qr_custom_placeholder

<?php

// Hook into the correct EM filter for booking/ticket placeholders
add_filter('em_booking_output_placeholder', 'my_em_custom_qr_output', 100, 3);
function my_em_custom_qr_output($replace, $EM_Booking, $result) {
	if ( $result == '#_EMTICKETBOOKINGQR' )
	{
    	// Target the specific placeholder
    	$replace = "<img src='".\EM_Pro\QR::base64('booking/' . $EM_Booking->booking_uuid)['src']."' style='width:200px; height:200px;' />";
	}
    // Return the original value or the generated img tag
    return $replace;
}