('asin'=>$ASIN, 'mode'=>$mode));
  if($ars)
    $product = $ars->getProduct(0);
  else
    echo "cannot get details for $ASIN";
      
  if(!isset($product))
    return '';
  $result = "<a href='index.php?action=detail&ASIN=$ASIN'>".$product->productName().'</a> ';
  $result .= displayAuthors($product->authors());
  return $result;
}


// Display the author array in a readable way
// $short indicates list should be abbreviated for the summary page
function displayAuthors($authors, $short=true)
{
  $count = count($authors);
  if($count==0)
    return '';
  $result = "by $authors[0]";
  if($count == 1)
    return $result;
  if($short)
    $max = 5;
  else
    $max = 50;
  
  for($i=1; $i<$count-1&&$i<$max; $i++)
  {
    $result .= ', '.$authors[$i];  
  }
  if($count>=$max || $authors[$count-1] == 'et al')
    $result .= ' et al.';
  else 
    $result .= ' and '.$authors[$count-1];
  return $result;
}

// from floating point number choose how many star gifs to show
function displayStars($rating)
{
  $result = '';  

  
  $count = $rating*2;
  $count = round($count);
  $count = $count/2;
  
  $rating = number_format($rating, 1);
  
  while($count>0)
  {
    if($count>=1)
    {
      $result .= "<img src='images/star.gif' alt = '$rating Stars'>";
    }
    else if($count>0.4)
    {
      $result .= "<img src='images/halfstar.gif' alt  = '$rating Stars'>";
    }
    $count--;
  }
  return $result;
}
?>