What will be the output of $a and $b once code bellow is executed?
PHP | output of $a and $b once this code $a = '1'; $b = &$a; $b = "2$b" executed; Both $a and $b will output a string "21". Because the statement $b = &$a; sets …
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 …
What will be the value of $x when given statement execute?
PHP | Statement $x = 3 + "15%" + "$25"? The correct answer is 18. Here’s why: PHP is a loosely typed language, therefore it does automatic type conversion based on the context in which …
Add bar chart in web page
Chart.js | Add bar chart in the webpage This is a simple example of using Chart.js to create a bar chart on the webpage. Step 1: Create a basic HTML file called "chart.html" <!DOCTYPE html> …
Prevent page caching in php using header() function
PHP | header() function By sending the headers bellow, we change the browser’s default cache settings. We can override any of those settings and force the browser to not cache. In this code we just …
What are the different storage engine present in MySQL?
There are 5 different types of storage engine present in MySql. MyISAM Heap Merge INNO DB ISAM MyISAM is the default storage engine for MySQL
What are data types in php?
PHP | What are data types in PHP? Variables can store data of different types, and different data types can do different things. PHP supports the following data types: String Integer Float (floating-point numbers - …
How can we find the number of rows in a table using MySQL?
MySQL | Find the number of rows in a table We can use the below query to count the number of rows in a table >SELECT COUNT(*) FROM table_name;
How can we remove duplicate value from an array in php?
PHP | Remove duplicate value from an array Duplicate value can remove from an array by using the array_unique function. If two or more array values are the same, the first appearance will be kept …
Unset function in PHP
PHP | unset() function The function unset() is an inbuilt function in in php which is use to delete variable. unset($var) or void unset ( mixed $var [, mixed $... ] ) Note: we can …
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 …
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 …
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 …
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 branch command to create, list and delete
Git | Git branch command to create, list, and delete git branch command is used to create a new branch, list all branches, and delete a branch. Branches allow developers to work on the same project …