this in PHP class this in PHP class: In the previous tutorial, we have seen how to create a class, objects, properties, and methods. We have learns how a class can be used to to make an object which is a combination of properties and methods. We have created two objects $iphone and $mobile of … Read more
What is Object Oriented PHP? Object Oriented PHP: Before looking into what is object oriented PHP, let’s see some background. Look around you! Everything around you is an object. Even you yourself is an object. Every object has a specific type. Like you, a male or a female is of type Human. The chair you are … Read more
In this section, you will get PHP Programming Assignments for practice. Try to solve them and run to get the correct output. Follow the approach of writing program using proper steps to solve. Read assignments program more than once before starting. Write down your understandings in the sequence of steps. Write down the algorithm. Write … Read more
Simple pagination in PHP with MySqli example. Hello all, In this tutorial, I am going to share how we can implement Simple pagination in PHP with MySqli example. But first of all, let’s see what actually is pagination and why we need it in our application. Assume that you are having thousands of record in … Read more
Date and time function in PHP You may require a date and time functionality in almost every application you make. You will learn about a date and time function in PHP here. As date and time are a very common and essential part of our day to day life, you should know how you can … Read more
Many times you find that while coding you get errors or warnings in the output. If you don’t want to show those errors in your output or for suppressing errors in PHP, you can use two methods. Adding @ symbol before the line where you think the error may occur. Adding function error_reporting(0) before/top of … Read more
This chapter is about php print_r var_dump functions. These functions will generate output somewhat same but having few differences. Let’s see in details about PHP print_r var_dump functions: bool print_r(mixed val): print_r is used to print values in the human-readable form. The value can be a string, integer, double, array or object. If we use print_r to … Read more
Let’s see other MySql commands in PHP. 1. mysql_num_rows(): It returns the number of rows resulting from mysql_query() output. Example: <?php $query = “select * from employees”; $result = mysql_query($query, $con); if(!$result) { die(‘Error getting table data’, mysql_error); } echo “Number of Employees in database – “.mysql_num_rows($result); ?> 2. mysql_result(): This function will return … Read more
For deleting data from a table, you can again use the same mysql_query function. You need to pass MySQL delete query in this function. Example: <?php $query = “delete from employees where id = 3”; $result = mysql_query($query, $con); if(!$result) { die(“Error deleting data”,mysql_error()); } echo “Data deleted successfully”; ?> You can use all the other SQL … Read more
You can update table data by simply using update query in mysql_query function, just like other queries. Example: <?php require_once(“dbconnection.php”); $query = “update employees set name=”andy” where id = 2″; $result = mysql_query($query, $con); if(!$result) { die(“Error updatig data”,mysql_error()); } echo “Data updated successfully”; ?> As you see in above example using a function … Read more
