drupal form 中图片上传

1.创建url 链接到form

$items['qianfeng/add'] = array(

    'title' => t('加入信息'),

    'page callback' => 'drupal_get_form',

    'page arguments' => array('qianfeng_add',1),

    'file' => 'videocloud_qianfeng.pages.inc',

    'access callback' => 'user_is_logged_in',

    'weight' => -10,

    'type' => MENU_CALLBACK,

  );

创建form元素

$barcode_image 为图片路径

function qianfeng_add($form, $form_state,$barcode_id){

if(!empty($barcode_image)){

 $form['barcode_image_current'] = array(

   '#title' => t('图片'),

   '#prefix' => l('<img class="barcode_image" src='.$barcode_image.'>',$barcode_image , array("html" => true)),

   '#weight' => 3,

 );

  }

  $form['barcode_image'] = array(

      '#type' => 'file',

      '#name'=>'barcode_image',

   '#required' => false,

      '#weight' =>4

  );

  $form['submit'] = array(

   '#title' => t('提交'),

      '#type' => 'submit',

      '#value'=>'提交',

      '#weight' =>5

  );

  $form['#attributes']['enctype'] = 'multipart/form-data';

  return $form;

}

form 提交函数

function qianfeng_add_submit($form, $form_state){

$tp = array("gif","jpg","png","bmp");

$file = $_FILES["barcode_image"];

if(!empty($file['name'])){

 $path = "./sites/default/files/barcode/";

 if(!file_exists($path)){ 

    mkdir($path,0777,true);

  }

  $name = md5(time().rand(1,10000));

  $fname=$file['name'];

  $ftype=explode('.',$fname);

  $picName=$path.$name.'.'.$ftype[1];

  if(!in_array($ftype[1], $tp)){

    drupal_set_message("图片格式不对，正确的格式（gif,jpg,png,bmp）！",'warning');

    return false;

  }

  if(intval($file['size'])>2097152){

   drupal_set_message("图片大小超出2M,请上传2M下面的图片！",'warning');

   return false;

  }

$id = move_uploaded_file($file['tmp_name'],$picName);

$fields['image_name'] = $name.'.'.$ftype[1];

     $fields['image_path'] = "sites/default/files/barcode/";

}

}