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185 lines
8.2 KiB
HTML
185 lines
8.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Interprets a string of XML into an object</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.simplexml-load-string" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">simplexml_load_string</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">simplexml_load_string</span> — <span class="dc-title">
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Interprets a string of XML into an object
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.simplexml-load-string-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>simplexml_load_string</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$class_name</code><span class="initializer"> = "SimpleXMLElement"</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$options</code><span class="initializer"> = 0</span></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$ns</code><span class="initializer"> = ""</span></span>
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[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$is_prefix</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
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]]]] ) : <span class="type"><a href="class.simplexmlelement.html" class="type SimpleXMLElement">SimpleXMLElement</a></span></div>
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<p class="para rdfs-comment">
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Takes a well-formed XML string and returns it as an object.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.simplexml-load-string-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">data</code></dt>
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<dd>
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<p class="para">
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A well-formed XML string
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</p>
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</dd>
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<dt>
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<code class="parameter">class_name</code></dt>
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<dd>
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<p class="para">
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You may use this optional parameter so that
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<span class="function"><strong>simplexml_load_string()</strong></span> will return an object of
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the specified class. That class should extend the
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<span class="type"><a href="class.simplexmlelement.html" class="type SimpleXMLElement">SimpleXMLElement</a></span> class.
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</p>
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</dd>
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<dt>
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<code class="parameter">options</code></dt>
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<dd>
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<p class="para">
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Since PHP 5.1.0 and Libxml 2.6.0, you may also use the
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<code class="parameter">options</code> parameter to specify <a href="libxml.constants.html" class="link">additional Libxml parameters</a>.
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</p>
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</dd>
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<dt>
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<code class="parameter">ns</code></dt>
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<dd>
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<p class="para">
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Namespace prefix or URI.
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</p>
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</dd>
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<dt>
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<code class="parameter">is_prefix</code></dt>
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<dd>
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<p class="para">
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<strong><code>TRUE</code></strong> if <code class="parameter">ns</code> is a prefix, <strong><code>FALSE</code></strong> if it's a URI;
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defaults to <strong><code>FALSE</code></strong>.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.simplexml-load-string-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an <span class="type"><a href="language.types.object.html" class="type object">object</a></span> of class <span class="type"><a href="class.simplexmlelement.html" class="type SimpleXMLElement">SimpleXMLElement</a></span> with
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properties containing the data held within the xml document, 或者在失败时返回 <strong><code>FALSE</code></strong>.
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</p>
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<div class="warning"><strong class="warning">Warning</strong><p class="simpara">此函数可能返回布尔值
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<strong><code>FALSE</code></strong>，但也可能返回等同于 <strong><code>FALSE</code></strong> 的非布尔值。请阅读 <a href="language.types.boolean.html" class="link">布尔类型</a>章节以获取更多信息。应使用
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<a href="language.operators.comparison.html" class="link">===
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运算符</a>来测试此函数的返回值。</p></div>
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</div>
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<div class="refsect1 errors" id="refsect1-function.simplexml-load-string-errors">
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<h3 class="title">错误／异常</h3>
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<p class="para">
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Produces an <strong><code>E_WARNING</code></strong> error message for each error
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found in the XML data.
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</p>
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<div class="tip"><strong class="tip">Tip</strong>
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<p class="para">
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Use <span class="function"><a href="libxml_use_internal_errors.html" class="function">libxml_use_internal_errors()</a></span> to suppress all XML
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errors, and <span class="function"><a href="libxml_get_errors.html" class="function">libxml_get_errors()</a></span> to iterate over them
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afterwards.
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</p>
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</div>
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</div>
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<div class="refsect1 examples" id="refsect1-function.simplexml-load-string-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-6594">
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<p><strong>Example #1 Interpret an XML string</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$string </span><span style="color: #007700">= <<<XML<br /></span><span style="color: #DD0000"><?xml version='1.0'?> <br /><document><br /> <title>Forty What?</title><br /> <from>Joe</from><br /> <to>Jane</to><br /> <body><br /> I know that's the answer -- but what's the question?<br /> </body><br /></document><br /></span><span style="color: #007700">XML;<br /><br /></span><span style="color: #0000BB">$xml </span><span style="color: #007700">= </span><span style="color: #0000BB">simplexml_load_string</span><span style="color: #007700">(</span><span style="color: #0000BB">$string</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$xml</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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SimpleXMLElement Object
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(
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[title] => Forty What?
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[from] => Joe
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[to] => Jane
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[body] =>
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I know that's the answer -- but what's the question?
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)
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</pre></div>
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</div>
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<div class="example-contents"><p>
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At this point, you can go about using <em>$xml->body</em>
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and such.
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</p></div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.simplexml-load-string-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="simplexml_load_file.html" class="function" rel="rdfs-seeAlso">simplexml_load_file()</a> - Interprets an XML file into an object</span></li>
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<li class="member"><span class="methodname"><a href="simplexmlelement.construct.html" class="methodname" rel="rdfs-seeAlso">SimpleXMLElement::__construct()</a> - Creates a new SimpleXMLElement object</span></li>
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<li class="member"><a href="simplexml.examples_errors.html" class="xref">Dealing with XML errors</a></li>
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<li class="member"><span class="function"><a href="libxml_use_internal_errors.html" class="function" rel="rdfs-seeAlso">libxml_use_internal_errors()</a> - Disable libxml errors and allow user to fetch error information as needed</span></li>
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<li class="member"><a href="simplexml.examples_basic.html" class="xref">Basic SimpleXML usage</a></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |