Accessing Checkboxes Values And Using Functions in PHP - php

I am having problem in this situation, i searched alot and don't know what should i do with it....
I have got like 4 checkboxes, on each checkbox a certain function is being performed. I have this html code for checkboxes,
<form action="check.php" method="post">
<table border="1" width="200">
<tr>
<td>
<input type="checkbox" name="first[]" value="option1" />
</td>
<td width="500">
<strong>Option 1</strong>
</td>
</tr>
<tr>
<td>
<input type="checkbox" name="first[]" value="option2" />
</td>
<td width="500">
<strong>Option 2</strong>
</td>
</tr>
<tr>
<td>
<input type="checkbox" name="first[]" value="option3" />
</td>
<td width="500">
<strong>option 3</strong>
</td>
</tr>
</table>
<table border="1" width="200">
<tr>
<td>
<input type="text" name="entered_value"/>
</td>
</tr>
</table>
<table border="1" width="200">
<tr>
<td>
<input type="submit" value="Submit"/>
</td>
</tr>
</table>
</form>
I am accessing these checkboxes using this code
<?php
if (isset($_POST['submit']))
{
if(isset($_POST['first']))
{
$get_data_checkboxes = $_POST['first'];
}
else
{
$get_data_checkboxes = "";
}
print_r($get_data_checkboxes);
exit();
}
?>
What i am facing problem is like i need to run a function on each checkbox ticked, e.g. if the person ticks Option 1 then i should be able to run function 1 and so on...
any help will be appreciated :)

If you want to select multiple checkboxes, you can try something like this:
for( $i = 0; $i < count( $_POST['first'] ); $i++ ) {
if( $_POST['first'][$i] == 'option1' ) {
echo "function1";
} else if( $_POST['first'][$i] == 'option2' ) {
echo "function2";
} else if( $_POST['first'][$i] == 'option3' ) {
echo "function3";
}
}

You don't need the line
if (isset($_POST['submit']))
Without that your code works fine, and you can use that to call your functions like this:
<?php
if(isset($_POST['first']))
{
$get_data_checkboxes = $_POST['first'];
foreach($get_data_checkboxes as $value){
//call functions named option1(), option2(), etc..
call_user_func($value);
}
}
else{
$get_data_checkboxes = "";
}
?>

Related

increment variable on submit to update mysql query

I am new to PHP(loving it already)
I have a form that looks up a table that sends 'golf hole' info back and allows a golfer to input their score of the hole. Problem I have is that I can present the first hole by looking up the hole_detail table but then cant figure out how loop through the table for hole 2, 3.....18 when the form is submitted. I have searched stackoverflow but cant find anything that specific about it. I have tried an if statement, if (isset($_POST['Submit'])) to try increment the $hole_id. Am I completely going about it the wrong way? Thanks in advance.
<?php
include ('../scripts/dbconfig.php');
# get the most recent course name:
$get_course_name = mysql_query("SELECT course_name FROM comp ORDER BY PID DESC LIMIT 1");
$show_course_name = mysql_fetch_array($get_course_name);
if (isset($_POST['Submit'])) {
$hole_id =1;
else {
$hole_id = $hole_id + 1;
}
}
# get the hole yardage and SI from most recent selected golf course:
$get_course_detail = mysql_query("SELECT * FROM `course_detail` WHERE course_name = '". $show_course_name['course_name'] . "'");
$show_course_detail = mysql_fetch_array($get_course_detail);
$get_hole_detail = mysql_query("SELECT * FROM `course_detail`,`phoenix_hole` WHERE Course_ID = 6 AND hole_id = $hole_id");
$show_hole_detail = mysql_fetch_array($get_hole_detail);
?>
</head>
<body>
<table width="300" cellspacing="0" cellpadding="0">
<tr>
<td width="40"><?php echo $show_course_name['course_name'];?></td>
</tr>
<tr>
<td width="20">HOLE <?php echo $show_hole_detail['hole_id']?></td>
<td width="5"> PAR <?php echo $show_hole_detail['hole_par'];?></td>
</tr>
<tr>
<td width="20">Yards</td>
<td width="20">S.I</td>
</tr>
<tr>
<td bgcolor="yellow"><?php echo $show_hole_detail['yellow_yards'];?></td>
<td><?php echo $show_hole_detail['hole_si'];?></td>
</tr>
<tr>
<td border="1px" bgcolor="white"><?php echo $show_hole_detail['white_yards'];?></td>
<td><?php echo $show_hole_detail['hole_si'];?></td>
</tr>
<tr>
<td bgcolor="red"><?php echo $show_hole_detail['red_yards'];?></td>
<td><?php echo $show_hole_detail['hole_si'];?></td>
</tr>
</table>
</p>
<form id="game_form" name="game_form" method="post" action="game_form.php">
<table width="300" border="0" align="left" cellpadding="2" cellspacing="0">
<tr>
<td><b>Hole Shots</b></td>
<td><input name="hole_shots" type="text" class="textfield" id="hole_shots" maxlength="2" size="3" ></td>
<td><b>Putts</b></td>
<td><input name="putts" type="text" class="textfield" id="putts" maxlength="2" size="3"></td>
</tr>
<tr>
<td> </td>
<td><input type="submit" name="Submit" value="Next Hole" align="center" /></td>
</tr>
</table>
</form>
</body>
</html>
Or you can use a hidden field that keeps the hole number and you can increment it from php.
$hole_id, in this scenario, will always be 1, because when a user clicks the Submit button, $_POST['Submit'] will always have a value. What you should do instead is have $_POST['Submit'] contain the value of $hole + 1. PHP is not going to "remember" what $hole_id was last time around; it's up to you to remind it. As soon as a request is sent to the browser--unless you're using sessions--PHP forgets everything about that request (HTTP is "stateless").
<?php
if (isset($_POST['Submit'])) {
$hole_id = (int)$_POST['Submit'];
} else {
$hole_id = 1;
}
# other code here
?>
You are on hole #<?php echo $hole_id; ?>.
<form>
<!-- form stuff here -->
<button type="submit" name="Submit" value="<?php echo $hole_id + 1; ?>">Next hole</button>
</form>

