{"id":697,"date":"2023-01-07T23:16:09","date_gmt":"2023-01-07T17:46:09","guid":{"rendered":"https:\/\/qwebtechnologies.com\/blog\/?p=697"},"modified":"2024-09-07T23:51:33","modified_gmt":"2024-09-07T18:21:33","slug":"cookies-and-session-in-php","status":"publish","type":"post","link":"https:\/\/qwebtechnologies.com\/blog\/cookies-and-session-in-php\/","title":{"rendered":"How To Create Best Cookies and Session in PHP."},"content":{"rendered":"\n<p>Cookies and Session In PHP, a <strong>cookie<\/strong> is a small piece of data that is stored on the client&#8217;s computer when they visit a website. It is often used to store information that needs to be persisted across multiple pages or requests, such as a user&#8217;s login status or preferences.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2023\/01\/Cookies-and-Session-in-PHP.jpg\" alt=\"Cookies and Session in PHP\" class=\"wp-image-702\" style=\"width:600px;height:300px\"\/><\/figure>\n<\/div>\n\n\n<p>A <strong>session<\/strong>, on the other hand, is a way to store data on the server side that is specific to a user&#8217;s session. When a user visits a website, the server creates a new session for that user and generates a unique session ID that is sent to the client&#8217;s browser in the form of a cookie. Any data that the server wants to store and associate with the user&#8217;s session can then be stored in the session.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"https:\/\/qwebtechnologies.com\/blog\/login-system-using-php-html\/\" target=\"_blank\" rel=\"noreferrer noopener\">Read More Related.<\/a><\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#create-cookies-and-session-in-php\">Create Cookies and Session in PHP.<\/a><\/li><li><a href=\"#difference-between-cookies-and-session-in-php\">Difference between cookies and session in php<\/a><\/li><li><a href=\"#some-examples-of-cookies-and-session-in-php\">Some Examples of cookies and session in php<\/a><\/li><li><a href=\"#how-to-create-cookies-in-php\">how to create cookies in PHP<\/a><\/li><li><a href=\"#how-to-create-session-in-php\">how to create  session in PHP<\/a><\/li><li><a href=\"#how-to-destroy-session-in-php\">how to destroy session in php<\/a><\/li><li><a href=\"#faq\">FAQ? <\/a><ul><li><a href=\"#faq-question-1673109696235\">in PHP where session variable values are stored MCQ<\/a><\/li><li><a href=\"#faq-question-1673110081083\">How to create session in PHP<\/a><\/li><li><a href=\"#faq-question-1673110400684\">How to destroy session in php<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"create-cookies-and-session-in-php\"><strong>Create Cookies and Session in PHP.<\/strong><\/h2>\n\n\n\n<p><strong>Step -1 To set a cookie in PHP, you can use the <code>setcookie<\/code> function. For example:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>setcookie('my_cookie', 'value');\n<\/code><\/pre>\n\n\n\n<p><strong>Step -2 To retrieve the value of a cookie, you can use the <code>$_COOKIE<\/code> superglobal. For example:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo $_COOKIE&#91;'my_cookie'];\n<\/code><\/pre>\n\n\n\n<p><strong>Step -1 To start a new session in PHP, you can use the <code>session_start<\/code> function. For example:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>session_start();\n<\/code><\/pre>\n\n\n\n<p><strong>Step -2 To store data in the session, you can use the <code>$_SESSION<\/code> superglobal. For example:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>$_SESSION&#91;'my_session_variable'] = 'value';\n<\/code><\/pre>\n\n\n\n<p><strong>Step -3 To retrieve the value of a session variable, you can use the <code>$_SESSION<\/code> superglobal. For example:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo $_SESSION&#91;'my_session_variable'];\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"difference-between-cookies-and-session-in-php\"><strong>Difference between cookies and session in php<\/strong><\/h2>\n\n\n\n<p><strong>Here are the main differences between cookies and sessions in PHP:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Storage location:<\/strong> <a href=\"https:\/\/www.w3schools.com\/php\/php_cookies.asp\" target=\"_blank\" rel=\"noreferrer noopener\">Cookies<\/a> are stored on the client&#8217;s computer, while session data is stored on the server.<\/li>\n\n\n\n<li><strong>Persistence:<\/strong> Cookies are persisted across multiple requests, while session data is only available during the lifetime of the session (usually until the user closes their browser).<\/li>\n\n\n\n<li><strong>Size:<\/strong> Cookies are limited in size (usually to 4KB or less), while there is no inherent limit to the amount of data that can be stored in a session.<\/li>\n\n\n\n<li><strong>Security: <\/strong>Cookies are stored on the client&#8217;s computer and can be accessed or modified by the client, while session data is stored on the server and is generally more secure.<\/li>\n<\/ol>\n\n\n\n<p><strong>Here is a summary of the main differences between cookies and sessions:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><\/td><td><strong>Cookies<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Session<\/strong>s<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Storage location<\/strong><\/td><td>Client&#8217;s computer<\/td><td class=\"has-text-align-center\" data-align=\"center\">Server<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Persistence<\/strong><\/td><td>Persisted across multiple requests<\/td><td class=\"has-text-align-center\" data-align=\"center\">Only available during the lifetime of the session<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>Size<\/strong><\/td><td>Limited in size (usually to 4KB or less)<\/td><td class=\"has-text-align-center\" data-align=\"center\">No inherent limit to the amount of data that can be stored<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Security<\/td><td>Stored on the client&#8217;s computer and can be accessed or modified by the client<\/td><td class=\"has-text-align-center\" data-align=\"center\">Stored on the server and generally more secure<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Cookies and Session in PHP<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"some-examples-of-cookies-and-session-in-php\"><strong>Some Examples of cookies and session in php<\/strong><\/h2>\n\n\n\n<p>Here is an example of how to create new <strong>cookies and session<\/strong> in PHP:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-to-create-cookies-in-php\"><strong>how to create cookies in PHP<\/strong><\/h2>\n\n\n\n<p>To create a <strong>cookie<\/strong> in PHP, you can use the <code>setcookie<\/code> function. The <code><strong>setcookie<\/strong><\/code> the function takes at least two parameters: the name of the cookie and its value.