如何获得前一天（连续） [英] How to get the previous day (continous)
本文介绍了如何获得前一天（连续）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
你好，我只希望在按下按钮时获得前一天或最后一天的信息，并且它会在最后一天（星期六）显示所有信息，如果再次单击该按钮，它会显示最后一天的信息（星期五），如果我再次点击它（星期四），谢谢帮助我们的朋友们
编辑：
strong> generate_attendance.php if（isset（$ _ POST ['submit1']））{
$ prev_date = date（'Y / m / d'，strtotime（ - 1 days））;
$ query = mysqli_query（$ dbcon，select * from attendance where date_added'$ prev_date'）或die（mysql_error（））;
while（$ row = mysqli_fetch_array（$ query））{
$ attendance_id = $ row ['attendance_id'];
？>
< tr>
< td><？php echo $ row ['lastname']。'，'。$ row ['firstname']; ？>< / TD>
< td><？php echo $ row ['course']; ？>< / TD>
< td><？php echo $ row ['type']; ？>< / TD>
< td><？php echo $ row ['year_level']; ？>< / TD> < td><？php echo $ row ['date_added']; ？< / TD>
< / tr>
<？php
< div class =controls>
< / div>
< / div>
generate_attendance.php（完整代码） $ b
< div class =container>
< div class =margin-top>
< div class =row>
< div class =alert alert-info>
< button type =buttonclass =closedata-dismiss =alert>& times;< / button>
< strong>< i class =icon-user icon-large>< / i>& nbsp;考勤报告< / strong>
< / div>
< div class =span12>
< center class =title>
< h1>考勤列表< / h1>
< / center>
< div class =pull-right>
< a href =onclick =window.print（）class =btn btn-info>< i class =icon-print icon-large>< / i>打印与LT; / A>
< / div>
< form method =post>
< div class =span3>
< div class =control-group>
< label class =control-labelfor =inputEmail><！ - 考勤报告 - >< / label>
< div class =controls>
< label class =control-labelfor =inputEmail>从< / label>
< div class =controls>
< input type =datename =from_dateid =date1alt =dateclass =IP_calendartitle =d / m / Y>
< / div>
< / div>
< / div>
< div class =control-group>
< label class =control-labelfor =inputEmail>至日期< / label>
< div class =controls>
< input type =datename =to_dateid =date2alt =dateclass =IP_calendartitle =d / m / Y>
<！ - < input type =textclass =w8em format -dmy highlight-days-67 range-low-todayname =due_dateid =sdmaxlength =10 style =border：3px double #CCCCCC;需要/> - >
< / div>
< / div>
< div class =control-group>
< div class =controls>
< / div>
< / div>
< div class =controls>
< / div>
< / div>
< div class =span8>
< div class =alert alert-success>< strong>考勤报告< / strong>< / div>
< table cellpadding =0cellspacing =0border =0class =tableid =example>
< thead>
< tr>
< th>名称< / th>
< th>程序代码< / th>
< th>类型< / th>
年级别< / th>
< th>日期登录< / th>
< / tr>
< / thead>
< tbody>
<？php
if（isset（$ _ POST ['submit']））{
$ from_date = $ _ POST ['from_date'];
$ to_date = $ _ POST ['to_date'];
$ query = mysqli_query（$ dbcon，select * from attendance where date_added between'$ from_date'and'$ to_date'）or die（mysql_error（））;
while（$ row = mysqli_fetch_array（$ query））{
$ attendance_id = $ row ['attendance_id'];
？>
< tr>
< td><？php echo $ row ['lastname']。'，'。$ row ['firstname']; ？>< / TD>
< td><？php echo $ row ['course']; ？>< / TD>
< td><？php echo $ row ['type']; ？>< / TD>
< td><？php echo $ row ['year_level']; ？>< / TD>
< td><？php echo $ row ['date_added']; ？>< / TD>
< / tr>
<？php
}}
？>
<？php
if（isset（$ _ POST ['submit1']））{
$ prev_date = date（'Y / m / d'，strtotime（ - 1 days））;
$ query = mysqli_query（$ dbcon，select * from attendance where date_added between'$ curr_date'and'$ prev_date'）或die（mysql_error（））;
while（$ row = mysqli_fetch_array（$ query））{
$ attendance_id = $ row ['attendance_id'];
？>
< tr>
< td><？php echo $ row ['lastname']。'，'。$ row ['firstname']; ？>< / TD>
< td><？php echo $ row ['course']; ？>< / TD>
< td><？php echo $ row ['type']; ？>< / TD>
< td><？php echo $ row ['year_level']; ？>< / TD>
< td><？php echo $ row ['date_added']; ？>< / TD>
< / tr>
<？php
}}
？>
< / tbody>
< / table>
< / form>
< / div>
< / div>
< / div>
< / div>
< / div>
解决方案
可能传递查询参数，表示有多少日期它应该减去，所以网址如下所示：
yourphpscript.php？ days = 3
然后你可以在php中获取它，并更改日期构建：
$ days = $ _GET [days];
if（！isset（$ days））{
$ days = 1;
}
$ days = intval（$ days）;
$ prev_date = date（'Y / m / d'，strtotime（ - 。$ days。days））;
所以现在唯一缺少的就是改变下一个请求的url，像这样：
< form href =？days =<？php echo $ days + 1;？> >
Hello guys I want to get the information of previous date or last day only when I press the button and it will display the all information last day (saturday) and if I click the button again it will shows information of last last day (friday) and if I click it again (thursday) thanks for helping me guys
