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Yii v2 snippet guide II

Revision #21 has been created by rackycz on Sep 8, 2020, 7:41:46 PM with the memo:

Composer and PhpExcel
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Yii v2 snippet guide II

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Tutorials

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2.0

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tutorial,beginner,yii2,snippets

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[...]
exit();
```

Thanks to [DbCreator](https://forum.yiiframework.com/t/yii2-phpoffice-phpspreadsheet-src-phpspreadsheet-shared-ole-pps-root-php-on-line-292-headers-already-sent/126617) for the latter approach.

Following is my idea which originates in method renderPhpFile() from Yii2:

```php
ob_start();
ob_implicit_flush(false);
$writer->save('php://output');
[...]
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Viewed: 68 723 times
Version: 2.0
Category: Tutorials
Tags: beginner, snippets, tutorial, yii2
Written by: rackycz
Last updated by: rackycz
Created on: Aug 26, 2020
Last updated: 2 years ago
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