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Previous Next Function Driving me Mad

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  #1  
Old August 25th, 2006, 05:56 AM
john128 john128 is offline
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Previous Next Function Driving me Mad
Hi,

I have been trying to add the previous next function with page numbers a la google to the folowing code but I just cannot to it. Please could someone help me.

PHP Code:
include("/data.inc");
 
  $connection = mysql_connect($host,$user,$password)
       or die ("couldn't connect to server");
  $db = mysql_select_db($database,$connection)
       or die ("Couldn't select database");
     


 $query = "SELECT * FROM propertydetailstable ";
 if ($_POST['type'] == 'no_pref' AND $_POST['interest'] == 'no_pref') {
    $query .= "WHERE Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";       }
    elseif  ($_POST['type'] == 'no_pref') { 
 $query .= "WHERE Location_Look_up=\"{$_POST['interest']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";   
    }
    elseif ($_POST['interest'] == 'no_pref') { */
    $query .= "WHERE Dwelling=\"{$_POST['type']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";   
  }
    else {
            $query .= "WHERE Location_Look_up=\"{$_POST['interest']}\" AND Dwelling=\"{$_POST['type']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal"; 
            }
  $result = mysql_query($query)
       or die ("Couldn't execute query.");

  while ($row = mysql_fetch_array($result,MYSQL_ASSOC))   
  { 

echo '<br><br><A title="View details" ';
echo 'href="/propertydetails.php?ref=';
echo "{$row['Ref_No']}";
echo '">View ';
echo 'details</A> <br><br></div>';
echo '<div class="clear2"></div>';
 }


?> 


Thanks John
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  #2  
Old August 28th, 2006, 09:55 AM
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MadCowDzz MadCowDzz is offline
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What does this code produce?
An error? An incorrect URL?

What does the rendered HTML look like?
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  #3  
Old August 28th, 2006, 01:15 PM
john128 john128 is offline
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The code in the PHP brakets is the code I used and like it is it works fine, but I need it to display the search results useing the criteria from the search form.

I tried adding the code below which searches the database for the results using an if statement but i just do not know how to add it to the code below.

Do i need to create a temporary table with the search results?


if ($_POST['type'] == 'no_pref' AND $_POST['interest'] == 'no_pref') {
$sql .= "WHERE Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal"; }
elseif ($_POST['type'] == 'no_pref') {
$sql .= "WHERE Location_Look_up=\"{$_POST['interest']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";
}
elseif ($_POST['interest'] == 'no_pref') {
/*$query .= "WHERE Dwelling=\"".$_POST['type']."\" AND Beds >= \"".$_POST[minbeds]."\" AND Eurocal >= \"".$_POST['minprice']."\" AND Eurocal <= \"".$_POST['maxprice']."\"";
} */
$sql .= "WHERE Dwelling=\"{$_POST['type']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";
}
else {
$sql .= "WHERE Location_Look_up=\"{$_POST['interest']}\" AND Dwelling=\"{$_POST['type']}\" AND Beds >= \"{$_POST[minbeds]}\" AND Eurocal >= \"{$_POST['minprice']}\" AND Eurocal <= \"{$_POST['maxprice']}\" ORDER BY Eurocal";
}





PHP Code:
<?php
  include("access.inc");
   $connection = mysql_connect($host,$user,$password)
       or die ("couldn't connect to server");
  $db = mysql_select_db($database,$connection)
       or die ("Couldn't select database");
         



class MySQLPagedResults {

   var $total_results_sql;
   var $current_page;
   var $results_per_page;
   var $links_per_page;
   var $previous_link_text;
   var $next_link_text;

   function MySQLPagedResults($total_results_sql,$page_name,$u  rl_string,$results_per_page,$links_per_page,$first  _link_text,$previous_link_text,$next_link_text,$la  st_link_text,$seperator) {
      $this->total_results_sql = $total_results_sql;
      if(!isset($_GET[$page_name])) {
         $this->current_page = 1;
      } else {
         $this->current_page = $_GET[$page_name];
      }
      $this->results_per_page = $results_per_page;
      $this->links_per_page = $links_per_page;
      $this->previous_link_text = $previous_link_text;
      $this->next_link_text = $next_link_text;
      $this->first_link_text = $first_link_text;
      $this->last_link_text = $last_link_text;
      $this->page_name = $page_name;
      $this->url_string = $url_string;
      $this->seperator = $seperator;
   }

   function totalResults() {
      $query = mysql_query($this->total_results_sql);
      $result = mysql_fetch_array($query);
      return $result[0];
   }

