{"id":3130,"date":"2025-03-22T10:36:09","date_gmt":"2025-03-22T02:36:09","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3130"},"modified":"2025-03-22T10:36:09","modified_gmt":"2025-03-22T02:36:09","slug":"php-simplexml","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/22\/php-simplexml\/","title":{"rendered":"PHP SimpleXML"},"content":{"rendered":"\n<p>PHP \u7684 <strong>SimpleXML<\/strong> \u662f\u4e00\u4e2a\u975e\u5e38\u8f7b\u91cf\u7ea7\u7684 XML \u89e3\u6790\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u3001\u76f4\u89c2\u7684\u65b9\u5f0f\u6765\u5904\u7406 XML \u6570\u636e\u3002\u4e0e <strong>DOM<\/strong> \u548c <strong>Expat<\/strong> \u89e3\u6790\u5668\u76f8\u6bd4\uff0c<strong>SimpleXML<\/strong> \u66f4\u5bb9\u6613\u4f7f\u7528\uff0c\u7279\u522b\u9002\u5408\u90a3\u4e9b\u53ea\u9700\u8981\u8bfb\u53d6\u6216\u8f7b\u5fae\u4fee\u6539 XML \u6570\u636e\u7684\u573a\u666f\u3002\u5b83\u7684\u4f18\u70b9\u662f API \u975e\u5e38\u7b80\u5355\uff0c\u4ee3\u7801\u975e\u5e38\u7b80\u6d01\uff0c\u9002\u5408\u5feb\u901f\u5f00\u53d1\u548c\u5c0f\u578b\u9879\u76ee\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. <strong>SimpleXML \u6982\u8ff0<\/strong><\/h2>\n\n\n\n<p>SimpleXML \u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\u6765\u64cd\u4f5c XML \u6570\u636e\u3002\u5b83\u4f1a\u5c06 XML \u6587\u6863\u52a0\u8f7d\u5230\u5bf9\u8c61\u4e2d\uff0c\u7528\u6237\u53ef\u4ee5\u50cf\u8bbf\u95ee\u5bf9\u8c61\u7684\u5c5e\u6027\u4e00\u6837\uff0c\u76f4\u63a5\u8bbf\u95ee XML \u5143\u7d20\u3001\u5c5e\u6027\u548c\u6587\u672c\u5185\u5bb9\u3002SimpleXML \u6bd4\u8f83\u9002\u5408\u5bf9\u7ed3\u6784\u7b80\u5355\u7684 XML \u6570\u636e\u8fdb\u884c\u89e3\u6790\u548c\u4fee\u6539\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u57fa\u672c\u7279\u70b9<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6613\u7528\u6027<\/strong>\uff1aSimpleXML \u63d0\u4f9b\u4e86\u975e\u5e38\u76f4\u89c2\u7684\u63a5\u53e3\uff0c\u4f60\u53ef\u4ee5\u50cf\u64cd\u4f5c PHP \u5bf9\u8c61\u4e00\u6837\u8bbf\u95ee XML \u8282\u70b9\u548c\u5c5e\u6027\u3002<\/li>\n\n\n\n<li><strong>\u6027\u80fd\u8f83\u9ad8<\/strong>\uff1a\u76f8\u8f83\u4e8e DOM\uff0c\u5b83\u7684\u5185\u5b58\u6d88\u8017\u8f83\u4f4e\uff0c\u56e0\u6b64\u5728\u5904\u7406\u8f83\u5c0f\u548c\u4e2d\u7b49\u5927\u5c0f\u7684 XML \u6587\u6863\u65f6\u975e\u5e38\u9ad8\u6548\u3002<\/li>\n\n\n\n<li><strong>\u53ea\u8bfb\u64cd\u4f5c<\/strong>\uff1a\u867d\u7136 SimpleXML \u5141\u8bb8\u4fee\u6539 XML \u8282\u70b9\uff0c\u4f46\u662f\u5b83\u7684\u4fee\u6539\u64cd\u4f5c\u5e76\u4e0d\u5982 DOM \u90a3\u6837\u7075\u6d3b\u548c\u5f3a\u5927\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u8bfb\u53d6\u548c\u7b80\u5355\u4fee\u6539 XML \u6587\u6863\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5e38\u7528\u51fd\u6570\u548c\u64cd\u4f5c<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><code>simplexml_load_string()<\/code><\/strong>\uff1a\u4ece\u5b57\u7b26\u4e32\u52a0\u8f7d XML\u3002<\/li>\n\n\n\n<li><strong><code>simplexml_load_file()<\/code><\/strong>\uff1a\u4ece\u6587\u4ef6\u52a0\u8f7d XML\u3002<\/li>\n\n\n\n<li><strong><code>asXML()<\/code><\/strong>\uff1a\u5c06 SimpleXML \u5bf9\u8c61\u8f6c\u6362\u4e3a XML \u5b57\u7b26\u4e32\u3002<\/li>\n\n\n\n<li><strong><code>xpath()<\/code><\/strong>\uff1a\u6267\u884c XPath \u67e5\u8be2\uff0c\u67e5\u627e\u8282\u70b9\u3002<\/li>\n\n\n\n<li><strong><code>addChild()<\/code><\/strong>\uff1a\u5411 XML \u5143\u7d20\u4e2d\u6dfb\u52a0\u5b50\u8282\u70b9\u3002<\/li>\n\n\n\n<li><strong><code>addAttribute()<\/code><\/strong>\uff1a\u4e3a\u8282\u70b9\u6dfb\u52a0\u5c5e\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">2. <strong>PHP \u4ee3\u7801\u793a\u4f8b<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \u52a0\u8f7d\u548c\u89e3\u6790 XML \u6587\u4ef6<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u4ece\u6587\u4ef6\u52a0\u8f7d XML\n$xml = simplexml_load_file(\"books.xml\");\n\n\/\/ \u8f93\u51fa XML \u5185\u5bb9\necho $xml-&gt;asXML();\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \u521b\u5efa XML \u6587\u6863<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 SimpleXML \u5bf9\u8c61\n$xml = new SimpleXMLElement('&lt;bookstore\/&gt;');\n\n\/\/ \u6dfb\u52a0 &lt;book&gt; \u5143\u7d20\n$book = $xml-&gt;addChild('book');\n$book-&gt;addChild('title', 'PHP for Beginners');\n$book-&gt;addChild('author', 'John Doe');\n$book-&gt;addChild('price', '19.99');\n\n\/\/ \u8f93\u51fa\u751f\u6210\u7684 XML\necho $xml-&gt;asXML();\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u8bfb\u53d6 XML \u6570\u636e<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u4ece\u5b57\u7b26\u4e32\u52a0\u8f7d XML\n$xml = simplexml_load_string('&lt;bookstore&gt;&lt;book&gt;&lt;title&gt;PHP for Beginners&lt;\/title&gt;&lt;author&gt;John Doe&lt;\/author&gt;&lt;price&gt;19.99&lt;\/price&gt;&lt;\/book&gt;&lt;\/bookstore&gt;');\n\n\/\/ \u8bbf\u95ee &lt;book&gt; \u5143\u7d20\u4e2d\u7684\u5185\u5bb9\necho \"Title: \" . $xml-&gt;book-&gt;title . \"\\n\";\necho \"Author: \" . $xml-&gt;book-&gt;author . \"\\n\";\necho \"Price: \" . $xml-&gt;book-&gt;price . \"\\n\";\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \u4fee\u6539 XML \u5143\u7d20<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u52a0\u8f7d XML \u6587\u4ef6\n$xml = simplexml_load_file(\"books.xml\");\n\n\/\/ \u4fee\u6539\u7b2c\u4e00\u4e2a &lt;book&gt; \u5143\u7d20\u4e2d\u7684 &lt;price&gt; \u5143\u7d20\n$xml-&gt;book&#91;0]-&gt;price = \"29.99\";\n\n\/\/ \u4fdd\u5b58\u4fee\u6539\u540e\u7684 XML\n$xml-&gt;asXML(\"books_updated.xml\");\n\necho \"XML file updated successfully.\";\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. \u4f7f\u7528 XPath \u67e5\u8be2<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u4ece\u6587\u4ef6\u52a0\u8f7d XML\n$xml = simplexml_load_file(\"books.xml\");\n\n\/\/ \u6267\u884c XPath \u67e5\u8be2\uff0c\u67e5\u627e\u6240\u6709 &lt;book&gt; \u5143\u7d20\n$books = $xml-&gt;xpath('\/\/book');\n\n\/\/ \u8f93\u51fa\u6bcf\u4e2a\u4e66\u7c4d\u7684\u6807\u9898\nforeach ($books as $book) {\n    echo \"Title: \" . $book-&gt;title . \"\\n\";\n}\n?&gt;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. \u6dfb\u52a0\u5b50\u8282\u70b9\u548c\u5c5e\u6027<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\/\/ \u521b\u5efa\u65b0\u7684 SimpleXML \u5bf9\u8c61\n$xml = new SimpleXMLElement('&lt;bookstore\/&gt;');\n\n\/\/ \u6dfb\u52a0 &lt;book&gt; \u5143\u7d20\n$book = $xml-&gt;addChild('book');\n\n\/\/ \u6dfb\u52a0 &lt;title&gt; \u548c &lt;author&gt; \u5143\u7d20\n$book-&gt;addChild('title', 'PHP for Advanced Developers');\n$book-&gt;addChild('author', 'Jane Doe');\n\n\/\/ \u4e3a &lt;book&gt; \u5143\u7d20\u6dfb\u52a0\u5c5e\u6027\n$book-&gt;addAttribute('isbn', '123456789');\n\n\/\/ \u8f93\u51fa\u751f\u6210\u7684 XML\necho $xml-&gt;asXML();\n?