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Sessions in PHP are easy to learn and set up, first of all you need to make sure you use the function session_start() at the start of each script to make sure the sessions work.
Then all you need to do is the following to store information in sessions:
<?php
// allow sessions to work on script
session_start();
// set up a session called my number
$_SESSION['my_number'] = 1;
?>
That's all you need to do to set up and store data in a session. Now if you want to delete a session you will need to use the unset() function like shown below:
<?php
unset($_SESSION['my_number']);
?>
To destroy all sessions in one go you can call the session_destroy() function. This will save you some time.
<?php
session_destroy();
?>
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∙ 14y ago
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What is the purpose of a PHP session?
A PHP session serves quite a few purposes. PHP sessions store data that the web application developer would like to have preserved across the different page loads.
What is a php session?
A PHP session is a concept where specific variables (and their respective values) are carried throughout a user's viewing of a PHP-driven website. These sessions can be initialized and continued using the session_start() function. The session values are stored in the $_SESSION global variable. For more information, see the php.net documentation of session functions.
Why we use javascript as we have a powerful scripting language php?
First of all, PHP is server side, Javascript is client side. You cannot detect mouse gestures or any clicks with PHP the same way you cannot read a file or modify it or process a form (unless you use AJAX of course). Also, although I love PHP, and it has useful extensions such as the GD library, PHP is not a very good language. Overall we use javascript and PHP because they are used for two completely different things.
What is syntax in php?
We can use php tags in different ways. <?php //php code to be written here ?> OR <? //php code ?> This tag will not work when we using editors such as macromedia dreamweaver. OR < script language="php"> //php code </script>
What character allows you to concatenate strings in PHP?
To concatenate strings in PHP, you use the . (dot) character. For example: $str = "String1" . "String2";
What is the purpose of a PHP session?
A PHP session serves quite a few purposes. PHP sessions store data that the web application developer would like to have preserved across the different page loads.
How do you update and delete data from PHP sessions?
To update/delete data from a session all you need to do is the following: <?php // to update the session, you just overwrite it like a normal variable $_SESSION['name'] = "pizza"; // to delete a sessions data you can do this $_SESSION['name'] = ""; ?>
How can you create a language converter for website in English to Spanish in PHP?
You can use PHP to create a language converter for a website by storing language translations in a database or files, and then using PHP to dynamically switch the content based on the selected language. You can create language files for each language, and then use PHP sessions or cookies to store the user's language preference across pages. Finally, use PHP functions to display the content in the appropriate language based on the user's selection.
What is the use of a question mark in php?
It is used to tell the sever to use the PHP parser. To begin php you must use <?php, and to end it, it is ?>.
How do you use PHP in HTML?
You can't use PHP in an HTML document, but you can use HTML in PHP script.
How do you declare session in javascript?
You can't. Sessions are a server-side technology. To properly implement a session, you have to use a server-side language like PHP, ASP, or Ruby.
How do you create a webmail application with PHP?
Creating a webmail application in PHP involves using the related POP3 or IMAP libraries to connect to the mail system and cookies/sessions to save authentication information.
What is the default extension that most Web servers use to process php scripts?
PHP files extension is .php
Why should you use PHP and not JSP?
Firstly, this is wrong question. The right one would be WHEN should you use PHP, not JSP? or, WHEN should you use PHP and WHEN JSP?
How do you enable PHP sessions?
Find your php.ini file (which holds all the settings for PHP, and how it should work).Under the "sessions" section, find the directive "session.save_hander." Unless you're directed otherwise, and you want sessions enabled, this directive should be set to the string "files."If session problems arise, find the directive "session.save_path," and make sure the current path it's set to actually exists (and that PHP can write to it). PHP does not create this directory; you need to.Still not working? Go to the directory path that session files are saved in (as noted in the "session.save_path" directive) and see if there are session files being created when you start a session in a PHP script. If they are, then your scripts are most likely the problem. If the newly created sessions are empty, make sure that you are actually putting data in them, and that you're not resetting the $_SESSION global variable anywhere.If they aren't, then it may help to reinstall PHP, or get further assistance elsewhere.
How do you use XML in PHP?
PHP 5 has a XML parser called SimpleXML that you could use.
How do you create a web mail script using PHP?
You can use phpMailer() Or, you can use mail() PHP function to send emails via PHP script.
