Noptin_Mailer::get_tracker( $data = array() )
Returns the code used to track email opens.
Source Source
File: includes/class-noptin-mailer.php
public function get_tracker( $data = array() ) { if ( empty( $data['campaign_id'] ) || empty( $data['subscriber_id'] ) ) { return ''; } $url = get_noptin_action_url( 'email_open' ); $url = add_query_arg( array( 'sid' => intval( $data['subscriber_id'] ), 'cid' => intval( $data['campaign_id'] ), ), $url ); $url = esc_url( $url ); return "<img src='$url' style='border:0;width:1px;height:1px;' />"; }
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