如何在上传 zf2 和 Amazon S3 之前重命名文件名？这是我的代码：
$files = $request->getFiles();
$bucketname = 'mybucket';
$result = $aws->putObject(array(
'Bucket' => $bucketname,
'Key' => 'user/5/'.$files['image-file']['name'],
'Body' => EntityBody::factory(fopen($files['image-file']['tmp_name'], 'r')),
'ACL' => CannedAcl::PUBLIC_READ,
'ContentType' => 'image/jpeg'
));
这是一个工作示例，将图像上传到 zf2，重命名并保存到数据库
namespace Admin\Form;
use Zend\Form\Form;
class SubcategoryimageForm extends Form
{
public function __construct($name = null)
{
parent::__construct('Subcategoryimage');
$this->setAttribute('method', 'post');
$this->setAttribute('enctype','multipart/form-data');
$this->add(array(
'name' => 'id',
'attributes' => array(
'type' => 'hidden',
),
));
$this->add(array(
'name' => 'subcategory_link_id',
'attributes' => array(
'type' => 'hidden',
),
));
$this->add(array(
'name' => 'alt',
'attributes' => array(
'type' => 'text',
),
'options' => array(
'label' => 'Alt Text',
),
));
$this->add(array(
'name' => 'fileupload',
'attributes' => array(
'type' => 'file',
),
'options' => array(
'label' => 'File Upload',
),
));
$this->add ( array (
'name' => 'detail',
'attributes' => array (
'type' => 'textarea'
),
'options' => array (
'label' => 'Detail'
)
) );
$this->add ( array (
'type' => 'Zend\Form\Element\Checkbox',
'name' => 'active',
'tabindex' => 3,
'options' => array (
'label' => 'Active',
'use_hidden_element' => true,
'checked_value' => '1',
'unchecked_value' => '0'
)
) );
$this->add(array(
'type' => 'Zend\Form\Element\Radio',
'name' => 'location',
'options' => array(
'label' => 'Please choose one of the choices',
'value_options' => array(
'1' => 'flag',
'2' => 'landing',
'3' => 'home page',
),
),
'attributes' => array(
'value' => '1' //set checked to '1'
)
));
$this->add ( array (
'name' => 'submit',
'type' => 'Submit',
'tabindex' => 5,
'size' => 20,
'required' => false,
'attributes' => array (
'value' => 'Upload File',
'id' => 'submitbutton'
)
) );
}
}
在您的控制器中
//包括想象模块
use Zend\Validatior\File\Size;
use Imagine\Gd\Imagine;
use Imagine\Image\Box;
use Imagine\Image\Point;
public function imageAction()
{
$id = ( int ) $this->params ()->fromRoute ( 'id', 0 );
if (! $id) {
return $this->redirect ()->toRoute ( 'category' );
}
$form = new SubcategoryimageForm();
$form->get ( 'subcategory_link_id' )->setAttribute ( 'value', $id );
$request = $this->getRequest();
if ($request->isPost()) {
// Make certain to merge the files info!
