How can i get the names or id's of the multiple selected checkboxes on submit, using the PHP? Following is example form. Thanks.
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="checkbox" name="orange" id="orange">
<input type="checkbox" name="apple" id="apple">
<input type="checkbox" name="sky" id="sky">
<input type="checkbox" name="sea" id="sea">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>
Checkbox values are submitted from a form only if the checkbox is selected. What's more, it's the name attribute that counts, not the ID.
There are several ways of handling checkboxes in PHP:
Give all checkboxes the same name followed by a pair of square brackets, so the entire set is treated as an array. In this case, give each checkbox a value.
Give each checkbox a different name and a value.
Give each checkbox a different name, but no value.
In each case, you need to check for the existence of the checkbox name in the $_POST array.
For example:
<input type="checkbox" name="color[]" id="orange" value="orange">
<input type="checkbox" name="color[]" id="apple" value="apple">
To get the values for these checkboxes:
if (isset($_POST['color'])) {
$colors = $_POST['color'];
// $colors is an array of selected values
}
However, if each checkbox has a different name and an explicit value like this:
<input type="checkbox" name="orange" id="orange" value="orange">
<input type="checkbox" name="apple" id="apple" value="apple">
You still need to use isset():
if (isset($_POST['orange'])) {
// orange has been set and its value is "orange"
}
If you don't set a value, the default value is "on", but it won't be in the $_POST array unless it has been selected, so you still need to use isset().
You need to give the inputs the same name:
<input type="checkbox" name="selection[]" value="orange">
<input type="checkbox" name="selection[]" value="apple">
<input type="checkbox" name="selection[]" value="sky">
<input type="checkbox" name="selection[]" value="sea">
Then iterate over the $_POST['selection'] array in PHP.
You won't get the ids but the names will be associative indexes in the $_POST array (and $_REQUEST). NOTE: They will only be available in the array if they were checked by the client.
if ($_POST['oragne'] == 'on')
You can set them up to post to PHP as arrays, if you build them similar to below:
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<input type="checkbox" name="box_group_1[oragne]" id="oragne">
<input type="checkbox" name="box_group_1[apple]" id="apple">
<input type="checkbox" name="box_group_1[sky]" id="sky">
<input type="checkbox" name="box_group_1[sea]" id="sea">
<br>
<br>
<input type="submit" name="Submit" value="Submit">
</form>
<?php
print_r($_POST['box_group_1']);
?>
Related
I have several checkboxes that contain names (ids as referrence to database) - see code below. How can I select all checked values and add them to database (via MySQL) each row for each checked?
<input type="checkbox" value="1" name="names[]">John
<input type="checkbox" value="2" name="names[]">Peter
<input type="checkbox" value="3" name="names[]">Mike
<input type="checkbox" value="4" name="names[]">Kattie
<input type="submit" value="Send" name="send">
After clicking "send" with requiered checked names, the result in database should look like this (I selected John and Mike):
Id
1
3
(only selected ones)
How can I achieve that?
You need to wrap your inputs in a <form> element and give this form a method of post:
<form method="post">
<input type="checkbox" value="1" name="names[]" />John
<input type="checkbox" value="2" name="names[]" />Peter
<input type="checkbox" value="3" name="names[]" />Mike
<input type="checkbox" value="4" name="names[]" />Kattie
<input type="submit" value="Send" name="send" />
</form>
This will allow you to post submitted data from your form inputs to your PHP.
Note: If your HTML is in a different file (ie not in the same file as your form) you can add the action attribute to your form (eg: action="fileWithPHP.php")
Now you can access all checked checkboxes in your PHP using $_POST['names']. This will allow you to get your array of checked values. You can then use a foreach loop to loop through every value in your array:
<?php
if(isset($_POST['names'])) {
$names = $_POST['names'];
foreach($names as $name) {
echo "Add " . $name . " to db here<br />"; // add $name to db
}
}
?>
You can wrap the inputs around a <form> and send it to php and retrieve using $_GET or $_POST and update the database.
