How to display a random image in this code?

[kokopelli]

Hope one of you PHP gurus can help me ...

In a WordPress theme, I want to change this code:

<?php if ( function_exists( 'get_the_image' ) ) { get_the_image(array( 'default_size' => 'thumbnail', 'image_scan' => true, 'default_image' => get_bloginfo( 'template_url' ) . '/images/default_thumbnail.png', 'width' => '100', 'image_class' => 'wp-post-image' )); } ?>

to something like

<?php if ( function_exists( 'get_the_image' ) ) { get_the_image(array( 'default_size' => 'thumbnail', 'image_scan' => true, 'default_image' => get_bloginfo( 'template_url' ) . '/images/default_thumbnail_0<?php echo rand(1,3)?>.png', 'width' => '100', 'image_class' => 'wp-post-image' )); } ?>

so a random image between 1 and 3 is displayed as thumbnail.

But my code doesn't work ... no image is displayed

Any idea how I should change it?

[kithkanan]

I think putting it inside the <?php ?> block is not right. Try to put it in a variable first then concatenate. Try something like this one:

<?php $randomImg = rand(1,3);?>

<?php if ( function_exists( 'get_the_image' ) ) { get_the_image(array( 'default_size' => 'thumbnail', 'image_scan' => true, 'default_image' => get_bloginfo( 'template_url' ) . '/images/default_thumbnail_0'. $randomImg .'.png', 'width' => '100', 'image_class' => 'wp-post-image' )); } ?>

[kokopelli]

Cool, that works (I had to put variable in the WordPress functions file).

Thanks!

[kithkanan]

np