php random image

[john0611]

Hi all,

This one has got me thinking?

Is there a way to make this array random for images with .jpg extension, instead of file names as list here?

<?php // random image by file
$images = array(
  array('file'    => '2000-09painting4',
        'caption' => ''),
  array('file'    => '2000-09painting7',
        'caption' => ''),


  );
$i = rand(0, count($images)-1);
$selectedImage = "img/random/paintings/{$images[$i]['file']}.jpg";
$caption = $images[$i]['caption'];
if (file_exists($selectedImage) && is_readable($selectedImage)) {
  $imageSize = getimagesize($selectedImage);
  }
?>

Thank you for your help and suggestions.

John.

[JShor]

You can retrieve an array of all images listed under one directory, and have them randomized.

<?php

 $imgdir = '/myDir/'; // the directory, where your images are stored
 $allowed_types = array('jpg','jpeg'); // list of filetypes you want to show
 $dimg = opendir($imgdir);
 while($imgfile = readdir($dimg)) {
 if(in_array(strtolower(substr($imgfile,-3)),$allowed_types)) {
 $a_img[] = $imgfile;
      sort($a_img);
 reset ($a_img);
 } 
}

$images = Array();

$totimg = count($a_img); // total image number
for($x=0; $x < $totimg; $x++) {
$size = getimagesize($imgdir.'/'.$a_img[$x]);

$halfwidth = ceil($size[0]/2);
$halfheight = ceil($size[1]/2);

echo 'name: '.$a_img[$x].' width: '.$size[0].' height: '.$size[1].'<br />';

$images += array('file'    => $a_img[$x],
                 'caption' => '');

}


$i = rand(0, count($images)-1);
$selectedImage = "img/random/paintings/{$images[$i]['file']}.jpg";
$caption = $images[$i]['caption'];
if (file_exists($selectedImage) && is_readable($selectedImage)) {
  $imageSize = getimagesize($selectedImage);
  }
?>

HTH

[john0611]

Thanks for that JShor.