为月份和年份创建一个下拉列表并在 php 中选择
[英]create a dropdown list for month and year and selected in php
问题描述
I have a "search by month and year " feature and have listed the months and year in a drop-down (select) field.so far this is working perfect but i need to show selected (month and year) after submitting the form .but i unable to do how to get selected year and month in drop down.below is my php JavaScript code .anyone help me how to solve
我有一个“按月和年搜索”功能，并在下拉（选择）字段中列出了月和年。到目前为止，这是完美的，但我需要在提交表单后显示所选（月和年）。但我无法做如何在下拉列表中选择年份和月份。下面是我的 php JavaScript 代码。任何人都可以帮助我如何解决
below is the two dropdowns for month year .the month and year sholud be shown as selected.下面是月份年份的两个下拉菜单。月份和年份应该显示为选中状态。
<select name="month" class="form-control" >
<?php
for ($i = 0; $i <= 12; ++$i)
{
$time = strtotime(sprintf('+%d months', $i));
$label = date('F ', $time);
$value = date('m', $time);
printf('<option value="%s" selected="selected">%s</option>', $value, $label);
}
?>
</select>
<select name="year" class="form-control">
<?php
for ($i = 0; $i <= 12; ++$i)
{
$time = strtotime(sprintf('-%d years', $i));
$value = date('Y', $time);
$label = date('Y ', $time);
printf('<option value="%s" selected="selected">%s</option>', $value, $label);
}
?>
</select>
so far this is working perfect but i need to show selected (month and year) after submitting the form .but i unable to do how to get selected year and month in drop down.below is my php java-script code .anyone help me how to solve it?到目前为止，这是完美的，但我需要在提交表单后显示选定的（月份和年份）。但我无法做如何在下拉列表中选择年份和月份。下面是我的 php java 脚本代码。任何人都可以帮助我如何解决？
3 个解决方案
解决方案1
1 2017-12-29 08:57:19
Try this code试试这个代码
<select name="month" class="form-control" >
<?php
for ($i = 1; $i <= 12; ++$i){
$time = strtotime(sprintf('+%d months', $i));
$label = date('F ', $time);
$value = date('m', $time);
echo '<option value="'.$value.'" ';
if((isset($_GET['month']))&&($value==$_GET['month']))echo 'selected';// Check if form submitted or not. select the month if yes
echo '>'.$label.'</option>';
}
?>
</select>
<select name="year" class="form-control">
<?php
for ($i = 0; $i <= 12; ++$i){
$time = strtotime(sprintf('-%d years', $i));
$value = date('Y', $time);
echo '<option value="'.$value.'" ';
if((isset($_GET['year']))&&($value==$_GET['year']))echo 'selected';// Check if form submitted or not. select the year if yes
echo '>'.$value.'</option>';
}
?>
</select>
解决方案2
0 已采纳 2017-12-29 08:09:08
You should be able to use the value held in the $_REQUEST array to find the value of each select menu.您应该能够使用$_REQUEST数组中保存的值来查找每个选择菜单的值。 However as you have stated the form uses GET it is preferable to then use values from the $_GET array as this leaves the POST method free and will not affect the selected values should there be any POSTing of data ( ajax etc )但是，正如您所说，表单使用GET之后最好使用$_GET数组中的值，因为这样可以使 POST 方法空闲，并且如果有任何数据发布（ajax 等），则不会影响所选值
<!doctype html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
</head>
<body>
<form>
<select name="month" class="form-control">
<?php
$month = !empty( $_GET['month'] ) ? $_GET['month'] : 0;
for ($i = 0; $i <= 12; ++$i) {
$time = strtotime(sprintf('+%d months', $i));
$label = date('F ', $time);
$value = date('m', $time);
$selected = ( $value==$month ) ? ' selected=true' : '';
printf('<option value="%s"%s>%s</option>', $value, $selected, $label );
}
?>
</select>
<select name="year" class="form-control">
<?php
$year = !empty( $_GET['year'] ) ? $_GET['year'] : 0;
for ($i = 0; $i <= 12; ++$i) {
$time = strtotime(sprintf('-%d years', $i));
$value = date('Y', $time);
$label = date('Y ', $time);
$selected = ( $value==$year ) ? ' selected=true' : '';
printf('<option value="%s"%s>%s</option>', $value, $selected, $label);
}
?>
</select>
<input type='submit' />
</form>
</body>
</html>
解决方案3
0 2017-12-29 08:09:53
For month code对于月份代码
for ($i = 0; $i <= 12; ++$i){
$time = strtotime(sprintf('+%d months', $i));
$label = date('F ', $time);
$value = date('m', $time);
$sleceted='';
if(isset($_REQUEST['month']){
$sleceted=$_REQUEST['month']== $value?'selected:selected':'';
}
printf('<option value="%s" '.$sleceted.'>%s</option>', $value, $label);
}
for year code对于年份代码
for ($i = 0; $i <= 12; ++$i){
$time = strtotime(sprintf('+%d months', $i));
$label = date('F ', $time);
$value = date('m', $time);
$sleceted='';
if(isset($_REQUEST['year']){
$sleceted=$_REQUEST['year']== $value?'selected:selected':'';
}
printf('<option value="%s" '.$sleceted.'>%s</option>', $value, $label);
}
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