20 Aug Set custom sizes (beyond the $size argument) to WordPress Feature Image/thumbnail
get_the_post_thumbnail() is a very useful WordPress function, but I tried to cheat and set up an image of a X size to then resize it to half the size so that it would look good on Retina displays.
Shame get_the-post_thumbnail() returns the full <img> tag rather than just a URI, so I tried to pass some arguments, like class but also width and height, likeso
$args = array( 'class' => "desktopOnly", 'width => '240', 'height' => '444', alt' => trim( strip_tags( $concert["post_title"] ) )); $photo = get_the_post_thumbnail($concert["ID"], "concert-listing", $args ) ;
Shame that my height and width attributes were ignored, so I thought I could do with some preg_match action!
if(has_post_thumbnail( $concert["ID"] )): $args = array( 'class' => "desktopOnly", 'alt' => trim( strip_tags( $concert["post_title"] ) )); $photo = get_the_post_thumbnail($concert["ID"], "concert-listing", $args ) ; $replace = array('width' => '240', 'height'=> '444'); foreach($replace as $item => $size): //resize img with regex :S $matches = array(); $pattern = '/('.$item.'=")((\d+))"/'; preg_match ($pattern, $photo, $matches); if(!empty($matches)): //now replace it $photo = str_replace($item.'="'.$matches.'"', $item.'="'.$size.'"', $photo); endif; endforeach; echo $photo; endif;