{"id":30923,"date":"2023-11-13T21:21:49","date_gmt":"2023-04-27T22:22:34","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%af%b9simplexml%e8%bf%9b%e8%a1%8c%e8%bd%ac%e4%b9%89\/"},"modified":"2025-08-12T21:25:04","modified_gmt":"2025-08-12T13:25:04","slug":"php%e5%af%b9simplexml%e8%bf%9b%e8%a1%8c%e8%bd%ac%e4%b9%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%af%b9simplexml%e8%bf%9b%e8%a1%8c%e8%bd%ac%e4%b9%89\/","title":{"rendered":"[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u7531\u4e8ePHP\u7684SimpleXML\u7684\u529f\u80fd\u76f8\u5bf9\u795e\u79d8\uff0c\u56e0\u6b64\u6211\u603b\u7ed3\u4e86\u4e00\u4e0b\u3002<\/p>\n<h1>\u6587\u672c\u8282\u70b9\u7684\u8f6c\u4e49<\/h1>\n<p>\u5728\u4f7f\u7528SimpleXML\u5c06\u6587\u672c\u63d2\u5165\u65f6\uff0c\u4e00\u822c\u6709\u5927\u7ea6\u4e09\u79cd\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$xml<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">SimpleXMLElement<\/span><span class=\"p\">(<\/span><span class=\"s1\">'&lt;root&gt;&lt;\/root&gt;'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$text<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\"PHP&amp;XML!\"\\(&gt;_@)\/'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"cm\">\/*1\u3064\u3081*\/<\/span>\r\n<span class=\"nv\">$item1<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addChild<\/span><span class=\"p\">(<\/span><span class=\"s1\">'item1'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nv\">$item1<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$text<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">assertEquals<\/span><span class=\"p\">(<\/span><span class=\"nv\">$text<\/span><span class=\"p\">,<\/span><span class=\"nv\">$item1<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]);<\/span>\r\n\r\n<span class=\"cm\">\/*2\u3064\u3081*\/<\/span>\r\n<span class=\"nv\">$text2<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addChild<\/span><span class=\"p\">(<\/span><span class=\"s1\">'item2'<\/span><span class=\"p\">)<\/span><span class=\"o\">-&gt;<\/span><span class=\"p\">{<\/span><span class=\"mi\">0<\/span><span class=\"p\">}<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$text<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">assertEquals<\/span><span class=\"p\">(<\/span><span class=\"nv\">$text<\/span><span class=\"p\">,<\/span><span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">item2<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]);<\/span>\r\n\r\n<span class=\"cm\">\/*3\u3064\u3081*\/<\/span>\r\n<span class=\"nv\">$item3<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addChild<\/span><span class=\"p\">(<\/span><span class=\"s1\">'item3'<\/span><span class=\"p\">,<\/span><span class=\"nv\">$text<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">assertEquals<\/span><span class=\"p\">(<\/span><span class=\"nv\">$text<\/span><span class=\"p\">,<\/span><span class=\"nv\">$item3<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]);<\/span>\r\n<\/code><\/pre>\n<p>\u5176\u4e2d\u7684\u7b2c\u4e09\u4e2a\u65e0\u6cd5\u901a\u8fc7\u65ad\u8a00\u3002<br \/>\n\u5982\u679c\u5728addChild\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u6dfb\u52a0\u4e86\u6587\u672c\uff0c<br \/>\n\u5947\u602a\u7684\u662f\uff0c\u5b83\u4e0d\u4f1a\u81ea\u52a8\u8f6c\u4e49\u548c\u66ff\u6362\u6389\uff06\u7b26\u53f7\u3002\u8fd9\u5f88\u5947\u602a\u3002<\/p>\n<p>\u7b2c\u4e8c\u70b9\u662f\u4ee5\u4e00\u884c\u4ee3\u7801\u521b\u5efa\u5143\u7d20\u5e76\u8f93\u5165\u6587\u672c\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u9700\u8981\u6ce8\u610f\u7684\u662f\u8fd4\u56de\u503c\u81ea\u7136\u4e0d\u662fSimpleXMLElement\uff0c\u800c\u662f\u6587\u672c\u3002<\/p>\n<p>\u4f7f\u7528$item[0]\u8fdb\u884c\u8f93\u5165\uff0c\u4f7f\u7528$item[0]\u8fdb\u884c\u8f93\u51fa\u6bd4\u8f83\u7a33\u5b9a\u3002<\/p>\n<h1>\u7279\u6027\u8f6c\u4e49<\/h1>\n<p>\u5c5e\u6027\u7684\u8f93\u5165\u6709\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$xml<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">SimpleXMLElement<\/span><span class=\"p\">(<\/span><span class=\"s1\">'&lt;root&gt;&lt;\/root&gt;'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$text<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'\"PHP&amp;XML!\"\\(&gt;_@)\/'<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"cm\">\/*1\u3064\u3081*\/<\/span>\r\n<span class=\"nv\">$item1<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addChild<\/span><span class=\"p\">(<\/span><span class=\"s1\">'item1'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nv\">$item1<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addAttribute<\/span><span class=\"p\">(<\/span><span class=\"s1\">'attr1'<\/span><span class=\"p\">,<\/span><span class=\"nv\">$text<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">assertEquals<\/span><span class=\"p\">(<\/span><span class=\"nv\">$text<\/span><span class=\"p\">,<\/span><span class=\"nv\">$item1<\/span><span class=\"p\">[<\/span><span class=\"s1\">'attr1'<\/span><span class=\"p\">]);<\/span>\r\n\r\n<span class=\"cm\">\/*2\u3064\u3081*\/<\/span>\r\n<span class=\"nv\">$item2<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">addChild<\/span><span class=\"p\">(<\/span><span class=\"s1\">'item2'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nv\">$item2<\/span><span class=\"p\">[<\/span><span class=\"s1\">'attr2'<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$text<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">assertEquals<\/span><span class=\"p\">(<\/span><span class=\"nv\">$text<\/span><span class=\"p\">,<\/span><span class=\"nv\">$item2<\/span><span class=\"p\">[<\/span><span class=\"s1\">'attr2'<\/span><span class=\"p\">]);<\/span>\r\n<\/code><\/pre>\n<p>\u8003\u8651\u5230addChild\u7684\u884c\u4e3a\uff0caddAttribute\u4e5f\u53ef\u80fd\u4f1a\u8f6c\u4e49\u5931\u8d25\uff0c\u4f46\u8fd9\u91cc\u4e24\u8005\u90fd\u4f1a\u6b63\u786e\u8f6c\u4e49\uff0c\u8fd9\u53ef\u80fd\u4f1a\u8ba9\u4f7f\u7528SimpleXML\u7684\u4eba\u611f\u5230\u56f0\u60d1\u3002<\/p>\n<h1>XPath\u7684\u8f6c\u4e49<\/h1>\n<p>\u6ca1\u6709\u5b58\u5728\u3002<br \/>\n\u56e0\u4e3a\u6ca1\u6709\u51c6\u5907\u597d\u51fd\u6570\uff0c\u6240\u4ee5\u4e0d\u80fd\u7b80\u5355\u5730\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u4e5f\u4e0d\u81f3\u4e8e\u5230\u8981\u6b7b\u8981\u6d3b\u7684\u5730\u6b65\u3002<br \/>\nSimpleXML\u7684XPath\u662f1.0\u7248\u672c\uff0c\u6240\u4ee5\u6ca1\u6709\u4e00\u4e2a\u5408\u9002\u7684\u5b9a\u4e49\u5f62\u5f0f\u6765\u8fdb\u884c\u8f6c\u4e49\u3002<\/p>\n<p>\u5199\u4e0b\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff0c\u6700\u7ec8\u4f1a\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$target<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">current<\/span><span class=\"p\">(<\/span><span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">xpath<\/span><span class=\"p\">(<\/span><span class=\"s1\">'.\/haystack\/book[title\/text()=\"'<\/span> <span class=\"mf\">.