random image

[kitcorsa]

im looking to make a display with 3 images in it which are random image which change when refreshed.

how would i go about this??

[kitcorsa]

think this should work??

if i include this code in the section of the site i want the random images

<?php
print '<div id="showcase">';

print '<a href="link to a gallery page"><img src="images/showcase/';
$src1 = get_image();
print $src1;
print '" alt="Picture" /></a>';

print '<a href="link to a gallery page"><img src="images/showcase/';
$src2 = get_image();
while ($src2 == $src1) {$src2 = get_image();}
print $src2;
print '" alt="Picture" /></a>';

print '<a href="link to a gallery page"><img src="images/showcase/';
$src3 = get_image();
while (($src3 == $src1) OR ($src3 == $src2)) {$src3 = get_image();}
print $src3;
print '" alt="Picture" /></a>';

print'	<h3 class="showcase"><span>Gallery</span></h3>
		</div>
		<!-- end "showcase" -->';
?>

[kitcorsa]

not working hun i get this error

<img src="images/showcase/
Fatal error: Call to undefined function get_image() in D:\websites\includes\colum.php on line 8

which is line $src1 = get_image();

[Bunkermaster]

you need to make a script that will output the image (with the right headers) and call it as image file. in that script you can list all image files and get a random one in the existing pool or even pull an image from a database.

[kitcorsa]

this is a site without a database.

[kitcorsa]

i have done this now

[nhassan]

hmm, even if im a little late, how about this ?

<?php
$dir = 'images';
$dh  = opendir(dirname(__FILE__) . '/' . $dir);
while (false !== ($filename = readdir($dh))) {
    if( substr($filename, -4) == '.jpg' ) {
		$img[] = $filename;
	}
}

for( $x = 0; $x<3; $x++ ) {
	echo '<img src="' . $dir . '' . $img[rand(0,count($img))] . '" />';
}
?>

[ShawnK]

Why not make it 7000000000 times simpler?

$imgs = array("img1.jpg", "img2.gif", "img3.bmp");
$rand_img = array_rand($imgs, 1);
echp "<img src=\"". $rand_img ."\"></img>";

[nhassan]

well, mine is easier to add, just upload the files =D

[Pezmc]

@: I aggree with you verry neat and time saving script

[Weedpacket]

Okay, maybe only 5000000000 times simpler, then:

chdir('images');
$imgs = glob('*.jpg');
$rand_img = array_rand($imgs);
echo "<img src=\"". $imgs[$rand_img] ."\"></img>"; 

[laserlight]

mine is easier to add, just upload the files

It has a bug: rand(0,count($img)) can generate an index that is outside of the bounds of $img.
Oh, and the same image can be chosen multiple times, which may not be desirable.

[nhassan]

hmm, well to get rid of the fact that multiple images could come up, then the script gets a little longer

<?php
$dir = 'images';
$dh  = opendir(dirname(__FILE__) . '/' . $dir);
while (false !== ($filename = readdir($dh))) {
    if( substr($filename, -4) == '.jpg' ) {
        $img[] = $filename;
    }
}

for( $x = 0; $x<3; $x++ ) {
    $var = rand(0,count($img));
    echo '<img src="' . $dir . '' . $img[$var)] . '" />';
    unset($img[$var]);
}
?> 

[Bunkermaster]

I prefer to randomize the image at the image file level. This allows me to add images in the script without actually copy pasting code or even function calls. Easier code maintenance.

[Weedpacket]

nhassan wrote:

hmm, well to get rid of the fact that multiple images could come up, then the script gets a little longer

"A little longer"? You doubled its length when it was already longer than it needed to be. You've also still got the same bug.

chdir('images');
$imgs = glob('*.jpg');
$rand_imgs = array_rand($imgs, 3);
foreach($rand_imgs as $rand_img)
    echo "<img src=\"". $imgs[$rand_img] ."\"></img>"; 

[nhassan]

erm, ok.

im not a novice at php like you, and your probably double my age as well.

[intodesi]

anyway to use this to randomize images without refresh/reloading the page? without even using a meta refresh?

chdir('images');
$imgs = glob('*.jpg');
$rand_imgs = array_rand($imgs, 3);
foreach($rand_imgs as $rand_img)
    echo "<img src=\"". $imgs[$rand_img] ."\"></img>"; 

[bpat1434]

Answered in your other thread... Javascript would be used to get the new image name, and you'd have to use javascript to change the value of the src attribute of the <img> tag.

[Horizon88]

Excellent bit about this at a friend's site: http://robm.me.uk/articles/image-rotation-in-php