Submiting custom form give error 404

Question

I have custom search form on category category.php list template with following code:

<?php $searchresults = site_url('/?p=1365'); ?>

<form class="search-slide" id="search-slide" name="search-slide" action="<?php echo $searchresults; ?>" method="post">
    <input type="text" name="s_name" id="s_name" size="30" value="" class="find s-name" placeholder="Name Lastname" tabindex="1" />
    <input type="text" name="s_offer" id="" size="30" value="" class="find s-tag"  placeholder="in research offer" tabindex="2" />
    <input type="text" name="s_area" id="" size="30" value="" class="find s-obsz"  placeholder="in Application area" tabindex="3" />
    <input name="s_tags" id="tag-list" value="" tabindex="4" />

    <input class="slideradio" type="checkbox" id="w01" name="w[]" value="w01" />
        <label for="w01"><span></span>Faculty of Architecture</label>
    <input class="slideradio" type="checkbox" id="w02" name="w[]" value="w02" />
        <label for="w02"><span></span>Faculty of Civil Engineering</label>
    <input class="slideradio" type="checkbox" id="w03" name="w[]" value="w03" />
        <label for="w03"><span></span>Faculty of Chemistry</label>

    <input class="slideradio" type="radio" id="adefault" name="s_sort" value="" checked="checked"  tabindex="6"/>
    <label for="adefault"><span></span>Default</label>
    <input class="slideradio" type="radio" id="aasc" name="s_sort" value="" tabindex="7" />
    <label for="adefault"><span></span>Sort A-Z</label>
    <input class="slideradio" type="radio" id="adsc" name="s_sort" value="" tabindex="8" />
    <label for="adefault"><span></span>Sort Z-A</label>

    <button id="slide_search_btn" type="submit">Search</button>
</form>

And I'd like to send variables into another wordpress website search-result.php (template page is added and published in dashboard). But when I click Search button I get error 404 (I have red about naming name fields but I think mine are Ok). But when I enter page directly in browser I got page normally. Can anybody direct me how to resolv this problem?

Answer 1

I found solution: IF you're using permalinks you have to use get_permalink() function:

 <?php $searchresults = site_url('/?p=1365'); ?>

change to

<?php $searchresults = get_permalink( 1365 ); ?>