| protected packFields ( array $fields ) : string | ||
| $fields | array | |
| return | string | |
protected function packFields($fields)
{
list($fmt, $args) = array('', array());
// populate format string and argument list
foreach ($fields as $field) {
$fmt .= $field[0];
$args[] = $field[1];
}
// prepend format string to argument list
array_unshift($args, $fmt);
// build output string from header and compressed data
return call_user_func_array('pack', $args);
}