Zip file is not downloading in Yii2 - php

Question

I am trying to download the zip file with many images.This code is working when i call the path in browser but not downloading when i call from Jquery ajax.Need to change or add anything in header?please help.
Controller:
public function actionZipdownload(){
$files = Yii::$app->request->post('imgsrc');
//it displays the URLs.
$zip = new \ZipArchive();
$tmp_file = tempnam('.', '');
$zip->open($tmp_file, ZipArchive::CREATE);
foreach ($files as $file) {
$download_file = file_get_contents($file);
$zip->addFromString(basename($file), $download_file);
}
$zip->close();
header('Content-disposition: attachment; filename="my file.zip"');
header('Content-type: application/zip');
readfile($tmp_file);
unlink($tmp_file);
}
Jquery:
$.ajax({
url:url+'site/zipdownload',
data:{'imgsrc':imgsrc},
type:'POST',
success:function(data){
//alert(data);
}
});
In console response:

Answer 1

I just ignore the Jquery Ajax and done it by Html::a with two actions..When i am calling the url in a tag then the file got downloaded.And also done some changes in controller.
Views:
<?=Html::a('Create Zip',['site/zipdownload'],['class'=>'btn btn-danger pull-left'])?>
<?=Html::a('Download',['site/download'],['class'=>'btn btn-danger pull-left'])?>
Controller:
public function actionZipdownload(){
$files = Yii::$app->request->post('img_src');
$zip = new \ZipArchive();
$tmp_file = 'uploads/images.zip';
if(file_exists($tmp_file)){
$zip->open($tmp_file, ZipArchive::OVERWRITE);
}
else{
$zip->open($tmp_file, ZipArchive::CREATE);
}
$i=1;
foreach ($files as $file) {
$download_file = file_get_contents($file);
$fileParts = pathinfo($file);
$filename = $i.explode("?",$fileParts['filename'])[0];
$zip->addFromString($filename, $download_file);
$i++;
}
$zip->close();
}
public function actionDownload(){
$path = 'uploads/images.zip';
if(file_exists($path)){
\Yii::$app->response->sendFile($path)->send();
unlink($path);
}
else{
return $this->redirect(['site/dashboard']);
}
}