gistfile1.php

<?php

class UploadManager {

    public $fields = array();

    public function __construct($files = NULL) {
        if(is_null($files)) {
            $files = $_FILES;
        }
        $this->fields = $files;
    }

    protected function parseField($fieldName) {
        if(!array_key_exists($fieldName, $this->fields)) {
            return array();
        }
        $result = array();
        foreach($this->uglify($this->fields[$fieldName]) as $name => $values) {
            foreach($values as $index => $value) {
                $result[$index][$name] = $value;
            }
        }
        return $result;
    }

    protected function uglify($fields) {
        foreach($fields as $name => $value) {
            if(!is_array($value)) {
                $fields[$name] = array($value);
            }
        }
        return $fields;
    }

    public function getFiles($name) {
        return $this->parseField($name);
    }

    public function getFile($name) {
        $files = $this->getFiles($name);
        return array_shift($files);
    }

}

$files = array(
    'foo' => array(
        'name' => 'foo',
        'size' => 23
    ),
    'bar' => array(
        'name' => 'bar',
        'size' => 42
    )
);

$uploadManager = new UploadManager($files);
var_dump($uploadManager->getFile('foo'));
var_dump($uploadManager->getFiles('foo'));


$files = array(
    'foobar' => array(
        'name' => array('foo', 'bar'),
        'size' => array(23, 42)
    )
);

$uploadManager = new UploadManager($files);
var_dump($uploadManager->getFile('foobar'));
var_dump($uploadManager->getFiles('foobar'));

array(2) {
  'name' =>
  string(3) "foo"
  'size' =>
  int(23)
}


array(1) {
  [0] =>
  array(2) {
    'name' =>
    string(3) "foo"
    'size' =>
    int(23)
  }
}


array(2) {
  'name' =>
  string(3) "foo"
  'size' =>
  int(23)
}


array(2) {
  [0] =>
  array(2) {
    'name' =>
    string(3) "foo"
    'size' =>
    int(23)
  }
  [1] =>
  array(2) {
    'name' =>
    string(3) "bar"
    'size' =>
    int(42)
  }
}