{"id":5219,"date":"2022-08-27T08:13:51","date_gmt":"2022-08-27T02:43:51","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-update-php-variable-on-click-of-html-class-closed\/"},"modified":"2022-08-27T08:13:51","modified_gmt":"2022-08-27T02:43:51","slug":"solved-update-php-variable-on-click-of-html-class-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-update-php-variable-on-click-of-html-class-closed\/","title":{"rendered":"[Solved] update PHP variable on click of html class [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-16900173\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"16900173\" data-parentid=\"16899455\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>First things first, most of your question is not possible in the way you want it done. Specifically incrementing a variable in PHP such that you have <code>$list[4] += 10<\/code>. I say this because when this script is run this won&#8217;t exist anymore, you&#8217;d have to load it in from where ever you happen to be storing data (assuming a DB).<\/p>\n<p>So, a short example of what you&#8217;re trying to achieve you&#8217;ll need a couple of files.<\/p>\n<ul>\n<li><code>index.php<\/code> &#8211; This is where your code happens that renders the page with the links on it.<\/li>\n<li><code>link_clicked.php<\/code> &#8211; This is called when a link is clicked.<\/li>\n<\/ul>\n<p>You&#8217;ll add need this basic Javascript in your code (it uses jQuery because you mentioned it in your question). I&#8217;ve broken this snippet into many pieces which is not how you&#8217;d normally write or see jQuery written to explain what is going on.<\/p>\n<pre><code>$(function() {\n  \/\/ Select all elements on the page that have 'URL' class.\n  var urls = $(\".URL\");\n  \/\/ Tell the elements to perform this action when they are clicked.\n  urls.click(function() {\n    \/\/ Wrap the current element with jQuery.\n    var $this = $(this);\n    \/\/ Fetch the 'href' attribute of the current link\n    var url = $this.attr(\"href\");\n    \/\/ Make an AJAX POST request to the URL '\/link_clicked.php' and we're passing\n    \/\/ the href of the clicked link back.\n    $.post(\"\/link_clicked.php\", {url: url}, function(response) {\n      if (!response.success)\n        alert(\"Failed to log link click.\");\n    });\n  });\n});\n<\/code><\/pre>\n<p>Now, what should our PHP look like to handle this?<\/p>\n<pre><code>&lt;?php\n\n\/\/ Tell the requesting client we're responding with JSON\nheader(\"Content-Type: application\/json\");\n\n\/\/ If the URL was not passed back then fail.\nif (!isset($_REQUEST[\"url\"]))\n  die('{\"success\": false}'); \n\n$url = $_REQUEST[\"url\"];\n\n\/\/ Assume $dbHost, $dbUser, $dbPass, and $dbDefault is defined\n\/\/ elsewhere. And open an connection to a MySQL database using mysqli\n$conn = new mysqli($dbHost, $dbUser, $dbPass, $dbDefault);\n\n\/\/ Escape url for security\n$url = conn-&gt;real_escape_string($url);\n\n\/\/ Try to update the click count in the database, if this returns a\n\/\/ falsy value then we assume the query failed.\nif ($conn-&gt;query(\"UPDATE `link_clicks` SET `clicks` = `clicks` + 1 WHERE url=\"$url\";\")) \n  echo '{\"success\": true}';\nelse\n  echo '{\"success\": false}';\n\n\/\/ Close the connection.\n$conn-&gt;close(); \n\n\/\/ end link_clicked.php\n<\/code><\/pre>\n<p>This example is simplistic in nature and uses some unrecommended methods for performing tasks. I&#8217;ll leave finding how to go about doing this properly per your requirements up to you.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved update PHP variable on click of html class [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] First things first, most of your question is not possible in the way you want it done. Specifically incrementing a variable in PHP such that you have $list[4] += 10. I say this because when this script is run this won&#8217;t exist anymore, you&#8217;d have to load it in from where ever you happen &#8230; <a title=\"[Solved] update PHP variable on click of html class [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-update-php-variable-on-click-of-html-class-closed\/\" aria-label=\"More on [Solved] update PHP variable on click of html class [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[333,388,339],"class_list":["post-5219","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript","tag-jquery","tag-php"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] update PHP variable on click of html class [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-update-php-variable-on-click-of-html-class-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] update PHP variable on click of html class [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] First things first, most of your question is not possible in the way you want it done. Specifically incrementing a variable in PHP such that you have $list[4] += 10. I say this because when this script is run this won&#8217;t exist anymore, you&#8217;d have to load it in from where ever you happen ... 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