EDITED:
generate_attendance.php
if(isset($_POST['submit1'])){
$prev_date= date('Y/m/d',strtotime("-1 days"));
$query=mysqli_query($dbcon,"select * from attendance where date_added '$prev_date'")or die(mysql_error());
while($row=mysqli_fetch_array($query)){
$attendance_id=$row['attendance_id'];
?>
<tr>
<td><?php echo $row['lastname'].', '.$row['firstname']; ?></td>
<td><?php echo $row['course']; ?></td>
<td><?php echo $row['type']; ?></td>
<td><?php echo $row['year_level']; ?></td> <td><?php echo $row['date_added']; ?</td>
</tr>
<?php
<div class="controls">
<button name="submit1" type="submit1" class="btn btn-success"><i class="icon-plus-sign icon-large"></i> Previous Day</button>
</div>
</div>
generate_attendance.php (full code)
<div class="container">
<div class="margin-top">
<div class="row">
<div class="alert alert-info">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong><i class="icon-user icon-large"></i> Attendance Report</strong>
</div>
<div class="span12">
<center class="title">
<h1>Attendance List</h1>
</center>
<div class="pull-right">
<a href="" onclick="window.print()" class="btn btn-info"><i class="icon-print icon-large"></i> Print</a>
</div>
<form method="post">
<div class="span3">
<div class="control-group">
<label class="control-label" for="inputEmail"><!-- Attendance Report --></label>
<div class="controls">
<label class="control-label" for="inputEmail">From</label>
<div class="controls">
<input type="date" name="from_date" id="date1" alt="date" class="IP_calendar" title="d/m/Y">
</div>
</div>
</div>
<div class="control-group">
<label class="control-label" for="inputEmail">To Date</label>
<div class="controls">
<input type="date" name="to_date" id="date2" alt="date" class="IP_calendar" title="d/m/Y">
<!-- <input type="text" class="w8em format-d-m-y highlight-days-67 range-low-today" name="due_date" id="sd" maxlength="10" style="border: 3px double #CCCCCC;" required/> -->
</div>
</div>
<div class="control-group">
<div class="controls">
<button name="submit" type="submit" class="btn btn-success"><i class="icon-plus-sign icon-large"></i> Search</button>
</div>
</div>
<div class="controls">
<button name="submit1" type="submit1" class="btn btn-success"><i class="icon-minus-sign icon-large"></i> Previous Day</button>
</div>
</div>
<div class="span8">
<div class="alert alert-success"><strong>Attendance Report</strong></div>
<table cellpadding="0" cellspacing="0" border="0" class="table" id="example">
<thead>
<tr>
<th>Name</th>
<th>Program Code</th>
<th>Type</th>
<th>Year level</th>
<th>Date Log-in</th>
</tr>
</thead>
<tbody>
<?php
if(isset($_POST['submit'])){
$from_date=$_POST['from_date'];
$to_date=$_POST['to_date'];
$query=mysqli_query($dbcon,"select * from attendance where date_added between '$from_date' and '$to_date'")or die(mysql_error());
while($row=mysqli_fetch_array($query)){
$attendance_id=$row['attendance_id'];
?>
<tr>
<td><?php echo $row['lastname'].', '.$row['firstname']; ?></td>
<td><?php echo $row['course']; ?></td>
<td><?php echo $row['type']; ?></td>
<td><?php echo $row['year_level']; ?></td>
<td><?php echo $row['date_added']; ?></td>
</tr>
<?php
}}
?>
<?php
if(isset($_POST['submit1'])){
$prev_date= date('Y/m/d',strtotime("-1 days"));
$query=mysqli_query($dbcon,"select * from attendance where date_added between '$curr_date' and '$prev_date'")or die(mysql_error());
while($row=mysqli_fetch_array($query)){
$attendance_id=$row['attendance_id'];
?>
<tr>
<td><?php echo $row['lastname'].', '.$row['firstname']; ?></td>
<td><?php echo $row['course']; ?></td>
<td><?php echo $row['type']; ?></td>
<td><?php echo $row['year_level']; ?></td>
<td><?php echo $row['date_added']; ?></td>
</tr>
<?php
}}
?>
</tbody>
</table>
</form>
</div>
</div>
</div>
</div>
</div>
解决方案
Probably pass a query parameter, that indicates how many dates it should subtract, so the url looks like this:
yourphpscript.php? days = 3
Then you can get that in the php, and change the date building:
$days = $_GET["days"];
if(!isset($days)){
$days = 1;
}
$days = intval($days);
$prev_date= date('Y/m/d',strtotime("-".$days." days"));
So now the only thing thats missing, is to change the url of the next request, which would look like this:
<form href="?days=<?php echo $days+1;?>" >
这篇关于如何获得前一天（连续）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
