Zend_Json的使用

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Zend本身提供了许多有用的工具来方便使用。比如这次提到的Zend_Json。本身就非常便利。该类处于这个目录下：

Zend/
    Json/
        Decoder.php
        Encoder.php
        Exception.php
    Json.php

Encoding PHP Data Structure

With Zend_Json, encoding PHP data structure into JSON formatted string is really easy. All you have to do is include Zend_Json to your PHP script and call Zend_Json::encode() with the variable you want to encode as parameter:

require_once 'Zend/Json.php';$result = array('wine'=>3, 'sugar'=>4, 'lemon'=>22);echo  Zend_Json::encode($result);

Reverse Operation: Decoding

Besides encoding, Zend_Json can also decode JSON formatted string. Provided a JSON formatted string, Zend_Json:decode() will transform it into native PHP array:

require_once 'Zend/Json.php';$result = Zend_Json::decode( '{"wine":3,"sugar":4,"lemon":22}');print_r( $result);

Troubleshooting

Q: Why am I receiving the following error?

Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in [PROJECT_PATH]/Zend/Json/Encoder.php on line 402

A: Your PHP version is too low. Make sure you are using PHP 5.1.4 or later.