PHP and Checkbox

thanx my frd for replying me and to support me. But my problem is still not solved. I have given my two files here. You plz run this script and remove my error. The problem is that if the user selects all the three checkboxes then when form is returned back to itself then all the three checkboxes are selected but when user doesn't select all three checkboxes then they are not selected. Here are my files -

formdesg.php file -

<html>

<head>

<title>PHP Form Validation</title>

</head>

<?php

$msg=isset($_REQUEST["msg"])?$_REQUEST["msg"]:"";

$uname=isset($_REQUEST["uname"])?$_REQUEST["uname"]:"";

$fname=isset($_REQUEST["fname"])?$_REQUEST["fname"]:"";

$lname=isset($_REQUEST["lname"])?$_REQUEST["fname"]:"";

$gender=isset($_REQUEST["gender"])?$_REQUEST["gender"]:"";

$hobbies=$_REQUEST["hobbies"]?explode(", ",$_REQUEST["hobbies"]):"";

$day=isset($_REQUEST["day"])?$_REQUEST["day"]:"";

$month=isset($_REQUEST["month"])?$_REQUEST["month"]:"";

$year=isset($_REQUEST["year"])?$_REQUEST["year"]:"";

$qual=isset($_REQUEST["qual"])?$_REQUEST["qual"]:"";

$mobileno=isset($_REQUEST["mobileno"])?$_REQUEST["mobileno"]:"";

$email=isset($_REQUEST["email"])?$_REQUEST["email"]:"";

$address=isset($_REQUEST["address"])?$_REQUEST["address"]:"";

echo "<div style='color:red'>$msg</div>";

?>

<body>

<form name="form1" method="post" action="FormCheck.php">

<input type="hidden" name="mode" value="validate">

<table style="position:absolute; left:350px; top:10px" width="50%" border="0" align="center">

<tr>

<th><div align="right">Username:</div></th>

<td><input type="text" name="txtuname" size="30" value="<?=$uname?>"></td>

</tr>

<tr>

<th><div align="right">Password:</div></th>

<td><input type="password" name="txtpass" size="30"></td>

</tr>

<tr>

<th><div align="right">Re-password:</div></th>

<td><input type="password" name="txtrpass" size="30"></td>

</tr>

<tr>

<th><div align="right">Firstname:</div></th>

<td><input type="text" name="txtfname" size="30" value="<?=$fname?>"></td>

</tr>

<tr>

<th><div align="right">Lastname:</div></th>

<td><input type="text" name="txtlname" size="30" value="<?=$lname?>"></td>

</tr>

<tr>

<th><div align="right">Gender:</div></th>

<td><label for="male"><input name="gender" id="male" type="radio" value="Male" <?php if($gender=="Male") echo "checked" ?>>Male</label><br>

<label for="female"><input name="gender" id="female" type="radio" value="Female" <?php if($gender=="Female") echo "checked" ?>>Female</td>

</tr>

<tr>

<th><div align="right">Hobbies:</div></th>

<td>

<label for="reading"><input type="checkbox" id="reading" name="hobbies[]" value="Reading" <?php if($hobbies[0]=="Reading") echo "checked" ?>>Reading</label>

<br>

<label for="writing"><input type="checkbox" id="writing" name="hobbies[]" value="Writing" <?php if($hobbies[1]=="Writing") echo "checked" ?>>Writing</label>

<br>

<label for="playing"><input type="checkbox" id="playing" name="hobbies[]" value="Playing" <?php if($hobbies[2]=="Playing") echo "checked" ?>>Playing</label>

</td>

</tr>

<tr>

<th><div align="right">DOB:</div></th>

<td><select name="cmbday">

<option value="DD">DD</option>

<?php

for($i=1;$i<=31;$i++)

{

    $selected="";

    if($day==$i)

    {

        $selected="selected='selected'";

    }

    echo "<option value='$i' $selected >$i</option>";

}

?>

</select>

<select name="cmbmonth">

<option value="MM">MM</option>

<?php

for($i=1;$i<=12;$i++)

{

    $selected="";

    if($month==$i)

    {

        $selected="selected='selected'";

    }

    echo "<option value='$i' $selected >$i</option>";

}

?>

</select>

<select name="cmbyear">

<option value="YY">YY</option>

<?php

for($i=2000;$i>=1950;$i--)

{

    $selected="";

    if($year==$i)

    {

        $selected="selected='selected'";

    }

    echo "<option value='$i' $selected>$i</option>";

