我有一个自定义分页，使用带有get操作的表单，这样我就可以有一个页面跳转框。在您输入非实际页面之前，一切都正常。例如负数、文本或大于实际页数的数字。

我要做的是截取变量，如果页面不存在，则重定向页面。

这是我的职责。php

add_action(\'init\', \'k2wp_pagination\');
function k2wp_pagination($k2url = \'\', $pages = \'\', $range = 2) {

    $showitems = ($range * 2) + 1;

    global $paged;

    if(empty($paged)) $paged = 1;

    if($pages == \'\') {
        global $wp_query;
        $pages = $wp_query->max_num_pages;
        if(!$pages) {
            $pages = 1;
        }
    }

    if(1 != $pages) {
        echo \'<div class="pagination-wrapper clearfix">\';
        echo \'<form action="\' . get_bloginfo(\'url\') .\'/\'. $k2url . \'" class="pagination-buttons" method="get">\';
        echo \'<div class="pager-buttons btn-group">\';
        if($paged > 2 && $paged > $range + 1 && $showitems < $pages) echo \'<button value="1" name="paged" class="btn">&laquo; First</button>\';
        if($paged > 1 && $showitems < $pages) echo \'<button value="\' . ($paged - 1) . \'" name="paged" class="btn"><i class="icon-angle-left"></i></button>\';

        for ($i=1; $i <= $pages; $i++) {
            if (1 != $pages &&( !($i >= $paged+$range+1 || $i <= $paged-$range-1) || $pages <= $showitems )) {
            echo ($paged == $i)? \'<button value="\' . $i . \'" name="paged" class="btn disabled" disabled="disabled">\' . $i . \'</button>\' : \'<button value="\' . $i . \'" name="paged" class="btn">\' . $i . \'</button>\';
            }
        }

        if ($paged < $pages && $showitems < $pages) echo \'<button value="\' . ($paged + 1) . \'" name="paged" class="btn"><i class="icon-angle-right"></i></button>\';  
        if ($paged < $pages-1 && $paged + $range - 1 < $pages && $showitems < $pages) echo \'<button value="\' . $pages . \'" name="paged" class="btn">Last &raquo;</button>\';
        echo \'</div>\';
        echo \'</form>\';
        echo \'<form action="\' . get_bloginfo(\'url\') .\'/\'. $k2url . \'" class="pagination-jump" method="get">\';
        echo \'<div class="pager-jump">Page <input alt="Enter page to which you wish to jump" name="paged" type="text" value="\' . $paged . \'" class="jumper"> of \' . $pages . \' <button class="btn">Go</button></div>\';
        echo \'</form>\';
        echo \'</div>\';
    }
}