Error when upload file Android - php

Question

I want to upload image from galery to server. I succeed to upload image, but i just can upload 1 file. if i upload 2 file, the 2nd file will be upload. The 1st file will not upload. or if i edit and upload 2nd image file, then 1st image file will be replaced by 2nd image file.
this is webservicecontroller.php
$imagePath = IMAGE_PATH_FOR_TIM_THUMB.'/'.STUDY_MATERIAL_DIR.'/';
if (!empty($_POST))
{
$this->loadModel('StudyMaterial');
if($_POST['type'] != 'delete')
{
$shift = array();
if($_POST['type'] == 'edit')
{
$shift['StudyMaterial']['id'] = $_POST['study_material_id'];
}
$shift['StudyMaterial']['user_id'] = $_POST['user_id'];
$shift['StudyMaterial']['standard_id'] = $_POST['standard_id'];
$shift['StudyMaterial']['subject_id'] = $_POST['subject_id'];
$shift['StudyMaterial']['topic_id'] = $_POST['topic_id'];
$shift['StudyMaterial']['lesson_id'] = $_POST['lesson_id'];
$shift['StudyMaterial']['name'] = $_POST['name'];
$shift['StudyMaterial']['description'] = $_POST['description'];
$this->StudyMaterial->save($shift);
$study_material_id = $this->StudyMaterial->id;
if(isset($_FILES['study_material_file']) && !empty($_FILES['study_material_file']) && ($_FILES['study_material_file']['error'] == 0))
{
$name = $_FILES['study_material_file']['name'];
$ext = substr(strrchr($name, "."), 1);
$only_name = $name . "_" . time();
$filename = 'topic_file_'.microtime(true).'.'.strtolower($ext);
$original = STUDY_MATERIAL_DIR . "/" . $filename;
$file_type = $_POST['file_type'];
if($file_type == 'video')
{
if(strtolower($ext) == 'mov')
{
$original = STUDY_MATERIAL_DIR . "/" . $filename;
#move_uploaded_file($_FILES["study_material_file"]["tmp_name"], $original);
$new_filename = $only_name. '.mp4';
$srcFile = STUDY_MATERIAL_DIR . "/" . $filename;
$destFile = STUDY_MATERIAL_DIR . "/" . $new_filename;
exec('ffmpeg -i '.$srcFile.' -f mp4 -s 320x240 '.$destFile.'');
if($_POST['type'] == 'edit')
{
$checkAlready = $this->StudyMaterial->find('first',array('conditions'=>array('StudyMaterial.id'=>$_POST['study_material_id'])));
$image = $checkAlready['StudyMaterial']['file_name'];
if($image && file_exists(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image ))
{
#unlink(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image);
}
}
$this->StudyMaterial->saveField('file_name',$filename,false);
$this->StudyMaterial->saveField('type',$file_type,false);
}
else
{
#move_uploaded_file($_FILES["study_material_file"]["tmp_name"], $original);
if($_POST['type'] == 'edit')
{
$checkAlready = $this->StudyMaterial->find('first',array('conditions'=>array('StudyMaterial.id'=>$_POST['study_material_id'])));
$image = $checkAlready['StudyMaterial']['file_name'];
if($image && file_exists(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image ))
{
#unlink(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image);
}
}
$this->StudyMaterial->saveField('file_name',$filename,false);
$this->StudyMaterial->saveField('type',$file_type,false);
}
}
else
{
#move_uploaded_file($_FILES["study_material_file"]["tmp_name"], $original);
if($_POST['type'] == 'edit')
{
$checkAlready = $this->StudyMaterial->find('first',array('conditions'=>array('StudyMaterial.id'=>$_POST['study_material_id'])));
$image = $checkAlready['StudyMaterial']['file_name'];
if($image && file_exists(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image ))
{
#unlink(WWW_ROOT.STUDY_MATERIAL_DIR.DS.$image);
}
}
$this->StudyMaterial->saveField('file_name',$filename,false);
$this->StudyMaterial->saveField('type',$file_type,false);
}
}
else
{
if($_POST['type'] == 'edit')
{
$this->StudyMaterial->id = $_POST['study_material_id'];
$this->StudyMaterial->saveField('file_name','',false);
$this->StudyMaterial->saveField('type','',false);
}
}
if($_POST['type'] == 'edit')
{
$responseData = array(
'status' => 1,
'message' => "Study Material updated successfully."
);
}
else
{
$responseData = array(
'status' => 1,
'message' => "Study Material added successfully."
);
}
}
Is the problem in webservice or android? this is add_material.java
private void selectImage() {
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
getActivity().startActivityForResult(Intent.createChooser(intent, "Select File"), SELECT_FILE);
}
public String getRealPathFromURI(Uri contentUri) {
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = getActivity().managedQuery(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}

Answer 1

Problem in your server side please check your database query where you update your column.