ajax编码有关问题，大侠帮忙！

ajax编码问题，在线等大侠帮忙！！！

	public function ajax_page(){<br />		//header('Content-Type:text/html;charset=gbk');<br />		error_reporting(E_ALL);<br />		$page = $this->input->post('pg');<br />		$where = $this->input->post('action');<br />		$array = explode('_',$where);<br />		$condition['group_id'] = $array[0];<br />		$condition['status'] = $array[1];<br />		$condition['username'] = @iconv( "UTF-8","GBK", $array[2]);<br />echo $condition['username'];<br />		$condition['display'] = 15;<br />		$condition['page'] = ($page-1) * 15;<br />		$num = $this->member_model->Selcount($condition);<br />        $url = base_url()."/index.php/admin/member_list/";<br />		$this->page->select = $where;<br />        $this->page_model->page($num,"15",$page,$url);<br />        $data['page'] = $this->page->pagenav;<br />		$data['user'] = $this->member_model->Selmember($condition);<br />        $this->load->language('admin/member');<br />        $data['lang'] = $this->lang->line('HtmlLanguages');<br />  	 	//print_r($data['user']);//exit;<br /><br />   		$this->load->view('admin/member_list_ajax', $data);<br /><br />	}

<script type="text/javascript"> <br />$(function(){<br />    $('#begin_date').datepicker({dateFormat: 'yy-mm-dd'});<br />    $('#end_date').datepicker({dateFormat: 'yy-mm-dd'});<br />});<br />function checkdata(){<br />	if((!$('#begin_date').val()&&$('#end_date').val())||($('#begin_date').val()&&!$('#end_date').val())){<br />		alert('<?=$lang['date_error']?>');<br />		return false;<br />	}<br />}<br />function php300(page,where){<br />	var ajax_url = "/admin/ajax_page/";<br />    where = encodeURIComponent(where);<br />	$.ajax({<br />		type: "POST",<br />		url: ajax_url,<br />		data:{ <br />			action: where,<br />			pg: page<br />		},<br />		success: function(msg){<br />			//alert(msg);<br />			$("#ajax").html(msg);<br />		},//$("#pager").html(msg);<br />		error:function(){ <br />			$("#ajax").html("请求失败"); <br />		}<br />    });<br />   <br />}<br /></script>

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------解决方案--------------------
接收的参数用urldecode解码试试
------解决方案--------------------
你的客户端用的是 jquery 吧？
jq 的 ajax 是不需要自己做 url 编码的
既然你已经有 where = encodeURIComponent(where); 了
那么就需要自己再做一次 url 解码
$condition['username'] = iconv( "UTF-8","GBK", uredecode($array[2]));