end web developer, i was given a CMS done from another team and i have to link with my front-end. I have made some modifications, but due to my lack of php knowledge i have some issue here.
My users are able to fill up a form, where 1 text field is asking for their photo link. I want to check for if the value entered is not equal to what i want, then i will query insert a default avatar photo link to mysql to process.
code that i tried on php
// check if the variable $photo is empty, if it is, insert the default image link
if($photo = ""){
$photo="images/avatarDefault.png";
}
doesn't seem to work
<?php
if($_SERVER["REQUEST_METHOD"] === "POST")
{
//Used to establish connection with the database
include 'dbAuthen.php';
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
else
{
//Used to Validate User input
$valid = true;
//Getting Data from the POST
$username = sanitizeInput($_POST['username']);
$displayname = sanitizeInput($_POST['displayname']);
$password = sanitizeInput($_POST['password']);
//hash the password using Bcrypt - this is to prevent
//incompatibility from using PASSWORD_DEFAULT when the default PHP hashing algorithm is changed from bcrypt
$hashed_password = password_hash($password, PASSWORD_BCRYPT);
//Determining Type of the User
//if B - User is student
//if A - User is adin
if($_POST['type'] == 'true')
$type = 'B';
else
$type = 'A';
$email = sanitizeInput($_POST['email']);
$tutorGroup = sanitizeInput($_POST['tutorGroup']);
$courseID = sanitizeInput($_POST['courseID']);
$description = sanitizeInput($_POST['desc']);
$courseYear = date("Y");
$website = sanitizeInput($_POST['website']);
$skillSets = sanitizeInput($_POST['skillSets']);
$specialisation = sanitizeInput($_POST['specialisation']);
$photo = sanitizeInput($_POST['photo']);
// this is what i tried, checking if the value entered is empty, but doesn't work
if($photo = ""){
$photo="images/avatarDefault.png";
}
$resume = sanitizeInput($_POST['resume']);
//Validation for Username
$sql = "SELECT * FROM Users WHERE UserID= '$username'";
if (mysqli_num_rows(mysqli_query($con,$sql)) > 0){
echo 'User already exists! Please Change the Username!<br>';
$valid = false;
}
if($valid){
//Incomplete SQL Query
$sql = "INSERT INTO Users
VALUES ('$username','$displayname','$hashed_password','$type','$email', '$tutorGroup', ";
//Conditionally Concatenate Values
if(empty($courseID))
{
$sql = $sql . "NULL";
}
else
{
$sql = $sql . " '$courseID' ";
}
//Completed SQL Query
$sql = $sql . ", '$description', '$skillSets', '$specialisation', '$website', '$courseYear', '$photo', '$resume', DEFAULT)";
//retval from the SQL Query
if (!mysqli_query($con,$sql))
{
echo '*Error*: '. mysqli_error($con);
}
else
{
echo "*Success*: User Added!";
}
}
//if student create folder for them
if ($type == 'B')
{
//Store current reporting error
$oldErrorReporting = error_reporting();
//Remove E_WARNING from current error reporting level to prevent users from seeing code
error_reporting($oldErrorReporting ^ E_WARNING);
//Set current reporting error();
error_reporting($oldErrorReporting);
}
mysqli_close($con);
}
}
function sanitizeInput($data)
{
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
?>
i've tried finding a way on mysql to insert default values but it seem impossible, so i have no choice but to query insert through php.
I have the logic but i'm not sure how to implement on the php with my lack of knowledge, i was thinking of checking either
1) if the photo link does not have the word .png/.jpg, $photo != ".png"
2) if the photo link length is too low $.photo.length < 10
can someone help me look into the code and tell me what i'm doing wrong? Thanks!