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UPDATE wp_options SET option_value = replace(option_value, 'http://www.oldurl', 'http://www.newurl') WHERE option_name = 'home' OR option_name = 'siteurl';

UPDATE wp_posts SET guid = replace(guid, 'http://www.oldurl','http://www.newurl');

UPDATE wp_posts SET post_content = replace(post_content, 'http://www.oldurl', 'http://www.newurl');

UPDATE wp_postmeta SET meta_value = replace(meta_value,'http://www.oldurl','http://www.newurl');
mysqldump -u root -p -h host_name_or_ip -P port_number --databases db_name --tables tbl_1 tbl_2 > db_name.sql
/**
 * Verifies if passed URL (remote file or any webpage / webresource) exists
 * The check is implemented via method HEAD, so no data is downloaded anyway
 *
 * @param   <string> Remote URL to verify
 * @returns <bool>   Returns true if given URL exists, false otherwise
 */
function file_exists_remote (string $url) : bool
{
    $handle = curl_init();

    curl_setopt_array($handle, [
        CURLOPT_URL => $url,
        CURLOPT_SSL_VERIFYPEER => 0,
        CURLOPT_NOBODY => 1,
        CURLOPT_HEADER => 0,
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_FOLLOWLOCATION => 1,
        CURLOPT_AUTOREFERER => 1
    ]);

    curl_exec($handle);

    $responseCode = (int) curl_getinfo($handle, CURLINFO_RESPONSE_CODE);

    curl_close($handle);

    return $responseCode === 200;
}

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