Unlocked Forum Post saying it's locked?

All right, sorry for so many posts. Anyway, I have created an entire file of code; view_topic.php, that is just showing a forum post. I know it is messy and not in mysqli, I will be rewriting the ENTIRE code, once I finish this page. Anyway, on to the problem. When you visit any topic, locked or unclicked, it will ALWAYS say, "Sorry, this post is locked." There are no error messages. I have spent all day trying to find the error in my code, and I have turned to the internet for guidance. Here is the whole code, tell me if you need anything else:
<?php
require_once 'core/init.php';
// get value of id that sent from address bar
$id=$_GET['id'];
$sql="SELECT * FROM `forum_question` WHERE id='$id'";
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);
if (!$result) { // add this check.
die('Invalid query: ' . mysql_error());
}
$thisql = "SELECT `locked` FROM `forum_question` WHERE `id`='$id'";
$mythisql = mysql_query($thisql);
$mythisql1 = mysql_fetch_array($mythisql);
if ($mythisql1 === false) { // add this check.
die('Invalid query: ' . mysql_error());
}
?>
<table width="700" align="center" class="outer">
<tr>
<td><table width="100%">
<tr>
<td class="back">Back to Forum Home?</td>
</tr>
<tr>
<td><center><h3>
<?php
echo $rows['topic'];
?>
</h3></center></td>
</tr>
<tr>
<td align="right"><?php
if ($user_data['username'] === $rows['name']) {
?>
<form action="lock.php" method="post">
Lock? <input type="checkbox" name="lock" value="1" />
<input type="hidden" name="id" value="<?php echo $rows['id']; ?>" />
<input type="submit" value="Submit">
</form>
<?php
} ?>
</td>
</tr>
<tr>
<td><?php echo $rows['detail']; ?></td>
</tr>
<tr>
<td class="forumreply">By <?php echo $rows['name']; ?>, On <?php echo $rows['datetime']; ?>
</tr>
</table></td>
</tr>
</table>
<BR>
<?php
$tbl_name2="forum_answer"; // Switch to table "forum_answer"
$sql2="SELECT * FROM $tbl_name2 WHERE question_id='$id'";
$result2=mysql_query($sql2);
while($rows=mysql_fetch_array($result2)){
?>
<table width="700" align="center" class="outer">
<tr>
<td><table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr><tr>
<td><?php echo $rows['a_answer']; ?></td>
</tr>
<td class="forumreply">By <?php echo $rows['a_name']; ?>, On <?php echo $rows['a_datetime']; ?></td>
</tr>
</table></td>
</tr>
</table><br>
<?php
}
$sql3="SELECT view FROM `forum_question` WHERE id='$id'";
$result3=mysql_query($sql3);
$rows=mysql_fetch_array($result3);
$view=$rows['view'];
// if have no counter value set counter = 1
if(empty($view)){
$view=1;
$sql4="INSERT INTO `forum_question`(view) VALUES('$view') WHERE id='$id'";
$result4=mysql_query($sql4);
}
// count more value
$addview=$view+1;
$sql5="update `forum_question` set view='$addview' WHERE id='$id'";
$result5=mysql_query($sql5);
?>
<?php
if (logged_in() === true) {
if ($mythisql1['locked']===0) {
?>
<BR>
<table width="400" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="add_answer.php">
<input type="hidden" value="<?php echo $user_data['username']; ?>" name="a_name">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td valign="top"><strong>Reply</strong></td>
<td valign="top">:</td>
<td><textarea name="a_answer" cols="45" rows="3" id="a_answer"></textarea></td>
</tr>
<tr>
<td> </td>
<td><input name="id" type="hidden" value="<?php echo $id; ?>"></td>
<td><input type="submit" name="submit" value="Submit"> <input type="reset" name="Submit2" value="Reset"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
<?php
} else {
echo "Sorry, this post is locked.";
}
}
ob_end_flush();
?>
If anyone can figure out my problem, I will be eternally grateful. Thanks.
I can not see you data so it's a guess
use onyl ==0 not ===0
if (logged_in() === true) {
if ($mythisql1['locked']==0) {
?>
or if $mythisql1['locked'] is a string
if (logged_in() === true) {
if ($mythisql1['locked']=='0') {
?>
This code has multiple problems. SQL Injection is one. This is a bad case alone. Also, when updating the views counter: do it properly in SQL! update forum_question set view=view+1 WHERE id='".mysql_real_escape_string($id)."'". This would eliminate race conditions... Also, the view column is not string (I hope), so you don't need the single quotes around the value... –

