{"id":3947,"date":"2024-03-13T07:42:59","date_gmt":"2024-03-13T07:42:59","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-ajax-used-in-php\/"},"modified":"2025-07-30T23:16:25","modified_gmt":"2025-07-30T23:16:25","slug":"how-is-ajax-used-in-php","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-ajax-used-in-php\/","title":{"rendered":"PHP AJAX Tutorial: How to Use AJAX in PHP"},"content":{"rendered":"<p>Here is how you can use AJAX in PHP:<\/p>\n<ol>\n<li>Create a JavaScript function that includes AJAX requests, for example:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">loadData<\/span>(<span class=\"hljs-params\"><\/span>) {\r\n    <span class=\"hljs-keyword\">var<\/span> xhttp = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">XMLHttpRequest<\/span>();\r\n    xhttp.<span class=\"hljs-property\">onreadystatechange<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\"><\/span>) {\r\n        <span class=\"hljs-keyword\">if<\/span> (<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">readyState<\/span> == <span class=\"hljs-number\">4<\/span> &amp;&amp; <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">status<\/span> == <span class=\"hljs-number\">200<\/span>) {\r\n            <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">\"result\"<\/span>).<span class=\"hljs-property\">innerHTML<\/span> = <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">responseText<\/span>;\r\n        }\r\n    };\r\n    xhttp.<span class=\"hljs-title function_\">open<\/span>(<span class=\"hljs-string\">\"GET\"<\/span>, <span class=\"hljs-string\">\"ajax_data.php\"<\/span>, <span class=\"hljs-literal\">true<\/span>);\r\n    xhttp.<span class=\"hljs-title function_\">send<\/span>();\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Data retrieved using AJAX<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">&lt;?php<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u8fde\u63a5\u5230\u6570\u636e\u5e93 \u6216 \u6267\u884c\u5176\u4ed6\u64cd\u4f5c<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u67e5\u8be2\u6570\u636e<\/span>\r\n<span class=\"hljs-comment\">\/\/ \u8fd4\u56de\u6570\u636e<\/span>\r\n<span class=\"hljs-keyword\">echo<\/span> <span class=\"hljs-string\">\"Data retrieved from server\"<\/span>;\r\n<span class=\"hljs-meta\">?&gt;<\/span>\r\n<\/code><\/pre>\n<ol>\n<li>Call a JavaScript function in an HTML file and display the result.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">&lt;!DOCTYPE <span class=\"hljs-keyword\">html<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">html<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">head<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">title<\/span>&gt;<\/span>AJAX Example<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">title<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">script<\/span>&gt;<\/span><span class=\"language-javascript\">\r\n        <span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">loadData<\/span>(<span class=\"hljs-params\"><\/span>) {\r\n            <span class=\"hljs-keyword\">var<\/span> xhttp = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">XMLHttpRequest<\/span>();\r\n            xhttp.<span class=\"hljs-property\">onreadystatechange<\/span> = <span class=\"hljs-keyword\">function<\/span>(<span class=\"hljs-params\"><\/span>) {\r\n                <span class=\"hljs-keyword\">if<\/span> (<span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">readyState<\/span> == <span class=\"hljs-number\">4<\/span> &amp;&amp; <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">status<\/span> == <span class=\"hljs-number\">200<\/span>) {\r\n                    <span class=\"hljs-variable language_\">document<\/span>.<span class=\"hljs-title function_\">getElementById<\/span>(<span class=\"hljs-string\">\"result\"<\/span>).<span class=\"hljs-property\">innerHTML<\/span> = <span class=\"hljs-variable language_\">this<\/span>.<span class=\"hljs-property\">responseText<\/span>;\r\n                }\r\n            };\r\n            xhttp.<span class=\"hljs-title function_\">open<\/span>(<span class=\"hljs-string\">\"GET\"<\/span>, <span class=\"hljs-string\">\"ajax_data.php\"<\/span>, <span class=\"hljs-literal\">true<\/span>);\r\n            xhttp.<span class=\"hljs-title function_\">send<\/span>();\r\n        }\r\n    <\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">script<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">head<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">body<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">button<\/span> <span class=\"hljs-attr\">onclick<\/span>=<span class=\"hljs-string\">\"loadData()\"<\/span>&gt;<\/span>Load Data<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">button<\/span>&gt;<\/span>\r\n    <span class=\"hljs-tag\">&lt;<span class=\"hljs-name\">div<\/span> <span class=\"hljs-attr\">id<\/span>=<span class=\"hljs-string\">\"result\"<\/span>&gt;<\/span><span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">div<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">body<\/span>&gt;<\/span>\r\n<span class=\"hljs-tag\">&lt;\/<span class=\"hljs-name\">html<\/span>&gt;<\/span>\r\n<\/code><\/pre>\n<p>This allows you to use AJAX to fetch data from the server and update the content on the page.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here is how you can use AJAX in PHP: Create a JavaScript function that includes AJAX requests, for example: function loadData() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 &amp;&amp; this.status == 200) { document.getElementById(&#8220;result&#8221;).innerHTML = this.responseText; } }; xhttp.open(&#8220;GET&#8221;, &#8220;ajax_data.php&#8221;, true); xhttp.send(); } Data retrieved using AJAX &lt;?php [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[2964,2966,2965,2963,326],"class_list":["post-3947","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-ajax-tutorial","tag-dynamic-content","tag-javascript-php","tag-php-ajax","tag-web-development"],"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 AJAX Tutorial: How to Use AJAX in PHP - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn PHP AJAX integration with step-by-step guide, code examples, and dynamic content implementation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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