   function totalPages() {
      return ceil($this->totalResults()/$this->results_per_page);
   }

   function currentOffset() {
      return ($this->current_page-1)*$this->results_per_page;
   }

   function isFirstPage() {
      return ($this->current_page <= 1);
   }

   function isLastPage() {
      return ($this->current_page >= $this->totalPages());
   }

   function getPrevNav() {
      $nav='';
      //Deal with previous link
      if(!$this->isFirstPage()) {
         $nav.='<a href="?'.$this->page_name.'='.($this->current_page-1).''.$this->url_string.'">'.$this->previous_link_text.'</a>';
      } else {
         $nav.=$this->previous_link_text;
      }
      return $nav;
   }

   function getNextNav() {
      //Deal with next link
      if(!$this->isLastPage()) {
         $nav.='<a href="?'.$this->page_name.'='.($this->current_page+1).''.$this->url_string.'">'.$this->next_link_text.'</a>';
      } else {
         $nav.=$this->next_link_text;
      }
      return $nav;
   }

   function getFirstNav() {
      $nav='';
      //Deal with previous link
      if(!$this->isFirstPage()) {
         $nav.='<a href="?'.$this->page_name.'=1'.$this->url_string.'">'.$this->first_link_text.'</a>';
      } else {
         $nav.=$this->first_link_text;
      }
      return $nav;
   }

   function getLastNav() {
      $nav='';
      //Deal with previous link
      if(!$this->isLastPage()) {
         $nav.='<a href="?'.$this->page_name.'='.$this->totalPages().''.$this->url_string.'">'.$this->last_link_text.'</a>';
      } else {
         $nav.=$this->last_link_text;
      }
      return $nav;
   }

   function getResultNumbersStart() {
      return ($this->current_page*$this->results_per_page)-$this->results_per_page+1;
   }

   function getResultNumbersEnd() {
      return $this->getResultNumbersStart()+$this->results_per_page-1;
   }

   function getStartNumber() {
      $links_per_page_half = $this->links_per_page/2;
      if($this->current_page<=$links_per_page_half) {
         return 1;
      } elseif($this->current_page>=$this->totalPages()-$links_per_page_half) {
         return $this->totalPages()-$this->links_per_page+1;
      } else {
         return $this->current_page-$links_per_page_half;
      }
   }

   function getEndNumber() {
      if($this->totalPages() < $this->links_per_page) {
         return $this->totalPages();
      } else {
         return $this->links_per_page;
      }
   }

   function getPagesNav() {
      $nav='';
      for($i=$this->getStartNumber(); $i<$this->getStartNumber()+$this->getEndNumber(); $i++) {
         if($i!=$this->current_page) {
            $nav.="<a href='?".$this->page_name."=$i".$this->url_string."'>$i</a>";
         } else {
            $nav.="$i";
         }
         if($i!=$this->getStartNumber()+$this->getEndNumber()-1) { $nav.=$this->seperator; }
      }
      return $nav;
   }

}







$paging_results = new MySQLPagedResults("SELECT count(*) FROM propertydetailstable","page","",25,10,"<<","Previous","Next",">>"," | ");



//Make the variables from the class easier to read/use
$first_nav = $paging_results->getFirstNav();
$prev_nav = $paging_results->getPrevNav();
$next_nav = $paging_results->getNextNav();
$last_nav = $paging_results->getLastNav();
$pages_nav = $paging_results->getPagesNav();
$offset = $paging_results->currentOffset();
$results_per_page = $paging_results->results_per_page;
$current_page = $paging_results->current_page;
$total_pages = $paging_results->totalPages();
$start_number = $paging_results->getResultNumbersStart();
$end_number = $paging_results->getResultNumbersEnd();

//Loop through a table of our database using the $offset and $results_per_page variables from our class.
$sql = "SELECT * FROM propertydetailstable LIMIT $offset,$results_per_page";

$query = mysql_query($sql);
while($row = mysql_fetch_array($query)) {
 #  echo $data[0] . ", ";
   echo '<div class="summary">';
echo '<div class="resultsTitle"><span class="propertyResultsListingHeader">';
echo "{$row['Ref No']}";
echo ' in ';
echo "{$row['Location_Look_up']}";
}

echo "<p><b>Page:</b> $current_page of $total_pages &nbsp;|&nbsp; <b>Results:</b> $start_number - $end_number<br>";
echo "$first_nav $prev_nav $pages_nav $next_nav $last_nav</p>";


?>
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