Pass back values to form to populate it? (lots of values)

I need to pass back a large string of results to a form, so that the form can read those results from the URL and then populate the form with them. Problem is, the link ends up being:
&key=value&key=value ... until it can't process anymore (I assume a URL has a length limit?) resulting in my form not being able to fully populate. I need another way to pass values back to my form file.
VIEW.php file (basically just a table of values right as they are from the database, with the first column "id" being a link. When I click on "id", it goes back to my add.php(form page) and populates the form with the data matching that id)
<table border="0" cellpadding="0" cellspacing="0" id="table">
<thead>
<tr>
<th>ID</th>
<th>NAME</th>
<th>MANUFACTURER</th>
<th>MODEL</th>
<th>DESCRIPTION</th>
<th>ON HAND</th>
<th>REORDER</th>
<th>COST</th>
<th>PRICE</th>
<th>SALE</th>
<th>DISCOUNT</th>
<th>DELETED</th>
<th></th>
</tr>
</thead>
<tbody>
<?php } ?>
<?php
// loop to fetch data
while($row = mysql_fetch_array($result)) {
echo "<tr>";
echo "<td>
<a href='molszewski1_a2_add.php'>$row[id]</a></td>";
echo "<td>$row[name]</td>";
echo "<td>$row[manufac]</td>";
echo "<td>$row[model]</td>";
echo "<td>$row[descrip]</td>";
echo "<td>$row[onhand]</td>";
echo "<td>$row[reorder]</td>";
echo "<td>$row[cost]</td>";
echo "<td>$row[price]</td>";
echo "<td>$row[sale]</td>";
echo "<td>$row[discont]</td>";
echo "<td>$row[deleted]</td>";
$status = "$row[deleted]";
echo "<td><a href='molszewski1_a2_delete.php?id=$row[id]&flag=$status&sort=$sort'>";
$status = "$row[deleted]";
if ($status == 'n') {
$flag = "restore";
echo "delete";
} else if ( $status == 'y') {
$flag = "delete";
echo "restore";
}
echo "</a></td>";
echo "</tr>";
} ?>
<?php { ?>
</tbody>
</table>
ADD.php (form page where the form is supposed to fetch the data and populate it)
<?php
// If no form has been submitted, present form
if (empty($_GET))
{
add_form();
}
// if a form has been submitted
else
{
// if form_validity() == 1, proceed to connect
if (form_validity() == 1)
{
// connect to mysql + database
connect();
$saleItem = "n";
$discountItem = "n";
if( array_key_exists( 'saleItem', $_GET ) && $_GET['saleItem'] == 'y' )
{ $saleItem = "y"; }
if( array_key_exists( 'discountItem', $_GET ) && $_GET['discountItem'] == 'y' )
{ $discountItem = "y"; }
// get values from form, insert into database
$sql=("INSERT INTO inventory (name,
manufac,
model,
descrip,
onhand,
reorder,
cost,
price,
sale,
discont,
deleted)
VALUES ('$_GET[itemName]',
'$_GET[manufacturer]',
'$_GET[model]',
'$_GET[description]',
'$_GET[numberOnHand]',
'$_GET[reorderLevel]',
'$_GET[cost]',