I have used POST method here.
HTML:
<form action="test.php" method="post">
<input type="checkbox" value="1" name="names[]">John
<input type="checkbox" value="2" name="names[]">Peter
<input type="checkbox" value="3" name="names[]">Mike
<input type="checkbox" value="4" name="names[]">Kattie
<input type="submit" value="Send" name="send">
</form>
PHP:
if(!empty($_POST['names'])) {
foreach($_POST['names'] as $check) {
echo $check; //instead of echo you can insert it to the database
}
}
I have check box which will be dynamically added along with the textfields.
<input type="checkbox" name="namechkbox[]">
<input type="text" name="nametxt[]">
I will need to map the checkbox value with the text field. I found from other questions that after adding the hidden element over the input element checkbox.
<input type="hidden" name=namechkbox[]" value=0>
Since it's dynamic, it will add the index because of name[] in the name.
What is the way to handle checkbox with value submit for the dynamic elements?
if user checks any checkbox change the values off to on and on to off viceversa.
for ex:
<input type="checkbox" name="namechkbox[0]" value="on" />
<input type="hidden" name="nametxt[0]" value="This my data string 1" />
<input type="checkbox" name="namechkbox[1]" value="off" />
<input type="hidden" name="nametxt[1]" value="This my data string 2" />
now you submits the from then check loop through array to check
if namechkbox[0] value is on
then take the value of nametxt[0]
Try this:
<?php
if(isset($_POST)){
$invite = $_POST;
echo '<pre>';
print_r($invite);
}
?>
<form method="post" action="">
<?php for($i=0;$i<4;$i++)
{
?>
<input value="chkbob1" name="invite['id<?php echo $i;?>']" type="checkbox">
<input value="" name="name['id<?php echo $i;?>']" type="text">
<?php
}
?> <input type="submit">
</form>
Trying to create a search function using multiple checkboxes, but seem to be only finding information related to $_POST requests.
<input type="checkbox" name="fruit" value="1">
<input type="checkbox" name="fruit" value="2">
<input type="checkbox" name="fruit" value="3">
<input type="checkbox" name="fruit" value="4">
<input type="checkbox" name="fruit" value="5">
What is the best way to get the query to look like this
search?fruit=1,2,3,4
Is there a way to do this non ajax?
Just to clarify...
Each value represents a different fruit.
Originally I did this
search?apple=1&orange=1
As I added more checkboxes, the query seemed inefficient.
I know that I can add the checkboxes into the array using the $_POST method
<input type="checkbox" name="fruit[]" value="1">
<input type="checkbox" name="fruit[]" value="2">
As a few have suggested using this technique for a $_GET query would look something like this
search?fruit[]=1&fruit[]=2&fruit[]=5
So the question is really how to clean it up (comma seperated)
NOTE: As others have pointed out, it isn't necessary to pass a single parameter with a comma-separated value to end up with an array or a comma-separated value on the server. Frameworks like PHP can handle this with no JavaScript required. You can simply give each checkbox the same "name" attribute. That will cause multiple parameters with the same name to be passed to the server, which is just fine. In fact, it is the same result you would get if you used a <select multiptle="multiple"> element.
In PHP, if you use a name with square brackets at the end, like fruit[], you can then get an array on the server with:
$_GET['fruit']
And if you want a comma-separated value on the server, you can use:
implode(',', $_GET['fruit'])
But if you really want a single parameter with a comma-separated value, here is how you can do it:
You can use a form with a hidden input. Set the form's "method" to "get" and the hidden input's "name" to "fruit". Then add an event handler that sets the value of the hidden input to the comma-separated string when the form is submitted.
