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 …

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

PHP | Find the number of rows in a result set Bellow code is use for the same $sql = "SELECT * FROM table1"; $result = mysql_query($sql, $db_link); $num_rows = mysql_num_rows($result); echo $num_rows;  

Enable errors in PHP There are two ways to enable error reporting in your PHP scripts: 1. You can add the following function in the the script: error_reporting(E_ALL); 2. You can add the following option in …

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 …

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 …

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 …

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 …

PHP | Inheritance PHP mainly supports two types of inheritance: Single inheritance Multilevel inheritance

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 …

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 …

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 …

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 …

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 …

PHP | max_execution_time directive in php.ini file By changing the value of  max_execution_time in the php.ini file max_execution_time = 30; // in second   By default, the maximum execution time for PHP scripts is set to …