WP Version 5.4.2 There is an image size definition of medium_large with size_w = 768 and size_h = 0 - You can find it near line 530 of wp-admin/includes/schema.php:

// 4.4.0
'medium_large_size_w'             => 768,
'medium_large_size_h'             => 0,

I'm wondering what sense this definition makes?

WP Version 5.4.2 There is an image size definition of medium_large with size_w = 768 and size_h = 0 - You can find it near line 530 of wp-admin/includes/schema.php:

// 4.4.0
'medium_large_size_w'             => 768,
'medium_large_size_h'             => 0,

I'm wondering what sense this definition makes?

• images
• post-thumbnails

Share Improve this question asked Jul 7, 2020 at 17:05 TomTom 1311 silver badge55 bronze badges

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1 Answer 1

Sorted by: Reset to default 1

It appears that it's eventually used as a parameter to wp_constrain_dimensions where '0' means 'no limit'.

It's only used directly in media.php:85

  } elseif ( 'medium_large' === $size ) {
    $max_width  = intval( get_option( 'medium_large_size_w' ) );
    $max_height = intval( get_option( 'medium_large_size_h' ) );

    if ( intval( $content_width ) > 0 ) {
      $max_width = min( intval( $content_width ), $max_width );
    }

$max_height then used at :135

return wp_constrain_dimensions( $width, $height, $max_width, $max_height );

Docs here show 0 means no limit