checkbox: Why can't I get the checkbox values? Why does it returns NULL?

vendredi 21 juillet 2017

Why can't I get the checkbox values? Why does it returns NULL?

<?php

echo date('y:n:d h:i:s');
mysql_connect("localhost","root","") or die(mysql_error());
mysql_select_db("form") or die(mysql_error());
//$_SERVER['REQUEST_METHOD']=='POST'
if(isset($_POST['submit_true']))
{
    //Variables declaration
    $first_name=mysql_real_escape_string($_POST['first_name']); 
    $last_name=mysql_real_escape_string($_POST['last_name']);   
    $email=mysql_real_escape_string($_POST['email']);   
    $gender=mysql_real_escape_string($_POST['gender']);
    $language=mysql_real_escape_string($_POST['language']);
    $subjects=$_POST['subjects'];
    var_dump($_POST['subjects']);
    $subject=$temprary="";      
    foreach($subjects as $temprary)
    {
        $subject="".$temprary.",";
    }
    $image=$_FILES['file']['name'];
    $mobile=mysql_real_escape_string($_POST['mobile']);
    $password=md5(mysql_real_escape_string($_POST['password']));
    $confirm_password=md5(mysql_real_escape_string($_POST['mobile']));
    //Variables declaration End

    //Database Input
    $email_check=mysql_query("SELECT * FROM user WHERE 'email==$email'");
    if(mysql_num_rows($email_check)>0)
    {
        echo "<script>alert('Email already exist!')</script>";
    }
    else if($password==$confirm_password)
    {
        echo "<script>alert('Password does not match!')</script>";      
    }
    else
    {
        mysql_query("INSERT INTO `user`(`first_name`, `last_name`, `email`, `gender`, `language`, `subject`, `image`, `mobile`, `password`) VALUES ('$first_name','$last_name','$email','$gender','$language','$subject','$image','$mobile','$password'");

        $server_file=$_FILES['file']['tmp_name'];
        $basename=basename($_FILES['file']['name']);
        $destination_file="uploads/".$basename;
        move_uploaded_file($server_file,$destination_file);
    }
    //Database Input End
}
else
{
    echo "All good!";
}
?>

This is the PHP! The var_dump function returns NULL for $_POST['subjects'] instead of array of the inputs. Please focus only on elements related to the checkbox in the HTML as well as the PHP.

<html>

<head>
  <title>Form!</title>
</head>

<body>
  <form method="post" action="" enctype="multipart/form-data">
    First Name:&nbsp<input type="text" name="first_name"><br/><br/> Last Name:&nbsp<input type="text" name="last_name"><br/><br/> Email:&nbsp
    <input type="email" name="email"><br/><br/> Gender:&nbsp &nbsp &nbsp Male
    <input type="radio" name="gender" value="Male"> Female
    <input type="radio" name="gender" value="Female">
    <br/><br/> Subject:&nbsp English&nbsp
    <input type="checkbox" name="subjects[]" value="eng"> Physics&nbsp
    <input type="checkbox" name="subjects[]" value="phy"> Computer&nbsp
    <input type="checkbox" name="subjects[]" value="com"> Mathematics&nbsp
    <input type="checkbox" name="subjects[]" value="mat">
    <br/><br/> language:&nbsp
    <select name="language">
                                        <option value="eng">English</option>
                                        <option value="hin">Hindi</option>
                                        <option value="spa">Spanish</option>
                                </select>
    <br/><br/> Upload Image:&nbsp<input type="file" name="file"><br/><br/> Mobile:&nbsp
    <input type="text" name="mobile"><br/><br/> Password:&nbsp
    <input type="password" name="password"><br/><br/> Confirm Password:&nbsp<input type="password" name="confirm_password"><br/><br/>
    <input type="submit" name="submit_true"><br/><br/>

  </form>
</body>

</html>

Help me understand why a valid input is not being returned? Please help me check for any kind of mistake if it is. Let me know the reason this is not working please.

checkbox

vendredi 21 juillet 2017

Why can't I get the checkbox values? Why does it returns NULL?

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