What are superglobal/global variables ?
PHP | What are superglobal/global variables? Superglobal is out of scope limitation. These variables can be accessed from any function, class, or file without doing anything special such as declaring any global variable, etc. These …
What is difference between require() and include() ?
What is difference between require() and include() ? The require() function is identical to include(), except that it handles errors differently. If an error occurs, the include() function generates a warning, but the script will …
What is difference between require() and require_once() ?
PHP | require() and require_once() Both require() and require_once() is use to include a file but the difference is required_once() function checks if the file already included or not where require() function does not check. …
How to avoid errors in PHP ?
PHP | How to avoid errors in PHP? We can use PHP inbuilt function error_reporting(0) to avoid all errors in PHP file. <?php error_reporting(0); ?>
How we can increase default timeout of session ?
PHP | Increase default session timeout The "session.gc_maxlifetime" is use to modify the default timout of session. server should keep session data for AT LEAST 1 hour by using the below code. It increase session …
How do you define a constant in php?
Constant in PHP The define() function is used to defining a constant in PHP define("GREETING", "Welcome to StudyZone4U.com"); Constants are like variables except that once they are defined they cannot be changed or undefined …
What is the difference between explode and split?
The explode() and split() both function is use to split a string into an array. But the difference is explode() function splits a string into array by string where as Split function splits string into …
What is the difference between $name and $$name?
$name and $$name both are variables but with a single difference that is $name is just a normal php variable where as $$name is known as reference variable. It allow you to use $name variable's …
What is robots.txt file?
Googlebot | What is a robots.txt file? A robots.txt is a simple text file that can be created by a notepad editor. This file is used for search engines, which provide instructions to search engines on how …
What is JQuery?
jQuery: jQuery is a fast, small, and feature-rich JavaScript library. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude …
printThis.jpg
Print html page with css
JQuery | Print HTML page with CSS printThis is a jquery library which can print specific or multiple DOM element without losing css style. Features Print specific & multiple DOM elements Preserve page CSS/styling or add …
How to remove index.php in codeigniter?
Codeigniter | Remove index.php from URL in Codeigniter? The file index.php is the root file of Codeigniter. it contains setting code for CodeIgniter. So, when we redirect to other pages the URL comes with index.php …
How to Add a Cron Job via SSH?
SSH | Add a Cron Job A corn is a time based job scheduler which runs automatically on unix-like server. It is use to schedule jobs or tasks to runs at fixted date, time or …
SQL Update statement
SQL Update statement The UPDATE statement is used to update the records of an existing table in a database. We can update single as well as multiple columns using SQL update statement. The basic syntax …
Add number of days to a date in php
PHP | Add numbers of days to a date Simple and easy way to add some days in a given date using strtotime() function. <?php $p_date = "2019-01-10"; echo date('Y-m-d', strtotime($p_date . ' + 1 days')); echo …