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I'm new to Joomla! extension development, and I'm a little confused about the manifest XML file. What's the correct way to use these three version tags at the beginning of the XML file?

<?xml version="1.0" encoding="utf-8"?>

<extension version="2.5" type="plugin" group="content" method="upgrade">

<version>1.0</version>

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First version tag specifies the xml version. Please refer W3 standards for XML

Second version tag identifies the version of Joomla for which this extension is developed.

And third version stands for the version of this extension.

Refer Joomla Manifest for details.

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  • Also note that won't need to change <?xml version="1.0" encoding="utf-8"?>. It's only the other version numbers you will need to take into consideration ;)
    – Lodder
    Commented Jul 11, 2014 at 9:51
  • So the <extension version="2.5"... is the minimum version the extension will work in (as in 2.5 and above, including 3.x)? Can I specify an extension only compatible with 2.5 and not 3.x (pure curiosity...)?
    – johanpw
    Commented Jul 11, 2014 at 12:41
  • Well it indicates the minimum joomla version supported by the extension. You can not specify not supported joomla version here.
    – Nick
    Commented Jul 11, 2014 at 15:51

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