Update start-prerequisites.md (#16060) [skip ci]

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Carsten Brandt
2018-04-09 10:27:03 +02:00
committed by Alexander Makarov
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# What do you need to know
Yii learning curve is not as steep as other PHP frameworks but still it requires some beforehand knowledge.
The Yii learning curve is not as steep as other PHP frameworks but still there are some things you should learn before starting with Yii.
## PHP
Yii is a PHP framework so make sure you [read and understand language reference](http://php.net/manual/en/langref.php).
When developing with Yii you will be writing code in an object oriented fashion, so make sure you are familiar with [Classes and Objects](https://secure.php.net/manual/en/language.oop5.basic.php) as well as [namespaces](https://secure.php.net/manual/en/language.namespaces.php).
## Object oriented programming
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## Command line and composer
Yii extensively uses de-facto standard PHP package manager, [Composer](https://getcomposer.org/) so make sure you read
and understand its guide. If you are not familiar with using command line it is time to start trying. Once you
and understand its [guide](https://getcomposer.org/doc/01-basic-usage.md). If you are not familiar with using command line it is time to start trying. Once you
learn the basics you'll never want to work without it.