&gt;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">3. <strong>\u4f18\u52bf\u4e0e\u5c40\u9650\u6027<\/strong><\/h2>\n\n\n\n<p><strong>\u4f18\u52bf\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6613\u7528\u6027\u9ad8<\/strong>\uff1aSimpleXML \u63d0\u4f9b\u4e86\u975e\u5e38\u7b80\u6d01\u4e14\u76f4\u89c2\u7684 API\uff0c\u4f60\u53ef\u4ee5\u50cf\u64cd\u4f5c\u666e\u901a\u5bf9\u8c61\u4e00\u6837\u64cd\u4f5c XML \u5143\u7d20\u3002<\/li>\n\n\n\n<li><strong>\u5185\u5b58\u5360\u7528\u5c11<\/strong>\uff1a\u5b83\u6bd4 DOM \u66f4\u8f7b\u91cf\uff0c\u9002\u7528\u4e8e\u4e2d\u5c0f\u578b\u7684 XML \u6570\u636e\u5904\u7406\uff0c\u5c24\u5176\u9002\u5408\u5feb\u901f\u5f00\u53d1\u3002<\/li>\n\n\n\n<li><strong>\u9002\u5408\u7b80\u5355 XML \u6587\u6863<\/strong>\uff1a\u5bf9\u4e8e\u7ed3\u6784\u6bd4\u8f83\u7b80\u5355\u7684 XML \u6587\u4ef6\uff0cSimpleXML \u662f\u4e00\u4e2a\u975e\u5e38\u5feb\u901f\u4e14\u9ad8\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u5c40\u9650\u6027\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4fee\u6539\u80fd\u529b\u6709\u9650<\/strong>\uff1a\u867d\u7136\u53ef\u4ee5\u4fee\u6539\u8282\u70b9\u5185\u5bb9\uff0c\u4f46\u5b83\u4e0d\u50cf DOM \u90a3\u6837\u652f\u6301\u5e7f\u6cdb\u7684\u64cd\u4f5c\uff0c\u5982\u521b\u5efa\u548c\u5220\u9664\u8282\u70b9\u7b49\u9ad8\u7ea7\u529f\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u6027\u80fd\u95ee\u9898<\/strong>\uff1a\u867d\u7136\u5b83\u6bd4 DOM \u66f4\u8f7b\u91cf\uff0c\u4f46\u5982\u679c XML \u6587\u4ef6\u8fc7\u5927\uff0c\u4ecd\u7136\u4f1a\u9047\u5230\u5185\u5b58\u6d88\u8017\u95ee\u9898\uff08\u4f46\u901a\u5e38\u4e0d\u4f1a\u50cf DOM \u90a3\u6837\u4e25\u91cd\uff09\u3002<\/li>\n\n\n\n<li><strong>\u4ec5\u9002\u5408\u7b80\u5355\u64cd\u4f5c<\/strong>\uff1a\u5f53\u9700\u8981\u590d\u6742\u7684 XML \u6570\u636e\u7ed3\u6784\u64cd\u4f5c\u65f6\uff0cSimpleXML \u7684\u529f\u80fd\u5c31\u663e\u5f97\u8f83\u4e3a\u6709\u9650\uff0c\u63a8\u8350\u4f7f\u7528 DOM \u6216 Expat \u89e3\u6790\u5668\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5b98\u65b9\u6587\u6863\u94fe\u63a5<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/en\/book.simplexml.php\">PHP \u5b98\u65b9\u6587\u6863 &#8211; SimpleXML<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.w3schools.com\/php\/php_simplexml_load_file.asp\">SimpleXML \u793a\u4f8b\u4e0e\u6559\u7a0b<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h2>\n\n\n\n<p><strong>SimpleXML<\/strong> \u662f PHP \u4e2d\u975e\u5e38\u5f3a\u5927\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u5de5\u5177\uff0c\u9002\u5408\u5904\u7406\u5c0f\u5230\u4e2d\u7b49\u89c4\u6a21\u7684 XML \u6570\u636e\u3002\u5b83\u975e\u5e38\u9002\u5408\u5feb\u901f\u5f00\u53d1\u548c\u9700\u8981\u7b80\u5355 XML \u64cd\u4f5c\u7684\u573a\u666f\u3002\u5bf9\u4e8e\u8f83\u590d\u6742\u7684 XML \u6570\u636e\u7ed3\u6784\u6216\u5bf9\u5185\u5b58\u548c\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u5e94\u7528\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u4f7f\u7528 <strong>DOM<\/strong> \u6216 <strong>Expat<\/strong> \u89e3\u6790\u5668\u3002<\/p>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u7684 SimpleXML \u662f\u4e00\u4e2a\u975e\u5e38\u8f7b\u91cf\u7ea7\u7684 XML \u89e3\u6790\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u3001\u76f4\u89c2\u7684\u65b9\u5f0f\u6765\u5904\u7406 XM [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3131,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-3130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3130"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3130\/revisions"}],"predecessor-version":[{"id":3132,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3130\/revisions\/3132"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3131"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}