php防止sql注入之过滤分页参数

时间：2015-01-23 来源：西部数据作者：西部数据

我们会听过这一种句话,在网络上不要相信任何输入信息,我们都必须进行参数过滤,下面我就来介绍过滤分页参数吧,有需要的朋友可参考,实例代码如下:

$this->load->library ( 'pagination' );

$config ['base_url'] = site_url () . '/guest/show';

$config ['total_rows'] = $c;

$config ['per_page'] = $pernum = 15;

$config ['uri_segment'] = 3;

$config ['use_page_numbers'] = TRUE;

$config ['first_link'] = '第一页';

$config ['last_link'] = '最后一页';

$config ['num_links'] = 5;

$this->pagination->initialize ( $config );

if (! $this->uri->segment ( 3 )) {

    $currentnum = 0;

} else {

    $currentnum = is_numeric($this->uri->segment ( 3 ))?(intval($this->uri->segment ( 3 ) - 1)) * $pernum:0;

}

$current_page=is_numeric($this->uri->segment ( 3 ))?intval($this->uri->segment ( 3 )):1;

if($current_page){

    $data ['title'] = '第'.$current_page.'页-留言本-大冶实验高中首届宏志班网站';

}//开源代码phpfensi.com

else{

    $data ['title'] = '留言本-大冶实验高中首届宏志班网站';

}

$data ['liuyan'] = $this->ly->getLy ( $pernum, $currentnum );

其中有两句代码如下:

$current_page=is_numeric($this->uri->segment ( 3 ))?intval($this->uri->segment ( 3 )):1;

$currentnum = is_numeric($this->uri->segment ( 3 ))?(intval($this->uri->segment ( 3 ) - 1)) * $pernum;