' . $instructor->name . '
'; } $certificate_builder_content = get_settings('certificate_builder_content'); $certificate_builder_content = str_replace('{course_duration}', $course_duration, $certificate_builder_content); $certificate_builder_content = str_replace('{instructor_name}', $instructor_name, $certificate_builder_content); $certificate_builder_content = str_replace('{student_name}', $student_name, $certificate_builder_content); $certificate_builder_content = str_replace('{course_title}', $course_title, $certificate_builder_content); $certificate_builder_content = str_replace('{number_of_lesson}', $number_of_lesson, $certificate_builder_content); $certificate_builder_content = str_replace('{qr_code}', $qr_code, $certificate_builder_content); $certificate_builder_content = str_replace('{course_completion_date}', $course_completion_date, $certificate_builder_content); $certificate_builder_content = str_replace('{certificate_download_date}', $certificate_download_date, $certificate_builder_content); $certificate_builder_content = str_replace('{course_level}', $course_level, $certificate_builder_content); $certificate_builder_content = str_replace('{course_language}', $course_language, $certificate_builder_content); // Use regex to update the src attribute of the