$image = new Subcategoryimage();
$form->setInputFilter($image->getInputFilter());
$post = array_merge_recursive(
$request->getPost()->toArray(),
$request->getFiles()->toArray()
);
$form->setData($post);
if ($form->isValid()) {
$size = new \Zend\Validator\File\ImageSize(array(
'minWidth' => 30, 'minHeight' => 30,
'maxWidth' => 1024, 'maxHeight' => 920,
)); //minimum bytes filesize
$isImage = new \Zend\Validator\File\IsImage();
$mimeType = new \Zend\Validator\File\MimeType(array('image/gif', 'image/jpg','image/jpeg','image/png','enableHeaderCheck' => true));
$adapter = new \Zend\File\Transfer\Adapter\Http();
$adapter->setValidators(array($size), $post['fileupload']['name']);
$adapter->setValidators(array($isImage), $post['fileupload']['name']);
$adapter->setValidators(array($mimeType), $post['fileupload']['name']);
if (!$adapter->isValid()){
$dataError = $adapter->getMessages();
$error = array();
foreach($dataError as $key=>$row)
{
$error[] = $row;
}
$form->setMessages(array('fileupload'=>$error ));
$messages = $form->getMessages();
return $this->redirect ()->toRoute ( 'category' );
// print_r($messages);die('file errors');
} else {
//$adapter->setDestination(dirname(__DIR__).'imageurltosaveimage/');
$adapter->setDestination('imagepathtosave');
if ($adapter->receive($post['fileupload']['name'])) {
$image->exchangeArray($form->getData());
switch(strtolower($_FILES['fileupload']['type']))
{
case 'image/jpeg':
$filename = imagecreatefromjpeg('imagepath/'.$post['fileupload']['name']);
break;
case 'image/png':
$filename = imagecreatefrompng('imagepath/'.$post['fileupload']['name']);
break;
case 'image/gif':
$filename = imagecreatefromgif('imagepath/'.$post['fileupload']['name']);
break;
default:
exit('Unsupported type: '.$_FILES['fileupload']['type']);
}
ob_start();
imagejpeg($filename);
// large image
$large = base64_encode(ob_get_contents()); // returns output
$mainimgWidth = imagesx($filename);
$mainimgHeight = imagesy($filename);
$thumbWidth = intval($mainimgWidth / 4);
$thumbHeight = intval($mainimgHeight / 4);
$new = imagecreatetruecolor($thumbWidth, $thumbHeight);
$backgroundColor = imagecolorallocate($new, 255, 255, 255);
imagefill($new, 0, 0, $backgroundColor);
imagecopyresampled($new, $filename, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $mainimgWidth, $mainimgHeight);
/** Catch the imagedata */
ob_start();
imagejpeg($new);
$data = ob_get_clean();
// Destroy resources
imagedestroy($filename);
imagedestroy($new);
// Set new content-type and status code
$thumb = base64_encode($data);
// imagine library was intsalled by the composer in the test server by amarjit
ob_end_clean();
$imagine = new Imagine();
//rename files
$filedata = array(
'id' => $post ['id'],
'subcategory_link_id' => $post ['subcategory_link_id'],
'alt' => $post ['alt'],
'detail' => $post ['detail'],
'active' => $post ['active'],
'location' => $post ['location'],
'thumb' => $thumb,
'large' => $large,
'created' => date('Y-m-d H:i:s'),
'createdby' => 1,
);
$id = $this->getImageTable ()->save ( $filedata );
$imagine->open('ipathofimage/'.$post['fileupload']['name'])
->save('pathtosaveimages/newnameofimage-'.$id.'.jpg');
/**
* delete the origional uploaded file;
*/
unlink('pathtoimage/'.$post['fileupload']['name']);
return $this->redirect ()->toRoute ( 'category' );
}
}
}else{
$messages = $form->getMessages();
}
}
return array (
'id' => $id,
'form' => $form,
'entities' => $this->getImageTable ()->getImageContents($id),
);
}
从数据库中获取图像
在您的操作中使用以下代码
public function getlandingimageAction()
{
$id = ( int ) $this->params ()->fromRoute ( 'id', 0 );
if (! $id) {
return $this->redirect ()->toRoute ( 'category' );
}
try {
$thumb = $this->getImageTable ()->getImage ( $id );
} catch ( \Exception $ex ) {
return $this->redirect ()->toRoute ( 'category', array (
'action' => 'index'
) );
}
$image = base64_decode($thumb);
/** check if the image is db */
if($image!=null)
{
$db_img = imagecreatefromstring($image);
Header("Content-type: image/jpeg");
imagejpeg($db_img);
}
else
{
/** check if the image is upload dir */
$url= "path/imagename".$id.'.jpg';
if(file_exists($url))
{
$db_img = imagecreatefromjpeg($url);
Header("Content-type: image/jpeg");
imagejpeg($db_img);
exit;
}
/** handle if the image does not exit */
/**
* This needs to be changed from t
*/
$imgurl= "paaathofimage/";
Header("Content-type: image/gif");
$i=imagecreatefromgif($imgurl."/images/noimg.gif");
imagegif($i);
}
exit;
}