phpcms广告按不同地区显示的效果实现
1. 数据库执行以下sql语句,以记录需要的字段值;
ALTER TABLE `phpcms_ads` ADD `areaid` SMALLINT( 5 ) UNSIGNED NOT NULL DEFAULT '0' COMMENT '广告所属地区id',
ADD `ischild` TINYINT( 1 ) UNSIGNED NOT NULL DEFAULT '0' COMMENT '是否显示到下级子地区';
ALTER TABLE `phpcms_ads` ADD INDEX ( `areaid` ) ;
2. 找到 ,在合适的位置增加如下代码:
<tr>
<th><strong>显示地区</strong></th>
<td><input type="hidden" name="ads[areaid]" id="areaid" value="">
<span id="load_areaid"></span>
<a href="javascript:areaid_reload();"> 重选</a>
<script type="text/javascript">
function areaid_load(id)
{
$.get("load.php?"+Math.floor(Math.random()*1000), { field: 'areaid', id: id },
function(data){
$('#load_areaid').append(data);
});
}
function areaid_reload()
{
$('#load_areaid').html('');
areaid_load(0);
document.getElementById('areaid').value = '';
}
areaid_reload();
</script> </td>
</tr>
<tr>
<th><strong>是否下级显示</strong></th>
<td><input type='radio' name='ads[ischild]' value='1' checked> 是 <input type='radio' name='ads[ischild]' value='0'> 否 注意:选择是将在下级地区显示;选择否则仅仅显示在选中地区</td>
</tr>
3. 找到 ,在适当的位置增加以下代码:
<tr>
<th><strong>显示地区</strong></th>
<td><input type="hidden" name="ads[areaid]" id="areaid" value="<?php echo $_ads['areaid'];?>">
<span id="load_areaid"><?php echo $_ads['areaid'] ? areaname($_ads['areaid']) : '';?></span>
<a href="javascript:areaid_reload();"> 重选</a>
<script type="text/javascript">
function areaid_load(id)
{
$.get("load.php?"+Math.floor(Math.random()*1000), { field: 'areaid', id: id },
function(data){
$('#load_areaid').append(data);
});
}
function areaid_reload()
{
$('#load_areaid').html('');
areaid_load(0);
document.getElementById('areaid').value = '';
}
</script> </td>
</tr>
<tr>
<th><strong>是否下级显示</strong></th>
<td><input type='radio' name='ads[ischild]' value='1' <?php echo $_ads['ischild']?'checked':'';?>> 是 <input type='radio' name='ads[ischild]' value='0' <?php echo !$_ads['ischild']?'checked':'';?>> 否 注意:选择是将在下级地区显示;选择否则仅仅显示在选中地区;如果想显示到湖北省以下全部地区,请直接选择湖北即可!</td>
</tr>
4. 找到 ,删除函数 show(),改写成:
function show($placeid,$areaid)
{
global $_username;
$placeid = intval($placeid);
if(!$placeid) return FALSE;
$ip = IP;
$time = time();
$areaid = intval($areaid);
$AREA = cache_read('area_'.$areaid.'.php');
$areastr = $areaid?" AND a.areaid IN( ".$AREA['arrparentid'].",$areaid )":'';//地区为0,全国性广告,可随意显示;
$adses = $this->db->select("SELECT * FROM ".DB_PRE."ads a, $this->table p WHERE a.placeid=p.placeid AND p.placeid=$placeid $areastr AND a.fromdate<=UNIX_TIMESTAMP() AND a.todate>=UNIX_TIMESTAMP() AND a.passed=1 AND a.status=1 AND p.passed=1");
if($adses[0]['option'])
{
foreach($adses as $ads)
{
$contents[] = ads_content($ads, 1);
$this->db->query("INSERT INTO $this->stat_table (`adsid`, `username`, `ip`, `referer`, `clicktime`, `type`) VALUES ('$ads[adsid]', '$_username', '$ip', '$this->referer', '$time', '0')");
$template = $ads['template'] ? $ads['template'] : 'ads';
}
}
else
{
do{
$ads = $this->db->get_one("SELECT * FROM ".DB_PRE."ads a, $this->table p WHERE a.placeid=p.placeid AND p.placeid=$placeid $areastr AND a.fromdate<=UNIX_TIMESTAMP() AND a.todate>=UNIX_TIMESTAMP() AND a.passed=1 AND a.status=1 ORDER BY rand() LIMIT 1");
//防止空白产生,如A广告仅允许显示在湖北,则访问武汉的时候,会读出来,要排除掉http://www.k686.com
if($ads['ischild'] || $ads['areaid']==$areaid || !$ads['areaid']) break;
}
while(true);
$contents[] = ads_content($ads, 1);
$this->db->query("INSERT INTO $this->stat_table (`adsid`, `username`, `ip`, `referer`, `clicktime`, `type`) VALUES ('$ads[adsid]', '$_username', '$ip', '$this->referer', '$time', '0')");
$template = $ads['template'] ? $ads['template'] : 'ads';
}
include template('ads', $template);
}
5. 找到 ,将 $place->show($id); 改成 $place->show($id,$areaid);
6. 注意外部调用的时候,带上areaid参数,比如:
<script language="javascript" src="http://www.k686.com/data/js.php?id=1&areaid={$areaid}"></script>