Revision #49 was created by rackycz on Oct 11, 2020, 5:33:50 PM.
base64 stream download
Content
[...]
if (trim($this->company_name)!=='') {
$query->andFilterWhere(['like', 'table.column', $this->company_name]);
}
}
```
**Sending data as file to the browser**
---
In my tutorial for Yii v1 I presented following way how to send headers manually and then call exit(). But calling exit() or die() is not a good idea so I discovered a better way in Yii v2.
See chapter [Secured (secret) file download](https://www.yiiframework.com/wiki/462/yii-for-beginners-2)
Motivation: Sometimes you receive a PDF file encoded into a string using base64. For example a label with barcodes from FedEx, DPD or other delivery companies and your task is to show the label to users.
For me workes this algorithm:
```php
$pdfBase64 = 'JVBERi0xLjQ ... Y0CiUlRU9GCg==';
// First I create a fictive stream in a temporary file
// Read more about PHP wrappers:
// https://www.php.net/manual/en/wrappers.php.php
$stream = fopen('php://temp','r+');
// Decoded base64 is written into the stream
fwrite($stream, base64_decode($pdfBase64));
// And the stream is rewound back to the start so others can read it
rewind($stream);
// This row sets "Content-Type" header to none. Below I set it manually do application/pdf.