HTML:
<form id="fruitForm" action="search" method="get">
<input type="hidden" name="fruit" />
<label><input type="checkbox" value="1" />apple</label><br />
<label><input type="checkbox" value="2" />banana</label><br />
<label><input type="checkbox" value="3" />orange</label><br />
<label><input type="checkbox" value="4" />pineapple</label><br />
<label><input type="checkbox" value="5" />grapefruit</label><br />
<button type="submit">submit</button>
</form>
JQuery:
$('#fruitForm').submit(function() {
var fruits = $('#fruitForm').find('input:checkbox:checked').map(function() {
return $(this).val();
}).get().join(',');
$('#fruitForm').find('input[name=fruit]').val(fruits);
});
Note: The checkbox elements do not have "name" attributes, so they do not get included in the form submission.
jsfiddle
Use fruit[] as the input name
<input type="checkbox" name="fruit[]" value="1">
<input type="checkbox" name="fruit[]" value="2">
<input type="checkbox" name="fruit[]" value="3">
<input type="checkbox" name="fruit[]" value="4">
<input type="checkbox" name="fruit[]" value="5">
You will get the following:
echo "<pre>", print_r($_GET["fruit"], true);
Output
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
)
Try this, Use checkbox name as fruit[]. In php get the fruit array and converted as string using implode()
<?php
echo $fruits = implode(",",$_GET['fruit']); //1,2,3,4,5
?>
<form>
<input type="checkbox" name="fruit[]" value="1">
<input type="checkbox" name="fruit[]" value="2">
<input type="checkbox" name="fruit[]" value="3">
<input type="checkbox" name="fruit[]" value="4">
<input type="checkbox" name="fruit[]" value="5">
<input type="submit">
</form>
I have several checkbox (I don't know number of them) that create from a loop in a form.
<form>
<input type="checkbox" name="id" value="id">
<input type="checkbox" name="id" value="id">
...//create in a loop
<input type="checkbox" name="id" value="id">
</form>
My question is that How can I read them, If I use <?php $_REQUEST['id']; ?>, it only reads the last checkbox.
Use an input array:
<input type="checkbox" name="id[]" value="id_a">
<input type="checkbox" name="id[]" value="id_b">
<input type="checkbox" name="id[]" value="id_c">
<!-- ^^ this makes it an array -->
$_REQUEST['id'] can be accessed:
foreach($_REQUEST['id'] as $id)
{
echo $id;
}
Outputs
id_a
id_b
id_c
Side note: this works with $_POST and $_GET (not just $_REQUEST). Generally speaking though $_REQUEST should be avoided if possible.
Use unique id's for your checkboxes, e.g.,
<form>
<input type="checkbox" name="id1" value="value1">
<input type="checkbox" name="id2" value="value2">
...//create in a loop
<input type="checkbox" name="id3" value="value3">
</form>
I have 42 checkboxes in my form as im programming a page where the user is choosing their interests.
By naming all the checkboxes "interest", is there any way of making an array of values?
Example:
<input type="checkbox" name="interest" value="34" />
<input type="checkbox" name="interest" value="19" />
//values in array
$interestArray[0] = 34;
$interestArray[1] = 19;
You're looking for this?
<form method="POST" action="">
<input type="checkbox" name="interest[]" value="34" />
<input type="checkbox" name="interest[]" value="19" />
<input type="checkbox" name="interest[]" value="56" />
//values in array
$_POST['interest'][0] = 34;
$_POST['interest'][1] = 19;
$_POST['interest'][2] = 56;
Specifying an arrays key is optional in HTML. If you do not specify the keys, the array gets filled in the order the elements appear in the form.
From PHP manual: How do I create arrays in a HTML ?
Yes you can:
<input type="checkbox" name="formDoor[]" value="A" />Acorn Building<br />
<input type="checkbox" name="formDoor[]" value="B" />Brown Hall<br />
Then use the array:
<?php
$aDoor = $_POST['formDoor'];
.....
}
?>
Use PHP's array shortcut notation: name="interest[]". The [] tell PHP to treat multiple values as part of an array. Each checked checkbox will get its own entry in that array.