<\/p>\n\n\n\n<p><strong>Here is an example of how to create a cookie in PHP:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Set a cookie\nsetcookie('my_cookie', 'value');\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>You can also specify additional optional parameters when setting a <strong>cookie<\/strong>. <\/p>\n\n\n\n<p><strong>For example,<\/strong> you can specify an expiration time for the cookie using the <code>expire<\/code> parameter. If you do not specify an expiration time, the cookie will expire at the end of the current session (when the browser is closed). You can also specify a path for the cookie using the <code>path<\/code> parameter, which determines which pages on your website will have access to the cookie.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Set a cookie that expires in one hour\n$expiration_time = time() + 3600;\nsetcookie('my_cookie', 'value', $expiration_time, '\/');\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>To retrieve the value of a cookie, you can use the<strong> <code>$_COOKIE<\/code><\/strong> superglobal. The <code><strong>$_COOKIE<\/strong><\/code> superglobal is an array that contains the values of all cookies sent by the client.<\/p>\n\n\n\n<p><strong>For example,<\/strong> to retrieve the value of the <code><strong>my_cookie<\/strong><\/code> cookie that we set above, you can do the following:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>echo $_COOKIE&#91;'my_cookie'];\n<\/code><\/pre>\n\n\n\n<p>It&#8217;s important to note that cookies are stored on the client&#8217;s computer, which means that you have no control over what the client does with the cookie. The client can choose to disable cookies, delete cookies, or modify the value of a cookie. Therefore, it&#8217;s generally not a good idea to store sensitive information in cookies.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-to-create-session-in-php\"><strong>how to create  session in PHP<\/strong><\/h2>\n\n\n\n<p>To create a new session in PHP, you can use the <code>session_start<\/code> function. This function must be called at the beginning of every page that needs to access session data.<\/p>\n\n\n\n<p><strong>Here is an example of how to create a new session in PHP:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Start the session\nsession_start();\n\n\/\/ Store some data in the session\n$_SESSION&#91;'my_session_variable'] = 'value';\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>The <strong>session_start <\/strong>function will start a new session, or resume an existing session if one already exists. It will also send a cookie to the client&#8217;s browser containing the session ID, which is used to identify the user&#8217;s session on the server.<\/p>\n\n\n\n<p>Once a session has been started, you can store and retrieve data in the session using the <code><strong>$_SESSION<\/strong><\/code> superglobal. The <code><strong>$_SESSION<\/strong><\/code> superglobal is an array that can be used to store any data that you want to associate with the user&#8217;s session.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"how-to-destroy-session-in-php\"><strong>how to destroy session in php<\/strong><\/h2>\n\n\n\n<p>To destroy a session in PHP, you can use the <code><strong>session_destroy<\/strong><\/code> function. This function will destroy all data associated with the current session.<\/p>\n\n\n\n<p><strong>Here is an example of how to destroy a session in PHP:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Start the session\nsession_start();\n\n\/\/ Destroy the session\nsession_destroy();\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>It&#8217;s important to note that the <code><strong>session_destroy<\/strong><\/code> function only destroys the data associated with the current session, not the session itself. To start a new session, you will need to call the <code><strong>session_start<\/strong><\/code> function again.<\/p>\n\n\n\n<p><strong>Alternatively, you can unset all variables in the session by unsetting the <code>$_SESSION<\/code> superglobal:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Start the session\nsession_start();\n\n\/\/ Unset all session variables\n$_SESSION = array();\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>This will remove all data from the session, but the session itself will still exist. To completely destroy the session and the <strong>session cookie<\/strong>, you can use the <strong><code>session_unset<\/code> <\/strong>and <code><strong>session_destroy<\/strong><\/code> functions in combination with the <code><strong>session_regenerate_id<\/strong><\/code> function, like this:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/\/ Start the session\nsession_start();\n\n\/\/ Unset all session variables\nsession_unset();\n\n\/\/ Destroy the session\nsession_destroy();\n\n\/\/ Regenerate the session ID\nsession_regenerate_id(true);\n\n?&gt;\n<\/code><\/pre>\n\n\n\n<p>This will unset all session variables, destroy the session, and regenerate the session ID, effectively starting a new session.