How can PHP developers effectively handle version discrepancies when using functions like move_uploaded_file()?

When using functions like move_uploaded_file(), PHP developers can effectively handle version discrepancies by checking the PHP version before executing the function. This can be done using the PHP_VERSION constant and comparing it to the required version for the function. If the PHP version is lower than the required version, an alternative method or workaround can be used to achieve the same functionality.

if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
    // PHP version is 5.4.0 or higher, safe to use move_uploaded_file()
    move_uploaded_file($_FILES['file']['tmp_name'], '/path/to/destination/file');
} else {
    // PHP version is lower than 5.4.0, use an alternative method
    // For example, copy the uploaded file using file_get_contents() and file_put_contents()
    $fileContent = file_get_contents($_FILES['file']['tmp_name']);
    file_put_contents('/path/to/destination/file', $fileContent);
}