gpml_multi_file_merge_tag_glue

Description

Specify how individual images should be joined for multi-file merge tags

Apply to all forms and fields.

add_filter( 'gpml_multi_file_merge_tag_glue', 'my_custom_function' );

Apply to all fields of a specific form.

add_filter( 'gpml_multi_file_merge_tag_glue_{FORMID}', 'my_custom_function' );

Apply to a specific form and field.

add_filter( 'gpml_multi_file_merge_tag_glue_{FORMID}_{FIELDID}', 'my_custom_function' );

glue string
The string that should be used to join individual image strings.
merge_tag array
An array of properties for the matched merge tag.
form array
The current form object.
field_id array
The ID of the current field.

This filter is available since GP Media Library 1.0.8.