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php防止sql注入之过滤分页参数实例 - 站长搜索
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php防止sql注入之过滤分页参数实例

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2014-12-06 15:06:09 转载来源: 网络整理/侵权必删

本文是一个php防止sql注入中过滤分页参数的方法,实例展示了针对分页参数的数值判断问题,感兴趣的朋友可以参考下 就网络安全而言,在网络上不要相信任何输入信息,对于任何输入信息我们都必须进行参数过滤。对此,我们先来看看下面的实例: $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

本文是一个php防止sql注入过滤分页参数的方法,实例展示了针对分页参数的数值判断问题,感兴趣的朋友可以参考下

就网络安全而言,在网络上不要相信任何输入信息,对于任何输入信息我们都必须进行参数过滤。对此,我们先来看看下面的实例:

$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-防SQL注入测试';
}
else{
    $data ['title'] = '留言本-防SQL注入测试';
}
 
$data ['liuyan'] = $this->ly->getLy ( $pernum, $currentnum );


其中:

 

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


这两句判断了参数是否为数字。防止非法字符输入。

 


标签: php 防止 sql 注入 过滤 分页 参数 实例


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