What is the purpose of the PHP script described in the forum thread and what potential issue is the user facing?

The user is facing an issue where the PHP script they are using to upload images to their website is not working properly. The purpose of the PHP script is to handle the image upload process, including checking file types, file sizes, and moving the uploaded file to a specific directory on the server. One potential issue the user may be facing is that the script is not properly handling file uploads due to incorrect file permissions or server configurations. 

<?php
// Check if the form was submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $targetDir = "uploads/";
    $targetFile = $targetDir . basename($_FILES["file"]["name"]);
    $uploadOk = 1;
    $imageFileType = strtolower(pathinfo($targetFile,PATHINFO_EXTENSION));

    // Check if file is an actual image
    $check = getimagesize($_FILES["file"]["tmp_name"]);
    if($check !== false) {
        echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
        echo "File is not an image.";
        $uploadOk = 0;
    }

    // Check file size
    if ($_FILES["file"]["size"] > 500000) {
        echo "Sorry, your file is too large.";
        $uploadOk = 0;
    }

    // Allow certain file formats
    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
    && $imageFileType != "gif" ) {
        echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
        $uploadOk = 0;
    }

    // Check if $uploadOk is set to 0 by an error
    if ($uploadOk == 0) {
        echo "Sorry, your file was not uploaded.";
    } else {
        if (move_uploaded_file($_FILES["file"]["tmp_name"], $targetFile)) {
            echo "The file ". basename( $_FILES["file"]["name"]). " has been uploaded.";
        } else {
            echo "Sorry, there was an error uploading your file.";
        }
    }
}
?>

Keywords

PHP script forum thread potential issue user facing

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