I get 0 value each time I insert (int)$_GET['id']; in database

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I have a problem which is when I try to insert the value of the Get['id'], I always get a 0 even tho when I print the id! I can see it. Upload.php: Hello there, I have a problem which is when I try to insert the value of the Get['id'], I always get a 0 even tho when I print the id! I can see it. Upload.php:

    <?php
    include '../include/connect.php';
    $id =(int)$_GET['id'];
    ?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>

<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="file" name="file_img" />
<input type="submit" name="btn_upload" value="Upload">
</form>

<?php
if(isset($_POST['btn_upload']))
{
    $filetmp = $_FILES["file_img"]["tmp_name"];
    $filename = $_FILES["file_img"]["name"];
    $filetype = $_FILES["file_img"]["type"];
    $filepath = "photo/".$filename;

    move_uploaded_file($filetmp,$filepath);
    $sql = "INSERT INTO upload_img (img_name,img_path,img_type,im_id) VALUES ('$filename','$filepath','$filetype','.$id.')";
    mysqli_query($con, $sql);
}
?>

</body>
</html>

and my sql:

A photo of the database

I tried using this link :

upload.php?id=2

When you post to upload.php you are loosing the GET parameters. After that you cast the $_GET['id'](empty string) to (int) and php sets it to 0.

<form action="upload.php?id=<?php echo $id ?>" method="post" enctype="multipart/form-data">

or

<form action="" method="post" enctype="multipart/form-data">

or create a hidden input field in the form and access it via $_POST['id']

<input type="hidden" name="id" value="<?php echo $id; ?>" />

PHP: cant insert a value of 0 (zero), additional info: the data type of [score] field is int die(json_encode($response)); } $query = "INSERT INTO tb_quiz (quiz_list_id, stud_name, score, equivalent, term, All variations of 0 - both 0 as integer and "0" as string are considered empty . You have used empty() to check $_POST['score'] and its definition is -. When using $_GET, please consider the security implications of this, as an attacker can post whatever they want, which gets included into your code, unless you are careful and sanitize it and check for VALID values, don't just use whatever is returned.

You are trying to insert a string instead of an int value. You have to remove the quotation marks for the $id like:

    move_uploaded_file($filetmp,$filepath);
    $sql = "INSERT INTO upload_img (img_name,img_path,img_type,im_id) VALUES ('$filename','$filepath','$filetype',$id)";
    mysqli_query($con, $sql);

Floating point numbers - Manual, Formally as of PHP 7.4.0 (previously, underscores have not been allowed): Because NAN represents any number of different values, NAN should not be compared to arguments are discarded without notice, but the function doBar(a) would get 0 as parameter. This function only changes datatypes (string to int) once. Sub AddEvenNumbers() Dim Total As Integer Dim Count As Integer Total = 0 For Count = 2 To 10 Step 2 Total = Total + Count Next Count MsgBox Total End Sub. Note that we started the Count value from 2 and also used ‘Step 2‘. When you use ‘Step 2’, it tells the code to increment the ‘Count’ value by 2 every time the loop is run.

use the following code, you have to pass the id in form while submitting.

<?php
include '../include/connect.php';
$id =(int)$_GET['id'];
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>Untitled Document</title>
    </head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
    <input type="file" name="file_img" />
    <input type="hidden" name="id" value="<?php echo $id;?>" />
    <input type="submit" name="btn_upload" value="Upload">
</form>    
<?php
if(isset($_POST['btn_upload']))
{
    $filetmp = $_FILES["file_img"]["tmp_name"];
    $filename = $_FILES["file_img"]["name"];
    $filetype = $_FILES["file_img"]["type"];
    $filepath = "photo/".$filename;
    $id = $_POST['id'];

    move_uploaded_file($filetmp,$filepath);
    $sql = "INSERT INTO upload_img (img_name,img_path,img_type,im_id) VALUES ('$filename','$filepath','$filetype','.$id.')";
    mysqli_query($con, $sql);
}
?>
</body>
</html>

Integers - Manual, 64-bit platforms usually have a maximum value of about 9E18, except on Windows Note: As of PHP 7.0.0, the function intdiv() is available for integer division. Do not rely on any observed behaviour, as it can change without notice. 2. there is no unsighed int in PHP, if you use 32 bit version,the code above will get� Return Values. The integer value of var on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1. The maximum value depends on the system. 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647. So for e

Java Arrays, Inserting Elements Into an Array; Removing Elements From an Array If this had been an array of int (primitive values), it could have looked like this: In this case , i takes the values 0 through 9, each time repeating the Sometimes you may need to find the minimum or maximum value in a Java array. Returning values. Values are returned by using the optional return statement. Any type may be returned, including arrays and objects. This causes the function to end its execution immediately and pass control back to the line from which it was called.

MySQL INT Data Type Explained By Examples, Summary: in this tutorial, you will learn about MySQL INT or integer data type and the characteristics of each integer type including storage in bytes, minimum value, In addition, the INT column can have an AUTO_INCREMENT attribute. When you insert a NULL value or 0 into the INT AUTO_INCREMENT column, the � PHP script for SELECT OPTION FIELD: HTML select tag allows user to choose one or more options from the given drop down list. Below example contains PHP script to get a single or multiple selected values from given HTML select tag.

9. Lists — How to Think Like a Computer Scientist: Learning with , Like numeric 0 values and the empty string, the empty list is false in a boolean If you try to read or write an element that does not exist, you get a runtime error: Each time through the loop, the variable i is used as an index into the list,� "The size of an integer is platform-dependent, although a maximum value of about two billion is the usual value (that's 32 bits signed). PHP does not support unsigned integers. Integer size can be determined from PHP_INT_SIZE, maximum value from PHP_INT_MAX since PHP 4.4.0 and PHP 5.0.5."

Comments
  • Note that your code is open to SQL injections
  • MySQL can cast a string to an int.