Customizing a PHP script

[aftab_jii]

Hi,

I am trying to customize a script that shows random images..

i am obviously doing something wrong because the script does not show any images

can someone help me?

 

 

<?php
//this is the file for all the function

function getRandomImage($dir,$type='random')
{
global $errors,$seed;

  if (is_dir($dir)) {

  $fd = opendir($dir);
  $images = array();

      while (($part = @readdir($fd)) == true) {

          if ( @eregi("(gif|jpg|png|jpeg)$",$part) ) {
              $images[] = $part;
          }
      }

    // adding this in case you want to return the image array
    if ($type == 'all') return $images;

    if ($seed !== true) {
      mt_srand ((double) microtime() * 1000000);
      $seed = true;
    }

      $key = mt_rand (0,sizeof($images)-1);

    return $dir . $images[$key];

  } else {
      $errors[] = $dir.' is not a directory';
      return false;
  }
}


$query = "SELECT * FROM images WHERE is_published=1";
$result = mysql_query ($query); // Run the query

while ($row = mysql_fetch_array($result, MYSQL_BOTH)) {
$image_id = $row['image_id'];

$image_filename = "uploaded_images/" . $image_id . ".jpg";


$image = getRandomImage($image_filename);
echo 'The value of image is: ' . $image . '<br \>';

echo "<img src='$image_filename' width='519' height='353' border='0' usemap='#Map' \>";
}
?>

 

 

 

[jcbones]

You are attempting to use the function for a use it wasn't designed for.

 

This function is design to pass a directory full of images to it, and it will select a random image from that directory.  You are trying to give it an image name, but I don't know how you expect it to return a random image from that.

 

Instead try:

<?php
//this is the file for all the function

function getRandomImage($dir,$type='random')
{
global $errors,$seed;

  if (is_dir($dir)) {

  $fd = opendir($dir);
  $images = array();

      while (($part = @readdir($fd)) == true) {

          if ( @eregi("(gif|jpg|png|jpeg)$",$part) ) {
              $images[] = $part;
          }
      }

    // adding this in case you want to return the image array
    if ($type == 'all') return $images;

    if ($seed !== true) {
      mt_srand ((double) microtime() * 1000000);
      $seed = true;
    }

      $key = mt_rand (0,sizeof($images)-1);

    return $dir . $images[$key];

  } else {
      $errors[] = $dir.' is not a directory';
      return false;
  }
}




$image = getRandomImage('uploaded_images/');


echo "<img src='$image' width='519' height='353' border='0' usemap='#Map' \>";

?>

[TeddyKiller]

It also depends on what your trying to customize the script into..

[teamatomic]

When you define the function you have:

function getRandomImage($dir,$type='random')

it should be:

function getRandomImage($dir,$type)

Then when you call the function you use something like:

getRandomImage($imgdir,'random')

Next problem:

The type=random does not matter cause if it not "all" the function returns one random image.

 

 

HTH

Teamatomic

[aftab_jii]

@jcbones

so where could i find something to show images that has is_published=1

 

@teamatomic

your idea worked half ways

it showed all the images on one page instead  of as a sideshow

 

[jcbones]

Un-tested, but you can try:

<?php

$query = "SELECT * FROM images WHERE is_published!=1";
$result = mysql_query ($query); // Run the query

while ($row = mysql_fetch_array($result, MYSQL_BOTH)) {
$images_not_published[] = $row['image_id'];
}


function getRandomImage($dir,$type='random')
{
global $errors,$seed,$images_not_published;

  if (is_dir($dir)) {

  $fd = opendir($dir);
  $images = array();

      while (($part = @readdir($fd)) == true) {

          if ( @eregi("(gif|jpg|png|jpeg)$",$part) ) {
              $images[] = $part;
          }
      }
$images = array_values(array_diff($images,$images_not_published));
    // adding this in case you want to return the image array
    if ($type == 'all') return $images;

    if ($seed !== true) {
      mt_srand ((double) microtime() * 1000000);
      $seed = true;
    }

      $key = mt_rand (0,sizeof($images)-1);

    return $dir . $images[$key];

  } else {
      $errors[] = $dir.' is not a directory';
      return false;
  }
}

$image = getRandomImage('uploaded_images/');


echo "<img src='$image' width='519' height='353' border='0' usemap='#Map' \>";
?>