php 查询和分页

Posted 2021-05-05

<?php 

    /* Get Parameters */
    $curr_url = "search?";
    $url_keyword = $url_category = $url_location = "";
    
    if(isset($_GET['q']) && !empty($_GET['q'])) {
        $url_keyword = "{$_GET['q']}";
        $curr_url .= "q={$url_keyword}";
    } 
    if(isset($_GET['category']) && !empty($_GET['category'])) {
        $url_category = "{$_GET['category']}";
        $curr_url .= "category={$url_category}";
    }
    if(isset($_GET['location']) && !empty($_GET['location'])) {
        $url_location = "{$_GET['location']}";
        $curr_url .= "location={$url_location}";
    }
    // echo $curr_url;

?>

<section class="search-results--pagination">
    <div class="container">
        <div class="col-lg-12 text-center">

            <!-- Top -->
            <nav class="pagination--top">
                <?php if($page != 1) { // SHOW if Page is not Page 1 ?>
                    <a href="<?php $prev_page = $page - 1; echo "{$curr_url}&page={$prev_page}&sort={$sort}"; ?>">
                        &lt;Back
                    </a>
                <?php } ?>
                <a href="<?php echo "{$curr_url}&page={$page}&sort={$sort}"; ?>" class="active">
                    Page <?php echo $page; ?>
                </a>
                <?php if( ($page != $numpages) && ($numpages != 0)) { // SHOW if Page is not the Last Page ?>
                    <a href="<?php $next_page = $page + 1; echo "{$curr_url}&page={$next_page}&sort={$sort}"; ?>">
                        Next &gt;
                    </a>
                    
                <?php } ?>
            </nav>

            <!-- Bottom -->
            <nav class="pagination--bottom">

            <?php if($numpages !== 0) { ?>

                <?php if($page != 1) { // SHOW if Page is not Page 1 ?>
                    <a href="<?php echo "{$curr_url}&page=1&sort={$sort}"; ?>">
                        &lt;&lt;
                    </a>
                <?php } ?>
                
                <?php 
                    $startpage = $page - 2; 
                    if($startpage < 1) { 
                        $startpage = 1; 
                    }
                    $endpage = $page + 2; 
                    if($endpage > $numpages) { 
                        $endpage = $numpages; 
                    }

                    for( $i = $startpage; $i <= $endpage; $i++ ) { 
                ?>

                    <a <?php if($page == $i) { echo "class='active'"; } ?> href="<?php echo "{$curr_url}&page={$i}&sort={$sort}"; ?>"><?php echo $i; ?></a>

                <?php } ?>

                <?php if( ($page != $numpages) && ($numpages != 0) ) { // SHOW if Page is not the Last Page ?>
                    <a href="<?php echo "{$curr_url}&page={$numpages}&sort={$sort}"; ?>">
                        &gt;&gt;
                    </a>
                <?php } ?>


            <?php } ?>

            </nav>

        </div>
    </div>
</section>