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多条件查询有关问题

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Release: 2016-06-13 12:21:55
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多条件查询问题

<br />$st=$_POST['st'];<br />$et=$_POST['et'];<br />$or_type=$_POST['or_type'];<br />$state=$_POST['state'];<br />//上面是个是传过来的多条件查询,有可能只有一个,也有可能两个<br />if($_POST) {<br />$sql="select * from order a left join user b on a.juserid=b.id where a.mbus_id='$bid' and <span style="color: #FF0000;">....这里是传过来的多条件,怎么写?有可能是3个条件,也有可能是3个条件</span>";<br />}<br />
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------解决思路----------------------
先过滤掉空参数和不参与查询的参数
$param = array_diff($_POST, array('', ’其他需要过滤的值‘));

然后从 $param 组装查询串(假定传入的变量名就是字段名)
foreach($param as $k=>&$v) $v = "$k='$v'";
$where = join(' and ', $param);

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