Export Yoast redirects to CSV file

export-yoast-redirects.php

<?php

$array_base = get_option('wpseo-premium-redirects-base');
foreach ( $array_base as $key => $row ) {
  file_put_contents( ABSPATH . 'yoast-redirects-base.csv', $key . ',' . $row[ 'url' ] . "\n", FILE_APPEND );
}

$array_plain = get_option('wpseo-premium-redirects-export-plain');
foreach ( $array_plain as $key => $row ) {
  file_put_contents( ABSPATH . 'yoast-redirects-export-plain.csv', $key . ',' . $row[ 'url' ] . "\n", FILE_APPEND );
}

$array_regex = get_option('wpseo-premium-redirects-export-regex');
foreach ( $array_regex as $key => $row ) {
  file_put_contents( ABSPATH . 'yoast-redirects-export-regex.csv', $key . ',' . $row[ 'url' ] . "\n", FILE_APPEND );
}