Prevent page caching in php using header() function
PHP | header() function By sending the headers bellow, we change the browser’s default cache settings. We can override any of those settings and force the browser to not cache. In this code we just …
What are the different storage engine present in MySQL?
There are 5 different types of storage engine present in MySql. MyISAM Heap Merge INNO DB ISAM MyISAM is the default storage engine for MySQL
What are scopes of variable in php?
PHP | What are the scopes of variables in PHP? Scopes define the visibility of a variable. In PHP, variables can be declared anywhere in the script. The scope of a variable is the part …
Add bar chart in web page
Chart.js | Add bar chart in the webpage This is a simple example of using Chart.js to create a bar chart on the webpage. Step 1: Create a basic HTML file called "chart.html" <!DOCTYPE html> …
How can we remove duplicate value from an array in php?
PHP | Remove duplicate value from an array Duplicate value can remove from an array by using the array_unique function. If two or more array values are the same, the first appearance will be kept …
How can we find the number of rows in a table using MySQL?
MySQL | Find the number of rows in a table We can use the below query to count the number of rows in a table >SELECT COUNT(*) FROM table_name;
Unset function in PHP
PHP | unset() function The function unset() is an inbuilt function in in php which is use to delete variable. unset($var) or void unset ( mixed $var [, mixed $... ] ) Note: we can …
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 …
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 …
Automatically change the html element size using css.
CSS | Fluid typography Changing size of text, image, div or any html element automatically without using any jquery or media queries. It is a fluid type technique that doesn't require any JavaScript. Using viewport …
Print Triangle pyramid pattern in python
Python | Print Triangle pyramid pattern This is an example of how to print the Triangle pyramid pattern. It takes an input number from the user to print the number of rows for the pattern. n …
Git add to add files to git
Git add | add files to git This command adds the working directory changes to the staging area. It allows to include the updates to a particular file in the next commit. Git add doesn't affect …
How to refresh a page with jquery?
Jquery | Location reload() Method | Refresh a page The Location.reload() method reloads the current URL. Syntax location.reload(forceGet) The Location.reload() method reloads the current URL. By default, the value of forceGet is false which …
Compare timestamp with date only
SQL | Compare timestamp with date only Timestamp holds Date and Time both with 19 characters. To filter table record with the only date parameter can be achieved by SQL DATE() function. Consider the Employee table …
What type of inheritance supported by php?
PHP | Inheritance PHP mainly supports two types of inheritance: Single inheritance Multilevel inheritance