我目前对以下代码存在疑问:
<form action="" method="post">
<input type="text" name="term" placeholder="Search Terms"/>
<select id=""drop"" name="drop"">
<option value="CODE">Code</option>
<option value="SCINAME">Scientific Name</option>
<option value="COLLECTOR">Holder</option>
<option value="DATA">Data</option>
</select>
<br/>
<button type="submit" class="button primary">Search</button>
</form>
<?php
if (!empty($_REQUEST['term'])) {
$term = mysql_real_escape_string($_REQUEST['term']);
$drop = ($_REQUEST['drop']);
$sql = "SELECT * FROM ANIMAIS WHERE '%".$drop."%' LIKE '%".$term."%'";
$r_query = mysql_query($sql);
while ($row = mysql_fetch_array($r_query)){
echo '<br />code: ' .$row['CODE'];
echo '<br />Name: ' .$row['SCINAME'];
echo '<br /> Colector: '.$row['COLLECTOR'];
echo '<br /> Local: '.$row['LOCAL'];
echo '<br /> Data: '.$row['DATA'];
echo '<br /> Descr: '.$row['DESCRIPTION'];
echo '<br />';
}
}
?>
问题是代码没有“运行”$ drop变量,但是如果我从表单中删除下拉列表并更改以下行:
$sql = "SELECT * FROM ANIMAIS WHERE '%".$drop."%' LIKE '%".$term."%'";
到
$sql = "SELECT * FROM ANIMAIS WHERE SCINAME LIKE '%".$term."%'";
它确实有效,但是在SCINAME列上搜索,我不想做的是允许下拉列表选择要查询的SQL列,但实际的解决方案效果不好。
提前感谢您的帮助。
答案 0 :(得分:0)
列名不需要'%%'
。它应该是 -
$sql = "SELECT * FROM ANIMAIS WHERE ".$drop." LIKE '%".$term."%'";
答案 1 :(得分:0)
您的陈述和查询中的错别字
for var i = 0; i < downloads_requests.count; i++ {
var r :AnyObject!
r = downloads_requests.objectAtIndex(i) as! Request
if r != nil{
(r as! Request).cancel()
}
}
应该是
<select id=""drop"" name="drop"">
^^ ^^ ^^
您在属性值上添加了额外的<select id="drop" name="drop">
逗号
,您的查询必须
""