Control Search Parameters in PHP Wordpress

Question

Search parameters are null in PHP Wordpress

When user press search button, it make query string parameters even if search fields are empty

www.example.com/?ssc=&sst=&s=

How i can check it and remove (Don't Allow) null parameters from url

Answer 1

If you know where your form is situated, add required to input text

<input type="text" name="s" id="search" value="<?php the_search_query(); ?>" required />

or else create searchform.php in your theme directory and add following code

<form action="/" method="get">
    <label for="search">Search in <?php echo home_url( '/' ); ?></label>
    <input type="text" name="s" id="search" value="<?php the_search_query(); ?>" required  />
    <input type="image" alt="Search" src="<?php bloginfo( 'template_url' ); ?>/images/search.png" />
</form>