How to define a checkbox for two dimensions?
This page has a list of weeks, the user can check another day for another week.
<input type="checkbox" name="week[]" value="Sun"/>
Sun
<input type="checkbox" name="week[]" value="Mon"/>
Mon
<input type="checkbox" name="week[]" value="Tue"/>
Tue
<input type="checkbox" name="week[]" value="Wed"/>
Wed
<input type="checkbox" name="week[]" value="Thu"/>
Thu
<input type="checkbox" name="week[]" value="Fri"/>
Fri
<input type="checkbox" name="week[]" value="Sat"/>
Sat
<br/>
<br/>
<input type="checkbox" name="week[]" value="Sun"/>
Sun
<input type="checkbox" name="week[]" value="Mon"/>
Mon
<input type="checkbox" name="week[]" value="Tue"/>
Tue
<input type="checkbox" name="week[]" value="Wed"/>
Wed
<input type="checkbox" name="week[]" value="Thu"/>
Thu
<input type="checkbox" name="week[]" value="Fri"/>
Fri
<input type="checkbox" name="week[]" value="Sat"/>
Sat
<br/>
<br/>
.
.
.
<!-- can dynamically add more by javascript -->
But after sending, the whole day will be combined into a 1D array
So, I change the week [] to the week [] []
But it still concatenates all the values in a 1D array and each element of that array is an array
How to send two dimensions of a checkbox?
I expect to be able to use this to loop through all the weeks and days, I don't want the sequence code to be short to weeks.
foreach ($week as $oneWeek)
{
echo 'week<br>';
foreach ($oneWeek as $day)
{
echo $day.'<br>';
}
}
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2 answers
I suggest you group them like this:
if(isset($_POST['submit'])) {
$weeks = $_POST['week'];
// in this way, you could identify the week for each day you checked
}
?>
<form method="POST">
<label><input type="checkbox" name="week[1][]" value="Sun"/>Sun</label>
<label><input type="checkbox" name="week[1][]" value="Mon"/>Mon</label>
<label><input type="checkbox" name="week[1][]" value="Tue"/>Tue</label>
<label><input type="checkbox" name="week[1][]" value="Wed"/>Wed</label>
<label><input type="checkbox" name="week[1][]" value="Thu"/>Thu</label>
<label><input type="checkbox" name="week[1][]" value="Fri"/>Fri</label>
<label><input type="checkbox" name="week[1][]" value="Sat"/>Sat</label>
<br/><br/>
<label><input type="checkbox" name="week[2][]" value="Sun"/>Sun</label>
<label><input type="checkbox" name="week[2][]" value="Mon"/>Mon</label>
<label><input type="checkbox" name="week[2][]" value="Tue"/>Tue</label>
<label><input type="checkbox" name="week[2][]" value="Wed"/>Wed</label>
<label><input type="checkbox" name="week[2][]" value="Thu"/>Thu</label>
<label><input type="checkbox" name="week[2][]" value="Fri"/>Fri</label>
<label><input type="checkbox" name="week[2][]" value="Sat"/>Sat</label>
<br/>
<input type="submit" name="submit" />
</form>
Or that:
$days = array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
?>
<form method="POST">
<?php for($i = 1; $i <= 3; $i++): ?> <!-- print week 1 to week 3 -->
<?php foreach($days as $day): ?>
<label><input type="checkbox" name="week[<?php echo $i; ?>][]" value="<?php echo $day; ?>"/><?php echo $day; ?></label>
<?php endforeach; ?>
<br/><br/>
<?php endfor; ?>
<br/>
<input type="submit" name="submit" />
</form>
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