Need Help with Directory List w/Paging

[DaemonProjects]

Hello I have two questions,

1.) I'm trying to list 1 image at a time that is found in a directory called "modelimages/" but the code below lists every jpg in the directory. How can I limit the code to only show 1 image?

<?php
      //define the path as relative
      $path = "modelimages/";

  //using the opendir function
  $dir_handle = @opendir($path) or die("Unable to open $path");

  while ($file = readdir($dir_handle)){
		// if not a subdirectory and if filename contains the string '.jpg' 
  		if(!is_dir($file) && strpos($file, '.jpg')>0) {
  			//encode spaces
  			$file = rawurlencode($file);
  			// convert the + (this is one result from the function rawurlencode) in %20
			$url = str_replace('+' , '%20' , $file);
 					echo "<a href='".$path.$url."'><img src='".$path.$url."' width='200' hieght='200' border='0'></a><br/><br>";
		}
 	}

  //closing the directory
  closedir($dir_handle);
?>

2.) How can I setup a paging system ([Prev] 1 2 3 4 [Next]) with the above code? Using $PHP_SELF;. Code below outputs "1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 " each with a hyper link of "http://localhost/list.php?offset=0"

<?
//using the opendir function
$dir_handle2 = @opendir($path) or die("Unable to open $path");

while ($file2 = readdir($dir_handle2)){
$count = count($file2);
	// next we need to do the links to other results
	if ($offset>0) { // bypass PREV link if offset is 0
		$prevoffset=$offset-$limit;
   		print "<a href=\"$PHP_SELF?offset=$prevoffset\">PREV</a> &nbsp; \n";
	}


//echo $count;
// calculate number of pages needing links
$pages=intval($count/$limit);

// $pages now contains int of pages needed unless there is a remainder from division
if ($count%$limit) {
    // has remainder so add one page
    $pages++;
}

for ($i=1;$i<=$pages;$i++) { // loop thru
   $newoffset=$limit*($i-1);
   print "<a href=\"$PHP_SELF?offset=$newoffset\">$i</a> &nbsp; \n";
}

// check to see if last page
if (!(($offset/$limit)==$pages) && $pages!=1) {
   if ($offset/$limit == 0) {
		// not last page so give NEXT link
		$newoffset=$offset+$limit;
		print "<a href=\"$PHP_SELF?offset=$newoffset\">NEXT</a><p>\n";
	} else {
		//Do nothing
	}
}
}
 //closing the directory
      closedir($dir_handle2);
?>

thanks,
D

[rkolbe]

Here is a lovely paging system I found on the forums the other night...I wish I knew the person who wrote it up or where the thread was...I want to give credit to them. I rewrote parts of it and plan to refactor some things in the future...so far I love this php class....works like a charm.

/*************************************************************
*
* Class:........PagedResults
* Version:......???
* Created:......??? 
* Author:.......PHPBuilder.com Forum Member
* Author 2:.....Raymond Kolbe
*
* Description: Provides generic functionality for creating
*	paged results (e.g. << Prev 1 2 3 Next >>). Database 
*	friendly (e.g. MySQL).
*
* Usage:
*
*	Example:
*		$paged = new PagedResults('10');
*		$paged->setTotalResults('500');
*		print_p($paged->InfoArray());
*
*	Note: 
*
*	Required: Nothing
*
* Change Log:
*	April 29, 2007:
*		- Added constructor to pass arguments
*		- Changed all data members to private
*		- Added setTotalResults($tal) method
*		- Added visability to methods
*
*************************************************************/

class PagedResults {
	private $TotalResults = 0;
	private $CurrentPage = 1;
	private $PageVarName;
	private $ResultsPerPage;
	private $LinksPerPage;

public function __construct($rx = "20", $lx = "10", $pgname = "page"){
	$this->ResultsPerPage = $rx;
	$this->LinksPerPage = $lx;
	$this->PageVarName = $pgname;
}

public function setTotalResults($tal){
	$this->TotalResults = $tal;
}

public function InfoArray() {
	$this->TotalPages 	= $this->getTotalPages();
	$this->CurrentPage 	= $this->getCurrentPage();
	$this->ResultArray 	= array(
		"PREV_PAGE" 		=> $this->getPrevPage(),
		"NEXT_PAGE" 		=> $this->getNextPage(),
		"CURRENT_PAGE" 		=> $this->CurrentPage,
		"TOTAL_PAGES" 		=> $this->TotalPages,
		"TOTAL_RESULTS" 	=> $this->TotalResults,
		"PAGE_NUMBERS" 		=> $this->getNumbers(),
		"MYSQL_LIMIT1" 		=> $this->getStartOffset(),
		"MYSQL_LIMIT2" 		=> $this->ResultsPerPage,
		"START_OFFSET" 		=> $this->getStartOffset(),
		"END_OFFSET" 		=> $this->getEndOffset(),
		"RESULTS_PER_PAGE" 	=> $this->ResultsPerPage,
	);
	return $this->ResultArray;
}

