php - How to save a the content into the file with neat alignment? -

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I have a textbox in which I have loaded an XML file. After editing and saving the XML content in the XML file, the content is not in the correct form. While reloading, its not in XML format - How to accumulate content in a file - How can save files with streamlined alignment?
Please help me

For example, I have to save like the following

but 

  & lt; Section & gt; & Lt; Value & gt; A & lt; / Value & gt; & Lt; Value & gt; B & lt; / Value & gt; & Lt; ; / Section & gt;

Thank you, Praveen Jay

As Gordon Say your question does not have any meaning - XML ​​piece is still "well made" (but completely away from it), therefore it is in in the correct form.

Do you want you to preserve the format presented to it? In which case it & lt; Pre & gt; ... & lt; / Pre & gt; Tag OTOH is the standard device that formats XML according to specific standards - e.g.

C


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