URL带有参数,CI的分页如何制作

<?php
if (! defined ( 'BASEPATH' ))
exit ( 'No direct script access allowed' );

class MY_Pagination extends CI_Pagination {

var $base_url = '';
var $prefix = ''; // A custom prefix added to the path.
var $suffix = ''; // A custom suffix added to the path.


var $total_rows = 0;
var $per_page = 10;
var $num_links = 5;
var $cur_page = 0;
var $use_page_numbers = FALSE;
var $first_link = '&lsaquo; First';
var $next_link = '>';
var $prev_link = '<';
var $last_link = 'Last &rsaquo;';
var $uri_segment = 4;
var $full_tag_open = '';
var $full_tag_close = '';
var $first_tag_open = '';
var $first_tag_close = '&nbsp;';
var $last_tag_open = '&nbsp;';
var $last_tag_close = '';
var $first_url = ''; // Alternative URL for the First Page.
var $cur_tag_open = '&nbsp;<strong>';
var $cur_tag_close = '</strong>';
var $next_tag_open = '&nbsp;';
var $next_tag_close = '&nbsp;';
var $prev_tag_open = '&nbsp;';
var $prev_tag_close = '';
var $num_tag_open = '&nbsp;';
var $num_tag_close = '';
var $page_query_string = FALSE;
var $query_string_segment = 'per_page';
var $display_pages = TRUE;
var $anchor_class = '';

/**
* Constructor
*
* @access public
* @param array initialization parameters
*/
public function __construct($params = array ()) {
$this->full_tag_open = '<div id="page">';
$this->full_tag_close = '</div>';
$this->first_link = '首页';
$this->first_tag_open = ' ';
$this->first_tag_close = ' ';
$this->last_link = '首页';
$this->last_tag_open = ' ';
$this->last_tag_close = ' ';
$this->cur_tag_open = '<b>';
$this->cur_tag_close = '</b> ';
$this->query_string = '';
if (count ( $params ) > 0) {
$this->initialize ( $params );
}

if ($this->anchor_class != '') {
$this->anchor_class = 'class="' . $this->anchor_class . '" ';
}

}

// --------------------------------------------------------------------


/**
* Initialize Preferences
*
* @access public
* @param array initialization parameters
* @return void
*/
function initialize($params = array ()) {
if (count ( $params ) > 0) {
foreach ( $params as $key => $val ) {
if (isset ( $this->$key )) {
$this->$key = $val;
}
}
}
}

function create_links() {
// If our item count or per-page total is zero there is no need to continue.
if ($this->total_rows == 0 or $this->per_page == 0) {
return '';
}

// Calculate the total number of pages
$num_pages = ceil ( $this->total_rows / $this->per_page );

// Is there only one page? Hm... nothing more to do here then.
if ($num_pages == 1) {
return '';
}

// Determine the current page number.
$CI = & get_instance ();

if ($CI->config->item ( 'enable_query_strings' ) === TRUE or $this->page_query_string === TRUE) {
if ($CI->input->get ( $this->query_string_segment ) != 0) {
$this->cur_page = $CI->input->get ( $this->query_string_segment );

// Prep the current page - no funny business!
$this->cur_page = ( int ) $this->cur_page;
}
} else {
if ($CI->uri->segment ( $this->uri_segment ) != 0) {
$this->cur_page = $CI->uri->segment ( $this->uri_segment );

// Prep the current page - no funny business!
$this->cur_page = ( int ) $this->cur_page;
}
}

$this->num_links = ( int ) $this->num_links;

if ($this->num_links < 1) {
show_error ( 'Your number of links must be a positive number.' );
}

if (! is_numeric ( $this->cur_page )) {
$this->cur_page = 0;
}

if ($this->cur_page > $this->total_rows) {
$this->cur_page = ($num_pages - 1) * $this->per_page;
}

$uri_page_number = $this->cur_page;
$this->cur_page = floor ( ($this->cur_page / $this->per_page) + 1 );

$start = (($this->cur_page - $this->num_links) > 0) ? $this->cur_page - ($this->num_links - 1) : 1;
$end = (($this->cur_page + $this->num_links) < $num_pages) ? $this->cur_page + $this->num_links : $num_pages;

if ($CI->config->item ( 'enable_query_strings' ) === TRUE or $this->page_query_string === TRUE) {
$this->base_url = rtrim ( $this->base_url ) . '&amp;' . $this->query_string_segment . '=';
} else {
$this->base_url = rtrim ( $this->base_url, '/' ) . '/';
}

$output = '';

if ($this->first_link !== FALSE and $this->cur_page > ($this->num_links + 1)) {
$first_url = ($this->first_url == '') ? $this->base_url : $this->first_url;
$output .= $this->first_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $first_url ) . $this->query_string . '">' . $this->first_link . '</a>' . $this->first_tag_close;
}

if ($this->prev_link !== FALSE and $this->cur_page != 1) {
$i = $uri_page_number - $this->per_page;

if ($i == 0 && $this->first_url != '') {
$output .= $this->prev_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $CI->config->item ( 'system' ).$this->first_url ) . $this->query_string . '">' . $this->prev_link . '</a>' . $this->prev_tag_close;
} else {
$i = ($i == 0) ? '' : $this->prefix . $i . $this->suffix;
$output .= $this->prev_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $CI->config->item ( 'system' ).$this->base_url . $i ) . $this->query_string . '">' . $this->prev_link . '</a>' . $this->prev_tag_close;
}

}

if ($this->display_pages !== FALSE) {
for($loop = $start - 1; $loop <= $end; $loop ++) {
$i = ($loop * $this->per_page) - $this->per_page;

if ($i >= 0) {
if ($this->cur_page == $loop) {
$output .= $this->cur_tag_open . $loop . $this->cur_tag_close; // Current page
} else {
$n = ($i == 0) ? '' : $i;

if ($n == '' && $this->first_url != '') {
$output .= $this->num_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ($CI->config->item ( 'system' ). $this->first_url ) . $this->query_string . '">' . $loop . '</a>' . $this->num_tag_close;
} else {
$n = ($n == '') ? '' : $this->prefix . $n . $this->suffix;

$output .= $this->num_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $CI->config->item ( 'system' ).$this->base_url . $n ) . $this->query_string . '">' . $loop . '</a>' . $this->num_tag_close;
}
}
}
}
}

if ($this->next_link !== FALSE and $this->cur_page < $num_pages) {
$output .= $this->next_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $CI->config->item ( 'system' ).$this->base_url . $this->prefix . ($this->cur_page * $this->per_page) ) . $this->suffix . $this->query_string . '">' . $this->next_link . '</a>' . $this->next_tag_close;
}

if ($this->last_link !== FALSE and ($this->cur_page + $this->num_links) < $num_pages) {
$i = (($num_pages * $this->per_page) - $this->per_page);
$output .= $this->last_tag_open . '<a ' . $this->anchor_class . 'href="' . site_url ( $CI->config->item ( 'system' ).$this->base_url . $this->prefix . $i ) . $this->suffix . $this->query_string . '">' . $this->last_link . '</a>' . $this->last_tag_close;
}

$output = preg_replace ( "#([^:])//+#", "\\1/", $output );
$output = $this->full_tag_open . $output . $this->full_tag_close;

return $output;
}
}

$config['base_url'] = site_url() . '/controller/function/?condition1=' . $condition1;

$config['page_query_string'] = TRUE;

www.xxx.com/contorller/function/?condition=admin&per_page=XX