Core Function
View Source on Trac ↗ wp_calculate_image_srcset()
wp_calculate_image_srcset( mixed $size_array, mixed $image_src, mixed $image_meta, mixed $attachment_id = 0 ) A helper function to calculate the image sources to include in a 'srcset' attribute.
Parameters 3 required
| Name / Type | Description |
|---|---|
| int[] | $size_array { An array of width and height values. Required |
| $image_src string | The 'src' of the image. Required |
| $image_meta array | The image meta data as returned by 'wp_get_attachment_metadata()'. Required |
| $attachment_id int | Optional. The image attachment ID. Default 0. |
Return Value
((string)
| false) The 'srcset' attribute value. False on error or when only one source exists.
Function Information
Since Version
4.4.0
Source File
wp-includes/media.php
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