在下面的代码中,我正在搜索一个值。如果搜索了值,它会显示结果,但如果不存在值,它应该不会显示结果。在我的情况下,如果我执行而不搜索任何值,它不会显示任何记录。请任何人帮助我。
<form action="<?php echo site_url('search1_site/index');?>" method = "post">
<input type="text" name = "keyword" />
<input type="submit" id="opn" value = "Search" />
</form>
<?php
if($results){
?> <div id='hideme'>
CLOSE<a href='#' class='close_notification' title='Click to Close'>
<img src="<?php echo base_url('img/close.png'); ?>" width="15" height="15" alt="Close" onClick="hide('hideme')"/>
</a> <div style="background:#FFFFFF; width: 500px; height: 500px; position: absolute; left: 50%; top: 50%; margin-left: -100px; margin-top: -100px" id="modal" >
<table class="display2 table table-bordered table-striped">
<tr>
<th>course_code</th>
<th>course name</th>
</tr>
<tr><?php
foreach ($results as $row) {
?>
<td><?php echo $row->course_code;?></td>
<td><?php echo $row->course_name;?></td>
</tr>
<?php
}
}else{
echo "no results";
}
?>
</table></div></div>
<script>
$('a.modal').bind('click', function(event) {
event.preventDefault();
$('#modal').fadeIn(10);
});
function hide(obj) {
var el = document.getElementById(obj);
el.style.display = 'none';
}
</script>
尝试将name
属性添加到提交按钮,并检查它是否设置在if...else
块之前。
<!-- HTML -->
<input type="submit" name="submit" id="opn" value = "Search" />
// PHP
<?php
if (isset($_POST['submit'])) { // Here
// Do the search here
if($results){
?> <div id='hideme'>
CLOSE<a href='#' class='close_notification' title='Click to Close'>
<img src="<?php echo base_url('img/close.png'); ?>" width="15" height="15" alt="Close" onClick="hide('hideme')"/>
</a> <div style="background:#FFFFFF; width: 500px; height: 500px; position: absolute; left: 50%; top: 50%; margin-left: -100px; margin-top: -100px" id="modal" >
<table class="display2 table table-bordered table-striped">
<tr>
<th>course_code</th>
<th>course name</th>
</tr>
<tr><?php
foreach ($results as $row) {
?>
<td><?php echo $row->course_code;?></td>
<td><?php echo $row->course_name;?></td>
</tr>
<?php
}
}else{
echo "no results";
}
} // If closing
?>
这和你要找的东西相似吗?
如果变量$results
是结果数组,请使用以下内容:
if (count($results) > 0)
{
// show results
} else
{
echo "No results";
}