What is the purpose of passing an upload to a function in PHP?

When passing an upload to a function in PHP, the purpose is to handle the uploaded file within the function, such as moving it to a specific directory, checking its file type, size, or performing any other necessary operations on the file. 

// Example of passing an uploaded file to a function in PHP
function handleUpload($file) {
    $targetDir = "uploads/";
    $targetFile = $targetDir . basename($file["name"]);

    // Move the uploaded file to the target directory
    if (move_uploaded_file($file["tmp_name"], $targetFile)) {
        echo "File uploaded successfully.";
    } else {
        echo "Error uploading file.";
    }
}

// Usage
if ($_FILES["fileToUpload"]["error"] == UPLOAD_ERR_OK) {
    handleUpload($_FILES["fileToUpload"]);
}

Keywords

file upload function parameter PHP file handling data processing

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