how to create query arg for post request in wordpress code example

Example 1: wp query

have_posts() ) {
    echo '
';
    while ( $the_query->have_posts() ) {
        $the_query->the_post();
        echo '
' . get_the_title() . '
';
    }
    echo '
';
} else {
    // no posts found
}
/* Restore original Post Data */
wp_reset_postdata();

Example 2: wp query search

$query = new WP_Query( array( 's' => 'keyword' ) );