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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
---|---|
1387 | * An array of requested width and height values. |
1388 | * |
1389 | * @type int $0 The width in pixels. |
1390 | * @type int $1 The height in pixels. |
1391 | * } |
1392 | * @param string $image_src The 'src' of the image. |
1393 | * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. |
1394 | * @param int $attachment_id Image attachment ID or 0. |
1395 | */ |
1396 | $sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id ); |
1397 |
|
1398 | // Only return a 'srcset' value if there is more than one source. |
1399 | if ( ! $src_matched || ! is_array( $sources ) || count( $sources ) < 2 ) { |
1400 | return false; |
1401 | } |
1402 |
|
1403 | $srcset = ''; |
1404 |
|
1405 | foreach ( $sources as $source ) { |