checkbox onclick in php function - php

Question

Can i write some code to execute while my check box is checked in my php code..
my declaration of check box is...
<input id="checkbox" name="click" type="checkbox" onclick="check(this)"/>
i thought to perform a function called check() while clicking the check box..
<script type="text/javascript">
function check(cb)
{
if($("input[type=checkbox]:checked"")
{
//my functionality and operations
}
}
But its not working, how can i perform the onclick event in the Checkbox's action..

Answer 1

First of all, there's a mistake. It should be .is(":checked").
function check(cb)
{
if($(cb).is(":checked"))
{
//my functionality and operations
}
}
And the HTML should be:
<input type="checkbox" onclick="check(this);" />
Or, if you wanna invoke a PHP Function after clicking on Checkbox, you need to write an AJAX code. If this is the case, in your if condition, and checked condition, you can call a PHP file, that calls only this function.
function check(cb)
{
if($(cb).is(":checked"))
{
$.getScript("clickCheckbox.php");
}
}
And you can write JavaScript plus PHP in the clickCheckbox.php file, say something like this:
clickCheckbox.php
<?php
header("Content-type: text/javascript");
unlink("delete.png");
echo 'alert("Deleted!");';
?>
Once you click on the checkbox, and if the state is checked, it gives out an AJAX call to this PHP file, where you are deleting a file delete.png and in the echo statement, you are outputting a JavaScript alert, so that you will get an alert message saying Deleted!.

Answer 2

$('#myform :checkbox').click(function() {
var $this = $(this);
// $this will contain a reference to the checkbox
if ($this.is(':checked')) {
// the checkbox was checked
} else {
// the checkbox was unchecked
}
});
Where your form has id myform

Answer 3

use
if ($('#checkbox').is(':checked'))
or inside an event
$('#checkbox').click(function(){
if ($(this).is(':checked')){
//your routine here if checked
}else{
//routine here if not checked
}
});

Answer 4

You can put like this:
Include the column checked in your table with default value NO.
Then after your SELECT statement show the array.
page1.php
<input type=checkbox value="<?php $row['checked']?>" onclick="location.href = 'update.php?id=<?php echo $row['id']; ?>&checked=<?php if ($row['checked'] == 'YES') { ?>NO<?php } else {?>YES<?php } ?>';" <?php if ($row['checked'] == 'YES') { ?> checked <?php } ?>>
update.php
<?php include('server.php'); ?>
<?php
$id = $_GET['id'];
$checked = $_GET['checked'];
if(isset($_GET['id']))
{
$sql = "UPDATE table SET
checked = '$checked'
WHERE `id` = '$id' ";
if ($conn->query($sql) === TRUE)
{
}
else
{
echo "Error updating record: " . $conn->error;
}
header('location: page1.php');
}
?>

Answer 5

Try this one
<input id="checkbox" name="click" type="checkbox" onclick="check()"/>
//in js
if( $('input[name=checkbox]').is(':checked') ){
// your code
}