'$_GET[sellingPrice]',
'$saleItem',
'$discountItem', 'n')");
// if the query doesn't work, display error message
if (!(mysql_query($sql))) { die ("could not query: " . mysql_error()); }
add_form();
// redirect to view.php after form submission
// use php instead
echo "<meta http-equiv='REFRESH' content='0;url=molszewski1_a2_view.php'>";
}
else
{
// if form is not valid (form_validity returns 0), display error messages
add_form();
}
}
?>
FUNCTIONS.php (all my functions for stuff like the form)
<?php function page_navigation(){ ?>
<div class="center">
<input type="button" value="ADD" />
<input type="button" value="VIEW" />
<input type="button" value="VIEW DELETED" />
<input type="button" value="VIEW ACTIVE" />
<br />
<br />
</div>
<?php } ?>
<?php function add_form() { ?>
<form action="molszewski1_a2_add.php" method="get" id="form">
<table width="529px">
<tr>
<td>ITEM NAME</td>
<td><input name="itemName" size="30" type="text" value="<?php echo $_GET["itemName"] ?>"/></td>
</tr>
<tr>
<td>MANUFACTURER</td>
<td><input name="manufacturer" size="30" type="text" value="<?php echo $_GET["manufacturer"] ?>"/></td>
</tr>
<tr>
<td>MODEL</td>
<td><input name="model" size="30" type="text" value="<?php echo $_GET["model"] ?>"/></td>
</tr>
<tr>
<td>DESCRIPTION</td>
<td><textarea name="description" rows="3" cols="20"><?php echo $_GET["description"] ?></textarea></td>
</tr>
<tr>
<td>ON HAND</td>
<td><input name="numberOnHand" size="30" type="text" value="<?php echo $_GET["numberOnHand"] ?>"/></td>
</tr>
<tr>
<td>REORDER LEVEL</td>
<td><input name="reorderLevel" size="30" type="text" value="<?php echo $_GET["reorderLevel"] ?>"/></td>
</tr>
<tr>
<td>COST</td>
<td><input name="cost" size="30" type="text" value="<?php echo $_GET["cost"] ?>"/></td>
</tr>
<tr>
<td>SELLING PRICE</td>
<td><input name="sellingPrice" size="30" type="text" value="<?php echo $_GET["sellingPrice"] ?>"/></td>
</tr>
<tr>
<td>SALE ITEM</td>
<td>
<input type="checkbox" name="saleItem" value="y" <?php if( isset( $_GET['saleItem'] ) ){ ?> checked="checked" <?php } ?> />
</td>
</tr>
<tr>
<td>DISCOUNTED ITEM</td>
<td>
<input type="checkbox" name="discountItem" value="y" <?php if( isset( $_GET['discountItem'] ) ){ ?> checked="checked" <?php } ?> />
</td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="save" name="submit" id="submit" /></td>
</tr>
</table>
</form>
<?php } ?>
Use method="post" and $_POST (instead of $_GET).
POST requests can be much larger than GET requests as GET requests are limited by the maximum length of a URL. POST requests are limited by the size of the max_post_size ini-value which is usually a few megabytes.

using radio buttons in a html table?

