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Editorial Team
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Asked: 2026-05-31T21:21:49+00:00

I have a form with multiple dropdowns consisting of multiple values. I’m trying to

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I have a form with multiple dropdowns consisting of multiple values.

I’m trying to run a query based on what dropdown has been selected, so if only 1 has been filled out, run the first query, if 2 options have been filled out, run the second and so on and so forth. I’m sure there’s a better way to do this only i’m not too proficient with HTML, any helps greatly appreciated…

<!-- Search query -->

    <form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
        <input type="hidden" name="search" value="complete">
        <select name="OPT1">
            <option value="#">Choose Your Fuel Type</option>
            <option value="petrol">Petrol</option>
            <option value="diesel">Diesel</option>
            <option value="lpg">LPG</option>
        </select>

        <select name="OPT2">
            <option value="#">Choose Your Fuel Type</option>
            <option value="petrol">Petrol</option>
            <option value="diesel">Diesel</option>
            <option value="lpg">LPG</option>
        </select>

        <select name="OPT3">
            <option value="#">Choose Your Fuel Type</option>
            <option value="petrol">Petrol</option>
            <option value="diesel">Diesel</option>
            <option value="lpg">LPG</option>
        </select>
        <input type="submit" />
    </form>



    <?php 
        if ($_POST['OPT1'] != '') {     

        echo 'option 1';         
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } else if ($_POST['OPT2'] != '') {               

        echo 'option 2';
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' OR wpostmeta.meta_value = '".$_POST['OPT2']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } 

        else if ($_POST['OPT3'] != '') {                 

        echo 'option 3';
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' OR wpostmeta.meta_value = '".$_POST['OPT2']."' OR wpostmeta.meta_value = '".$_POST['OPT3']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } 


    ?>

Ive got this working…

<?php 
        if ($_POST['OPT2'] == '' && $_POST['OPT3'] == '') {     

        echo 'option 1';         
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } else if ($_POST['OPT1'] != '' && $_POST['OPT2'] != '' && $_POST['OPT3'] == '') {               

        echo 'option 2';
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' OR wpostmeta.meta_value = '".$_POST['OPT2']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } 

        else if ($_POST['OPT1'] != '' && $_POST['OPT2'] != '' && $_POST['OPT3'] != '') {                 

        echo 'option 3';
        $pageposts = $wpdb->get_results("SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_value = '".$_POST['OPT1']."' OR wpostmeta.meta_value = '".$_POST['OPT2']."' OR wpostmeta.meta_value = '".$_POST['OPT3']."' ORDER BY wpostmeta.meta_value DESC", OBJECT); 

        } 


    ?>

only when pulling my results it pulls really sporadically…

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1 Answer

  1. Editorial Team

    I think you should remove the # from the option value for the options that are not selected, ie:

    <option value="">Choose Your Fuel Type</option>

    then when you test:

    $_POST['OPT1'] != ''

    It should work properly.

    If you are trying to check if both option 1 and 2 have values you would use:

    if ($_POST['OPT1'] != '' && $_POST['OPT2'] != '') {
  // run query
}

    edit:
    just reread the last bit you could try something like this to see how many values have been entered in total (not specifically which ones) you could just have a variable called $counter and run each if statement separately (not using elseif) and in each if statement add one to the counter $counter++; at the end you could then see run an if satement to see ifthe value of counter is 0,1,2 or 3.

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