這篇文章主要介紹了php中simplexml_load_string使用實例,需要的朋友可以參考下
先用一段代碼重現一下問題 乍一看，結果很讓人費解： 代碼如下: <?php $string = <<<EOF <data> <foo><bar>hello</bar></foo> <foo><bar>world</bar></foo> </data> EOF; $data = simplexml_load_string($string); print_r($data); print_r($data->foo); ?> 乍一看，結果很讓人費解： 代碼如下: SimpleXMLElement Object ( [foo] => Array ( [0] => SimpleXMLElement Object ( [bar] => hello ) [1] => SimpleXMLElement Object ( [bar] => world ) ) ) SimpleXMLElement Object ( [bar] => hello ) 明明print_r顯示foo是一個有兩個bar元素的數組，但是最後卻僅僅顯示了一個bar元素！ 原因其實很簡單，在如上所示simplexml_load_string的結果裡，foo並不是數組，而是一個迭代對象！ 可以這樣確認： 代碼如下: foreach ($data->foo as $v) print_r($v); foreach ($data->children() as $v) print_r($v); 看來，print_r或者var_dump之類的表象並不完全可信，自己多留心吧。 假如我們獲取的XML數據如下：（可以使用curl、fsockopen等方式獲取） 代碼如下: <?xml version="1.0" encoding="UTF-8"?> <dict num="219" id="219" name="219"> <key>你好</key> <pos></pos> <acceptation>Array；Array；Array；</acceptation> <sent> <orig>Haven't seen you for a long time. How are you?</orig> <trans>多日不見了，你好嗎？</trans> </sent> <sent> <orig>Hello! How are you?</orig> <trans>嘿，你好？</trans> </sent> <sent> <orig>Hello, Brooks!How are you?</orig> <trans>喂，布魯克斯！你好嗎？</trans> </sent> <sent> <orig>Hi, Barbara, how are you?</orig> <trans>嘿，芭芭拉，你好嗎？</trans> </sent> <sent> <orig>How are you? -Quite well, thank you.</orig> <trans>你好嗎？-很好，謝謝你。</trans> </sent> </dict> 經過simplexml_load_string得到： 代碼如下: SimpleXMLElement Object ( [@attributes] => Array ( [num] => 219 [id] => 219 [name] => 219 ) [key] => 你好 [pos] => SimpleXMLElement Object ( ) [acceptation] => Array；Array；Array； [sent] => Array ( [0] => SimpleXMLElement Object ( [orig] => Haven't seen you for a long time. How are you? [trans] => 多日不見了，你好嗎？ ) [1] => SimpleXMLElement Object ( [orig] => Hello! How are you? [trans] => 嘿，你好？ ) [2] => SimpleXMLElement Object ( [orig] => Hello, Brooks!How are you? [trans] => 喂，布魯克斯！你好嗎？ ) [3] => SimpleXMLElement Object ( [orig] => Hi, Barbara, how are you? [trans] => 嘿，芭芭拉，你好嗎？ ) [4] => SimpleXMLElement Object ( [orig] => How are you? -Quite well, thank you. [trans] => 你好嗎？-很好，謝謝你。 ) ) ) 我們在PHP語言中可以用以下方法取得我們想要的值： 碼 代碼如下: <?php $data = <<<XML <?xml version="1.0" encoding="UTF-8"?> <dict num="219" id="219" name="219"> <key>你好</key> <pos></pos> <acceptation>Array；Array；Array；</acceptation> <sent> <orig>Haven't seen you for a long time. How are you?</orig> <trans>多日不見了，你好嗎？</trans> </sent> <sent> <orig>Hello! How are you?</orig> <trans>嘿，你好？</trans> </sent> <sent> <orig>Hello, Brooks!How are you?</orig> <trans>喂，布魯克斯！你好嗎？</trans> </sent> <sent> <orig>Hi, Barbara, how are you?</orig> <trans>嘿，芭芭拉，你好嗎？</trans> </sent> <sent> <orig>How are you? -Quite well, thank you.</orig> <trans>你好嗎？-很好，謝謝你。</trans> </sent> </dict> XML; $xmldata = simplexml_load_string($data); header("Content-Type: text/html; charset=UTF-8"); print_r($xmldata); echo "<br />".trim($xmldata->sent[0]->orig); //Haven't seen you for a long time. How are you? echo "<br />".trim($xmldata->key); //你好 ?>
