thinkPHP分页功能实例详解

functions.php 分页函数：

<?php
/**
 * 分页
 * @param $total 总条数
 * @param $page 第几页
 * @param $perpage 每页条数
 * @param $url 链接地址
 * @param $maxpage 最大页码
 * @return string 最多页数
*/
function create_pager_html($total, $page = 1, $perpage = 20, $url = '', $maxpage = null) {
  $totalcount = $total;
  if (empty($url) || !is_string($url)) {
    $url = array();
    foreach ($_GET as $k => $v) {
      if ($k != 'page') {
        $url[] = urlencode($k) . '=' . urlencode($v);
      }
    }
    $url[] = 'page={page}';
    $url = '?' . implode('&', $url);
  }
  if ($total <= $perpage)
    return '';
  $total = ceil($total / $perpage);
  $pagecount = $total;
  $total = ($maxpage && $total > $maxpage) ? $maxpage : $total;
  $page = intval($page);
  if ($page < 1 || $page > $total)
    $page = 1;
    $pages = '<div class="pages"><a href="' . str_replace('{page}', $page - 1 <= 0 ? 1 : $page - 1, $url) . '" rel="external nofollow" title="上一页" class="page_start">上一页</a>';
  if ($page > 4 && $page <= $total - 4) {
    $mini = $page - 3;
    $maxi = $page + 2;
  } elseif ($page <= 4) {
    $mini = 2;
    $maxi = $total - 2 < 7 ? $total - 2 : 7;
  } elseif ($page > $total - 4) {
    $mini = $total - 7 < 3 ? 2 : $total - 7;
    $maxi = $total - 2;
  }
  for ($i = 1; $i <= $total; $i++) {
    if ($i != $page) {
      $pages .= '<a class="page-num" href="' . str_replace('{page}', $i, $url) . '" rel="external nofollow" >' . $i . '</a>';
    } else {
      $pages .= '<span class="page_cur">' . $i . '</span>';
    }
    if ($maxi && $i >= $maxi) {
      $i = $total - 2;
      $maxi = 0;
    }
    if (($i == 2 or $total - 2 == $i) && $total > 10) {
      $pages .= '';
    }
    if ($mini && $i >= 2) {
      $i = $mini;
      $mini = 0;
    }
  }
  $pages .= '<a href="' . str_replace('{page}', $page + 1 >= $total ? $total : $page + 1, $url) . '" rel="external nofollow" title="下一页" class="page_next">下一页</a><span class="pageOp"><span class="sum">共' . $totalcount .
      '条 </span><input type="text" class="pages_inp" id="pageno" value="' . $page . '" onkeydown="if(event.keyCode==13 && this.value) {window.location.href='' . $url . ''.replace(/{page}/, this.value);return false;}"><span class="page-sum">/ ' .
      $total . '页 </span><input type="button" class="pages_btn" value="GO" onclick="if(document.getElementById('pageno').value>0)window.location.href='' . $url . ''.replace(/{page}/, document.getElementById('pageno').value);"></span></div>';
  return $pages;
}

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