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wp_post_revision_field_{$field} ›

Since3.6.0
Deprecatedn/a
apply_filters( "_wp_post_revision_field_{$field}", $compare_from->$field, $field, $compare_from, 'from' )
Parameters: (4)
  • (string) $compare_from->$field The current revision field to compare to or from.
    Required: Yes
  • (string) $field The current revision field.
    Required: Yes
  • (WP_Post) $compare_from The revision post object to compare to or from.
    Required: Yes
  • (string) null The context of whether the current revision is the old or the new one. Values are 'to' or 'from'.
    Required: Yes
Defined at:
Codex:

Contextually filter a post revision field.

The dynamic portion of the hook name, $field, corresponds to each of the post fields of the revision object being iterated over in a foreach statement.





Source

$content_from = $compare_from ? apply_filters( "_wp_post_revision_field_{$field}", $compare_from->$field, $field, $compare_from, 'from' ) : '';