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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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989 | function image_size_input_fields( $post, $check = '' ) { |
990 | /** |
991 | * Filters the names and labels of the default image sizes. |
992 | * |
993 | * @since 3.3.0 |
994 | * |
995 | * @param array $size_names Array of image sizes and their names. Default values |
996 | * include 'Thumbnail', 'Medium', 'Large', 'Full Size'. |
997 | */ |
998 | $size_names = apply_filters( 'image_size_names_choose', array( |
999 | 'thumbnail' => __( 'Thumbnail' ), |
1000 | 'medium' => __( 'Medium' ), |
1001 | 'large' => __( 'Large' ), |
1002 | 'full' => __( 'Full Size' ) |
1003 | ) ); |
1004 |
|
1005 | if ( empty( $check ) ) { |
1006 | $check = get_user_setting('imgsize', 'medium'); |
1007 | } |