What are common issues with file uploads in PHP on different web hosting services?

Common issues with file uploads in PHP on different web hosting services include limitations on file size, restrictions on file types, and insufficient permissions for the upload directory. To solve these issues, you can adjust the PHP configuration settings, validate the file type and size before uploading, and ensure the correct permissions are set for the upload directory. 

// Adjust PHP configuration settings for file uploads
ini_set('upload_max_filesize', '10M');
ini_set('post_max_size', '10M');

// Validate file type and size before uploading
$allowedTypes = ['image/jpeg', 'image/png'];
$maxFileSize = 10 * 1024 * 1024; // 10MB

if (in_array($_FILES['file']['type'], $allowedTypes) && $_FILES['file']['size'] <= $maxFileSize) {
    // Upload file to the directory
} else {
    echo "Invalid file type or size.";
}

// Ensure correct permissions for the upload directory
chmod('uploads/', 0777);

Keywords

file uploads PHP web hosting error handling security vulnerabilities

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