PDF Invoice Hooks – gfpdf_invoice_date_format

Description

Use this filter to override the date format used for the Invoice Date and Due Date settings.

Arguments

The following arguments are passed to functions that use this hook:

$format | string

• The format of the outputted date string. For valid options, refer to the format parameter in the PHP documentation.

$settings | array

• The PDF Invoice settings

$entry | array

• The current Gravity Forms Entry

$form | array

• The current Gravity Forms form

Usage

Change the date format for all PDF Invoices across all forms:

add_filter( 'gfpdf_invoice_date_format', function( $format, $settings, $entry, $form ) {
    /* Format: Monday, 22nd January 2024 */
    return 'l, jS F Y';
}, 10, 4 );

Change date format for all PDF Invoices on an individual form:

add_filter( 'gfpdf_invoice_date_format', function( $format, $settings, $entry, $form ) {
    if ( (int) $form['id'] === 20 ) {
        /* Format: Monday, 22nd January 2024 */
        return 'l, jS F Y';
    }
    
    return $format;
}, 10, 4 );

Source Code

This hook can be found in the Gpdf_Invoice_Base::get_date_format() method, which is located in the /config/gpdf-invoice-base.php file in the PDF Working Directory.