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\"><strong>FAQ? <\/strong><\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1673109696235\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">in PHP where session variable values are stored MCQ<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>The session data is stored in a file on the server, or in a database on the server, depending on how PHP is configured. By default, PHP stores session data in files on the server, but you can also configure it to use a database, such as MySQL, to store session data. The session data is stored in a file on the server, or in a database on the server, depending on how PHP is configured. By default, PHP stores session data in files on the server, but you can also configure it to use a database, such as MySQL, to store session data.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1673110081083\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">How to create session in PHP<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>To create a new session in PHP, you can use the <code>session_start<\/code> function. This function must be called at the beginning of every page that needs to access session data.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1673110400684\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">How to destroy session in php<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>To destroy a session in PHP, you can use the <code>session_destroy<\/code> function. This function will destroy all data associated with the current session. <\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<p><strong>Read more Latest Post.<\/strong><\/p>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"128\" height=\"72\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/Java-Frameworks.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"Java Frameworks\" style=\"\" srcset=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/Java-Frameworks.jpg 1280w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/Java-Frameworks-768x432.jpg 768w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/Java-Frameworks-150x84.jpg 150w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/qwebtechnologies.com\/blog\/java-frameworks\/\">The Ultimate Guide to the Top 10 Java Frameworks for 2024.<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"128\" height=\"72\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/javascript-location-reload-true.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"javascript:location.reload(true)\" style=\"\" srcset=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/javascript-location-reload-true.jpg 1280w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/javascript-location-reload-true-768x432.jpg 768w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/javascript-location-reload-true-150x84.jpg 150w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/qwebtechnologies.com\/blog\/javascript-location-reload-true\/\">A Comprehensive Guide to Using javascript:location.reload(true) in Web Development<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"128\" height=\"72\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/php-explode-multiple-separators.jpg\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"php explode multiple separators\" style=\"\" srcset=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/php-explode-multiple-separators.jpg 1280w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/php-explode-multiple-separators-768x432.jpg 768w, https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/10\/php-explode-multiple-separators-150x84.jpg 150w\" sizes=\"auto, (max-width: 128px) 100vw, 128px\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/qwebtechnologies.com\/blog\/php-explode-multiple-separators\/\">PHP explode Multiple Separators: A Comprehensive Guide.<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/09\/Copy-Constructor-in-Java-e1727713503548.webp\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"Copy Constructor in Java\" style=\"\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/qwebtechnologies.com\/blog\/copy-constructor-in-java\/\">Copy Constructor in Java: A Complete Guide<\/a><\/li>\n<li><div class=\"wp-block-latest-posts__featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"96\" src=\"https:\/\/qwebtechnologies.com\/blog\/wp-content\/uploads\/2024\/09\/php-project-topics-e1727713601441.webp\" class=\"attachment-thumbnail size-thumbnail wp-post-image\" alt=\"PHP Project Topics\" style=\"\" \/><\/div><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/qwebtechnologies.com\/blog\/php-project-topics\/\">50 Ultimate PHP Project Topics to Elevate Your Development Skills.<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Cookies and Session In PHP, a cookie is a small piece of data that is stored on the client&#8217;s computer when they visit a website. It is often used to store information that needs to be persisted across multiple pages or requests, such as a user&#8217;s login status or preferences. A session, on the other &#8230; <a title=\"How To Create Best Cookies and Session in PHP.\" class=\"read-more\" href=\"https:\/\/qwebtechnologies.com\/blog\/cookies-and-session-in-php\/\" aria-label=\"Read more about How To Create Best Cookies and Session in PHP.\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":702,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[],"class_list":["post-697","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php-tutorials"],"_links":{"self":[{"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/comments?post=697"}],"version-history":[{"count":7,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/697\/revisions"}],"predecessor-version":[{"id":1099,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/697\/revisions\/1099"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/media\/702"}],"wp:attachment":[{"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/media?parent=697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/categories?post=697"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qwebtechnologies.com\/blog\/wp-json\/wp\/v2\/tags?post=697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}