/* Start information functions */
private function getTotalPages() {
	/* Make sure we don't devide by zero */
	if($this->TotalResults != 0 && $this->ResultsPerPage != 0) {
		$result = ceil($this->TotalResults / $this->ResultsPerPage);
	}
	/* If 0, make it 1 page */
	if(isset($result) && $result == 0) {
		return 1;
	} else {
		return $result;
	}
}

private function getStartOffset() {
	$offset = $this->ResultsPerPage * ($this->CurrentPage - 1);
	if($offset != 0) { 
		$offset++; 
	}
	return $offset;
}

private function getEndOffset() {
	if($this->getStartOffset() > ($this->TotalResults - $this->ResultsPerPage)) {
		$offset = $this->TotalResults;
	} elseif($this->getStartOffset() != 0) {
		$offset = $this->getStartOffset() + $this->ResultsPerPage - 1;
	} else {
		$offset = $this->ResultsPerPage;
	}
	return $offset;
}

private function getCurrentPage() {
	if(isset($_GET[$this->PageVarName])) {
		return $_GET[$this->PageVarName];
	} else {
		return $this->CurrentPage;
	}
}

private function getPrevPage() {
	if($this->CurrentPage > 1) {
		return $this->CurrentPage - 1;
	} else {
		return false;
	}
}

private function getNextPage() {
	if($this->CurrentPage < $this->TotalPages) {
		return $this->CurrentPage + 1;
	} else {
			return false;
	}
}

private function getStartNumber() {
	$links_per_page_half = $this->LinksPerPage / 2;
	/* See if curpage is less than half links per page */
	if($this->CurrentPage <= $links_per_page_half || $this->TotalPages <= $this->LinksPerPage) {
		return 1;
		/* See if curpage is greater than TotalPages minus Half links per page */
	} elseif($this->CurrentPage >= ($this->TotalPages - $links_per_page_half)) {
		return $this->TotalPages - $this->LinksPerPage + 1;
	} else {
		return $this->CurrentPage - $links_per_page_half;
	}
}

private function getEndNumber() {
	if($this->TotalPages < $this->LinksPerPage) {
		return $this->TotalPages;
	} else {
		return $this->getStartNumber() + $this->LinksPerPage - 1;
	}
}

private function getNumbers() {
	for($i=$this->getStartNumber(); $i<=$this->getEndNumber(); $i++) {
		$numbers[] = $i;
	}
	return $numbers;
}
}

[DaemonProjects]

hey thanks for the code but how exactly do I use it?

Im trying this

<?
//Load Class
 include "dir.php";

// Count Contents in directory
 $countdir = count(glob("modelimages/*.*"));

 $paged = new PagedResults('10');
 $paged->setTotalResults($countdir);
 print_p ($paged->InfoArray());
?>

I get an error: Fatal error: Call to undefined function print_p() in C:\wamp\www\traciross\list.php on line 7

Now if I use print instead of print_p I get an output of: Array

ok ok I just tried print_r and got: Array ( [PREV_PAGE] => [NEXT_PAGE] => 2 [CURRENT_PAGE] => 1 [TOTAL_PAGES] => 2 [TOTAL_RESULTS] => 14 [PAGE_NUMBERS] => Array ( [0] => 1 [1] => 2 ) [MYSQL_LIMIT1] => 0 [MYSQL_LIMIT2] => 10 [START_OFFSET] => 0 [END_OFFSET] => 10 [RESULTS_PER_PAGE] => 10 )

[rkolbe]

Well....I use it like this with MySQL:

/**
*	Establish our connection. I have a class called DBConn
*       and I really like using the singleton pattern with DB
*       connections. Just create your connection to your DB.
*/
$conn = DBConn::getInstance()->getConn();

/**
*	Here we find out how many records are in our table.
*       This is needed so we can calculate how many pages
*       to make. Again, I am using my DBConn class (uses PDO)
*/
$sth = $conn->prepare("SELECT * FROM myTable");
// Execute needed by PDO to carry our our SQL statement
$sth->execute();
// Set $cnt to the number of records we have
$cnt = count($sth->fetchAll());

/**
*	Setup our nice pagination
*/
$paged = new PagedResults('10');
// Set our total number of records to the obj
$paged->setTotalResults($cnt);

// Pass InfoArray() to $InfoArray instead of printing it out
$InfoArray = $paged->InfoArray();

/**
*	Let's grab our records instead of just counting them
*/
$sth = $conn->prepare("SELECT * FROM person WHERE gender = 'Female' LIMIT ".$InfoArray["MYSQL_LIMIT1"].", ".$InfoArray["MYSQL_LIMIT2"]); 
// Execute our query
$sth->execute();

$results = $sth->fetchAll();

echo "<H1>Here are some females in our database:</H1>";

foreach($results as $row){

echo $row['Name'] . "<br>";
echo $row['Age'] . "<br>";
}

/**
*
* Nice pagination. This is the << Prev 1 2 3 4 Next >>
*
*/
echo "<div align=\"center\">";
   /* Print our first link */
   if($InfoArray["CURRENT_PAGE"]!= 1) {
      echo "<a href='?page=1'>&lt;&lt;</a> ";
   } else {
      echo "&lt;&lt; ";
   }

   /* Print out our prev link */
   if($InfoArray["PREV_PAGE"]) {
      echo "<a href='?page=" . $InfoArray["PREV_PAGE"] ."'>Previous</a> | ";
   } else {
      echo "Previous | ";
   }

//* Example of how to print our number links! */
   for($i=0; $i<count($InfoArray["PAGE_NUMBERS"]); $i++) {
      if($InfoArray["CURRENT_PAGE"] == $InfoArray["PAGE_NUMBERS"][$i]) {
         echo $InfoArray["PAGE_NUMBERS"][$i] . " | ";
      } else {
         echo "<a href='?page=" . $InfoArray["PAGE_NUMBERS"][$i] . "'>" . $InfoArray["PAGE_NUMBERS"][$i] . "</a> | ";
      }
   }

   /* Print out our next link */
   if($InfoArray["NEXT_PAGE"]) {
      echo " <a href='?page=" . $InfoArray["NEXT_PAGE"] ."'>Next</a>";
   } else {
      echo " Next";
   }

   /* Print our last link */
   if($InfoArray["CURRENT_PAGE"]!= $InfoArray["TOTAL_PAGES"]) {
      echo " <a href='?page=" . $InfoArray["TOTAL_PAGES"] ."'>>></a>";
   } else {
      echo " &gt;&gt;";
   }

So...that should work...😃