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<?xml version="1.0" encoding="UTF-8"?>
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<sect1 id="zend.json.introduction">
<title>Introduction</title>
<para>
<classname>Zend_Json</classname> provides convenience methods for serializing native
<acronym>PHP</acronym> to <acronym>JSON</acronym> and decoding <acronym>JSON</acronym> to
native <acronym>PHP</acronym>. For more information on <acronym>JSON</acronym>, <ulink
url="http://www.json.org/">visit the <acronym>JSON</acronym> project site</ulink>.
</para>
<para>
<acronym>JSON</acronym>, JavaScript Object Notation, can be used for data
interchange between JavaScript and other languages. Since <acronym>JSON</acronym> can be
directly evaluated by JavaScript, it is a more efficient and lightweight
format than <acronym>XML</acronym> for exchanging data with JavaScript clients.
</para>
<para>
In addition, <classname>Zend_Json</classname> provides a useful way to convert any
arbitrary <acronym>XML</acronym> formatted string into a <acronym>JSON</acronym> formatted
string. This built-in feature will enable <acronym>PHP</acronym> developers to transform the
enterprise data encoded in <acronym>XML</acronym> format into <acronym>JSON</acronym> format
before sending it to browser-based Ajax client applications. It provides an easy way to do
dynamic data conversion on the server-side code thereby avoiding unnecessary
<acronym>XML</acronym> parsing in the browser-side applications. It offers a nice utility
function that results in easier application-specific data processing techniques.
</para>
</sect1>
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