<\/span> <span class=\"nv\">$needle<\/span><span class=\"mf\">.<\/span> <span class=\"s1\">'\"]'<\/span><span class=\"p\">));<\/span>\r\n<\/code><\/pre>\n<p>\u8ba9\u6211\u4eec\u4f7f\u7528\u5faa\u73af\u9010\u4e00\u8fdb\u884c\u641c\u7d22\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$target<\/span> <span class=\"o\">=<\/span> <span class=\"kc\">null<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">foreach<\/span><span class=\"p\">(<\/span><span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">xpath<\/span><span class=\"p\">(<\/span><span class=\"s1\">'.\/haystack\/book'<\/span><span class=\"p\">)<\/span> <span class=\"k\">as<\/span> <span class=\"nv\">$book<\/span><span class=\"p\">){<\/span>\r\n <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$book<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">title<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]<\/span> <span class=\"o\">===<\/span> <span class=\"nv\">$needle<\/span><span class=\"p\">){<\/span>\r\n   <span class=\"nv\">$target<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$book<\/span><span class=\"p\">;<\/span>\r\n   <span class=\"k\">break<\/span><span class=\"p\">;<\/span>\r\n <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h1>\u7ed3\u675f<\/h1>\n<p>\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u53ef\u4ee5\u901a\u8fc7unset\u6765\u5220\u9664\u5143\u7d20\u548c\u5c5e\u6027\uff0c\u5177\u4f53\u64cd\u4f5c\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$target<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$xml<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">item1<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"cm\">\/*\u5c5e\u6027\u306e\u524a\u9664*\/<\/span>\r\n<span class=\"nb\">unset<\/span><span class=\"p\">(<\/span><span class=\"nv\">$target<\/span><span class=\"p\">[<\/span><span class=\"s1\">'attr1'<\/span><span class=\"p\">]);<\/span>\r\n\r\n<span class=\"cm\">\/*\u30a8\u30ec\u30e1\u30f3\u30c8\u306e\u524a\u9664*\/<\/span>\r\n<span class=\"nb\">unset<\/span><span class=\"p\">(<\/span><span class=\"nv\">$target<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">]);<\/span>\r\n<\/code><\/pre>\n<p>\u8003\u8651\u5230$text\u7684\u5404\u4e2a\u65b9\u9762\uff0c\u53ef\u4ee5\u8bf4SimpleXML\u4ee5\u6570\u7ec4\u7684\u5f62\u5f0f\u5904\u7406XML\u7684\u611f\u89c9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u7531\u4e8ePHP\u7684SimpleXML\u7684\u529f\u80fd\u76f8\u5bf9\u795e\u79d8\uff0c\u56e0\u6b64\u6211\u603b\u7ed3\u4e86\u4e00\u4e0b\u3002 \u6587\u672c\u8282\u70b9\u7684\u8f6c\u4e49 \u5728\u4f7f\u7528SimpleXM [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30923","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u5bf9simplexml\u8fdb\u884c\u8f6c\u4e49\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u5bf9simplexml\u8fdb\u884c\u8f6c\u4e49\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-04-27T22:22:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T13:25:04+00:00\" \/>\n<meta name=\"author\" content=\"\u9038, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u9038, \u79d1\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%af%b9simplexml%e8%bf%9b%e8%a1%8c%e8%bd%ac%e4%b9%89\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/php%e5%af%b9simplexml%e8%bf%9b%e8%a1%8c%e8%bd%ac%e4%b9%89\/\",\"name\":\"[PHP]\u5bf9SimpleXML\u8fdb\u884c\u8f6c\u4e49 - Blog - Silicon 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