Rather noobish question but I have tried searching and just cannot find a solution. My problem is I have a table called Off, which stores all of the staffs holidays. However before a staff member may have that day off it has to be authorised. I have a query which gets all of the unauthorised holidays and I display them in a html table. The problem is that I need 2 radio buttons per record. one for authorise and one for deny. The radio buttons are displayed but when going through the records only one of the radio buttons is selectable. Is it possible to use radio buttons in this way?
<?php
$path = $_SERVER['DOCUMENT_ROOT'];
$path .= "/Apollo/dbc.php";
include_once($path);
$rs_results = mysql_query("SELECT * FROM off WHERE IsItAuthorised='0' and isitsick='0' ORDER BY DayOff");
?>
<html>
<head>
<title>Administration Main Page</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<?php
$limit = count($OffID);
if (isset($_POST['submit'])) {
//Assign each array to a variable
$id = $_POST['OffID'];
$answer = $_POST['radio'];
$limit = count($OffID);
$values = array(); // initialize an empty array to hold the values
for($k=0;$k<$limit;$k++){
$msg[] = "$limit New KPI's Added";
$query = "UPDATE Off SET IsItAuthorised = '{$answer[$k]}' WHERE OffID = '{$OffID[$k]}'";
}
$Event = "INSERT INTO events (UserName, Event ) VALUES ('$_SESSION[user_name]', 'Entered New KPI' )";
if (!mysql_query($query,$link)){
die('Error: ' . mysql_error());
} else {
mysql_query($Event);
echo "<div class=\"msg\">" . $msg[0] . "</div>";
}
}
?>
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="14%" valign="top"><?php
?>
</td>
<td width="74%" valign="top" style="padding: 10px;">
<p><?php
if(!empty($msg)) {
echo $msg[0];
}
?></p>
<p>
<?php
$cond = '';
$sql = "select * from off ";
$rs_total = mysql_query($sql) or die(mysql_error());
$total = mysql_num_rows($rs_total);
?>
<p>
<form name "searchform" action="/Apollo/Admin/HolidayRequests" method="post">
<table width="100%" border="0" align="center" cellpadding="2" cellspacing="0">
<tr class="mytables">
<td width="4%"><font color="white"><strong>ID</font></strong></td>
<td width="4%"> <font color="white"><strong>Staff Member</font></strong></td>
<td width="10%"><font color="white"><strong>Day Off</font></strong></div></td>
<td width="10%"><font color="white"><strong>Is It Authorized</font></strong></div></td>
<td width="15%"> </td>
</tr>
<tr>
<td> </td>
<td width="10%"> </td>
<td width="17%"><div align="center"></div></td>
<td> </td>
</tr>
<?php while ($rrows = mysql_fetch_array($rs_results)) {?>
<tr>
<td><input type="" name="id[]" id="id[]" size="4" value="<?php echo $rrows['OffID'];?>" /></td>
<td><?php echo $rrows['StaffMember']; ?></td>
<td><?php echo date('d/m/Y', strtotime($rrows['DayOff']));?></div></td>
<td> <span id="approve<?php echo $rrows['id']; ?>">
<?php if(!$rrows['IsItAuthorised']) { echo "Pending"; } else {echo "Authorized"; }?>
</span> </td>
<td>
<input type="radio" name="radio[0]" id="radio[0]" value="1" />Approve
<input type="radio" name="radio[1]" id="radio[1]" value="0" />Deny
</td>
</tr>
<?php } ?>
</table>
<input name="submit" type="submit" id="submit" value="Submit">
</form>
</p>
<?php
?>
<p> </p>
<p> </p>
<p> </p>
<p> </p></td>
<td width="12%"> </td>
</tr>
</table>
</body>
</html>
Your problem is to do with your use of the "name" attribute - this attribute is used in a special way on radio buttons.
When you click on a radio button, all the other radio buttons with the same name are deselected - in your case, you will have half of the radio buttons on the page in one group and half in another, which would probably explain why you can only select one. I'd imagine you can actually select two at the same time, if you click on the right radio buttons.
To fix this you'd need to have some kind of count for the while loop, ie:
$resultNumber = 0;
while ($rrows = mysql_fetch_array($rs_results)) {
Then you'd need to use this number in the name (and also id) of the radio buttons -
<input type="radio" name="radio<?php echo $resultNumber; ?>" id="radio<?php echo $resultNumber; ?>" value="1" />
Then simply increment the $resultNumber at the end of each iteration -
<?php
$resultNumber++;
}
?>
Alternatively, you could use the primary key of the row from the database table you're querying to distinguish groups, but not knowing the table structure I couldn't give sample code for that.
Further reading on radio buttons (also a source for the name attribute problem) :
http://www.echoecho.com/htmlforms10.htm
Instead of radio buttons, I used checkboxes, which I looped through. Each checkbox set a value to a different column. Should have been obvious to me to begin with.