}

?>

</select></td>

</tr>

<tr>

<th><div align="right">Qualification:</div></th>

<td><select name="cmbqual" style="width:150px">

<option value="null">Select your degree...</option>

<optgroup label="Arts">

<option value="BA" <?php if($qual=="BA") echo "selected"?>>BA</option>

<option value="MA" <?php if($qual=="MA") echo "selected"?>>MA</option>

</optgroup>

<optgroup label="Science">

<option value="BSc" <?php if($qual=="BSc") echo "selected"?>>BSc</option>

<option value="MSc" <?php if($qual=="MSc") echo "selected"?>>MSc</option>

</optgroup>

<optgroup label="Computer">

<option value="BCA" <?php if($qual=="BCA") echo "selected"?>>BCA</option>

<option value="MCA" <?php if($qual=="MCA") echo "selected"?>>MCA</option>

</optgroup>

<optgroup label="Engineering">

<option value="BTech" <?php if($qual=="BTech") echo "selected"?>>BTech</option>

<option value="MTech" <?php if($qual=="MTech") echo "selected"?>>MTech</option>

</optgroup>

</select></td>

</tr>

<tr>

<th><div align="right">Address:</div></th>

<td><textarea name="taaddress" cols="25" rows="10"><?=$address?></textarea></td>

</tr>

<tr>

<th><div align="right">Mobile No: </div></th>

<td><input type="text" name="txtmobile" size="30" value="<?=$mobileno?>"></td>

</tr>

<tr>

<th><div align="right">Email ID: </div></th>

<td><input type="text" name="txtemail" size="30" value="<?=$email?>"></td>

</tr>

<tr>

<th><div align="right">

<input type="submit" name="btnsubmit" value="Submit">

</div></th>

<td><input type="reset" value="Clear"></td>

</tr>

</table>

</form>

</body>

</html>

formcode.php file -

<?php

$uname=$_REQUEST["txtuname"];

$password=$_REQUEST["txtpass"];

$rpassword=$_REQUEST["txtrpass"];

$fname=trim($_REQUEST["txtfname"]);

$lname=trim($_REQUEST["txtlname"]);

$gender=$_REQUEST["gender"];

$hobbies=implode(", ",$_REQUEST["hobbies"]);

$day=$_REQUEST["cmbday"];

$month=$_REQUEST["cmbmonth"];

$year=$_REQUEST["cmbyear"];

$qual=$_REQUEST["cmbqual"];

$address=$_REQUEST["taaddress"];

$mobileno=$_REQUEST["txtmobile"];

$email=$_REQUEST["txtemail"];

$msg="";

$formStatus="OK";

if(strlen($uname)<10)

{

    $formStatus="notOK";

    $msg.="Username must be at least 10 characters long.<br>";

}

if(!ctype_alnum($uname))

{

    $formStatus="notOK";

    $msg.="Username must be in alphanumeric characters.<br>";

}

if(strlen($password)<1)

{

    $formStatus="notOK";

    $msg.="Password can not be left blank.<br>";

}

if($password!=$rpassword)

{

    $formStatus="notOK";

    $msg.="Password does not match.<br>";

}

if(strlen($fname)<1||strlen($lname)<1)

{

    $formStatus="notOK";

    $msg.="Name can not be left blank.<br>";

}

if(!ctype_alpha($fname)||!ctype_alpha($lname))

{

    $formStatus="notOK";

    $msg.="Name must be in alphabets.<br>";

}

if(strlen($gender)<1)

{

    $formStatus="notOK";

    $msg.="Please select your gender.<br>";

}

if(strlen($hobbies)<1)

{

    $formStatus="notOK";

    $msg.="Please select your hobby.<br>";

}

if($day=="DD"||$month=="MM"||$year=="YY")

{

    $formStatus="notOK";

    $msg.="Please select your DOB.<br>";

}

if(!checkdate($month,$day,$year))

{

    $formStatus="notOK";

    $msg.="DOB is not valid.<br>";

}

if($qual=="null")

{

    $formStatus="notOK";

    $msg.="Please select your qualification.<br>";

}

if(strlen($address)<1)

{

    $formStatus="notOK";

    $msg.="Please enter your address.<br>";

}

if(strlen($mobileno)!=10||!(is_numeric($mobileno)))

{

    $formStatus="notOK";

    $msg.="Please enter valid mobile number.<br>";

}

if(!preg_match("/^[a-z0-9_]+@[a-z0-9]+\.[a-z]{2,3}$/",$email))

{

    $formStatus="notOK";

    $msg.="Please enter valid email ID.<br>";

}

if($formStatus=="OK")

{

    echo "Username is $uname";

    echo "<br>Password is $password";

    echo "<br>Repeat-password is $rpassword";

    echo "<br>Name is $fname $lname";

    echo "<br>Gender is $gender";

    $hobbies=implode(", ",$_REQUEST["hobbies"]);

    echo "<br>DOB is $day/$month/$year";

    echo "<br>Qualification is $qual";

    echo "<br>Address is ".nl2br($address);

    echo "<br>Mobile no. is $mobileno";

    echo "<br>Email ID is $email";

}

else

{

header("location:FormDesg.php?msg=$msg&uname=$uname&fname=$fname&lname=$lname&gender=$gender&hobbies=$hobbies&qual=$qual&day=$day&month=$month&year=$year&address=$address&mobileno=$mobileno&email=$email");

}

?>

This script is actually a form validation script on server side. When form doesn't pass validation rule then it is returned back to design file.

Plz remove the problem regarding checkboxes.

This is because if Reading isn't selected, but Writing is, the variable $hobbies[0] = "Written" not $hobbies[1] = "Written"
Use

<?php if(in_array("Reading", $hobbies)) echo "checked" ?>

Insted

---------- Post added at 06:21 AM ---------- Previous post was at 06:19 AM ----------

Or you could use


<label for="reading"><input type="checkbox" id="reading" name="hobbies[0]" value="Reading" <?php if($hobbies[0]=="Reading") echo "checked" ?>>Reading</label>

<br>

<label for="writing"><input type="checkbox" id="writing" name="hobbies[1]" value="Writing" <?php if($hobbies[1]=="Writing") echo "checked" ?>>Writing</label>

<br>

<label for="playing"><input type="checkbox" id="playing" name="hobbies[2]" value="Playing" <?php if($hobbies[2]=="Playing") echo "checked" ?>>Playing</label>

But I think the in_array option is the best