add_image_size adds size, but doesn't upload if source resolution is same as resize resolution

Question

I'm trying to add a new image size of 300x300..

This works, but if the uploaded file is for example 300x300, it doesn't upload the resized image.. You'd say that isn't a problem because the original is the resolution I need, but I get the image later on with:

wp_get_attachment_image_src( $meta['background'][0], array(300,300) );

And if this image is not there, wordpress fetches another size, which of course is not what I want..

What should I do?

Answer 1

I have added an image size

<?php add_image_size( 'test', 300, 300, true ); ?>

Uploaded an image of exactly 300 x 300px,

Then got the image

<?php wp_get_attachment_image_src( $id, array(300,300) );?>
or
<?php wp_get_attachment_image_src( $id, 'test' );?>

Works both ways. Maybe you did not define the image size correctly in functions.php