unable to get the value of the text field with the help of respective checkboxes. please help

I've a doubt. I've 3 textboxes and each is having checkboxes next to it. I want to display
the values of only those textboxes whose respective checkboxes are clicked. Following is the attached HTML and PHP codes:
<html>
<head>
</head>
<body>
<form name="f" method="post" action="4.php">
<table>
<tr>
<th> Facility </th>
</tr>
<tr>
<td><input type="text" name="a1" value="a"></td><td><input type="checkbox" id="facility[]" name="facility[]" value="Hostel"></td>
</tr>
<tr>
<td><input type="text" name="b1" value="b"></td><td><input type="checkbox" id="facility[]" name="facility[]" value="Transport"></td>
</tr>
<tr>
<td><input type="text" name="c1" value="c"></td><td><input type="checkbox" id="facility[]" name="facility[]" value="Food"></td>
</tr>
<tr>
<td colspan="3"><input type="submit" value="submit" /></td>
</tr>
</table>
</form>
</body>
</html>
and below is the PHP part.
<?php
$a=$_POST['a1'];
$b=$_POST['b1'];
$c=$_POST['c1'];
$facilityArray = $_POST['facility'];
$facility = "";
if(count($facilityArray) > 0)
{
foreach($facilityArray as $fac)
{
$facility .= " " . $fac;
}
}
echo $facility; echo "<br>";
echo $a; echo "<br>";
echo $b; echo "<br>";
echo $c;
?>
With the help of following codes I am able to display all the values of checked checkboxes. I am also able to display the values of all the textboxes. But I actually want to display the values of only those textboxes whose respective checkboxes are clicked. I know it may be a very basic question but please help me grow in PHP. Thanks in advance... :(
Your textboxes should also be in an array post to achieve this.
To achieve this change the input lines as:
<td><input type="text" name="textboxes[]" value="a"></td><td><input type="checkbox" id="facility[]" name="facility[]"></td>
From php you'll be getting the posted textboxes in an array as:
$textbox=$_POST['textboxes'];
You should then loop through the checkboxes array and if the corresponding checkbox is "on" (clicked), then display the textboxes value. To do this you would also need a counter to make sure you are on the same array index for both checkboxes and textboxes:
if(count($facilityArray) > 0)
{
$i = 0;
foreach($facilityArray as $fac)
{
if($fac == "on")
{
echo $textbox[$i] . "</br>";
}
$i ++;
}
}
I've also added a name to your submit button so you only check the form when it is submitted.
Your page should now look something like this:
<?php
if(isset($_POST['submit']))
{
$textbox=$_POST['textboxes'];
$facilityArray = $_POST['facility'];
if(count($facilityArray) > 0)
{
$i = 0;
foreach($facilityArray as $fac)
{
if($fac == "on")
{
echo $textbox[$i] . "</br>";
}
$i ++;
}
}
}
?>
<form name="f" method="post" action="4.php">
<table>
<tr>
<th> Facility </th>
</tr>
<tr>
<td><input type="text" name="textboxes[]" value="a"></td><td><input type="checkbox" id="facility[]" name="facility[]"></td>
</tr>
<tr>
<td><input type="text" name="textboxes[]" value="b"></td><td><input type="checkbox" id="facility[]" name="facility[]"></td>
</tr>
<tr>
<td><input type="text" name="textboxes[]" value="c"></td><td><input type="checkbox" id="facility[]" name="facility[]"></td>
</tr>
<tr>
<td colspan="3"><input name="submit" type="submit" value="submit" /></td>
</tr>
</table>
</form>
UPDATE:
To make sure that the $_POST variable exists before assigning it to a variable we use the isset(). In your case just update the php segment as:
<?php
if(isset($_POST['submit']))
{
if(isset($_POST['textboxes']))
{
$textbox=$_POST['textboxes'];
if(isset($_POST['facility']))
{
$facilityArray = $_POST['facility'];
if(count($facilityArray) > 0)
{
$i = 0;
foreach($facilityArray as $fac)
{
if($fac == "on")
{
echo $textbox[$i] . "</br>";
}
$i ++;
}
}
}
}
}
?>
Where the only changes are the addition of another two if statements that take a boolean flag from the isset() function according to whether the $_POST variable has been posted successfully
if(isset($_POST['textboxes']))
AND
if(isset($_POST['facility']))

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