How to access global variable in php ?

If you are in a function on class method scope, you can gain access to a global variable by using a global keyword.$x = 5; function myFunc() { global $x; echo $x; }Remeber that using globals usually isn't a good idea. Better idea would be divide your globals by categories/modules and store it in static variables of some classes.

Comments

Post a Comment

Popular posts from this blog

How to show only month and year fields in android Date-picker?

Image
Android default DatePicker show day/month/year fields but you have to customize this DatePicker as your requirements. Suppose that you want to show only month and year fields in android datepicker . To do this, you have to customize the Dialog DatePicker source code but it is not an easy task. In this tutorial I will show you a tricky way to solve this problem. Lets see how to show only month and year field in android DatePicker as a dialog.   Step to show only month and year fields in android date-picker: Some days ago I got this same problem and here I am trying to explain this in a sequential manner. I want to show a dialog datepicker when user click on an EditText. So if user click on EditText, A dialog datepicker will be invocked and it will show only month and year fields. To do this, at first we have to create a xml layout to hold the EditText fields. So create an android project and name it DatePickerExample. In the main.xml file just try to write this simple code....
Read more

Conflict Serializability in database

Image
To maintains database state consistency we introduce serializability. Using serializability we can understand which schedule will ensure consistency, and which schedule will not. When we are capable of converting a concurrent schedule into a serial schedule then we cal it serializable schedule. A schedule is serializable if it is equivalent to a serial schedule. We divided this concepts into two parts 1. Conflict serializability  & 2. View serializability In this discussion I just clarify you the conflict serializability. Consider two instruction read, write and the data item A and B. When two instruction execute different data item such as read(A) and read(B), then we can swap the instruction without affecting the result of the schedule. But when the data item is equivalent to one another we need to consider following four condition.    a.   read (A ),    read ( A ).   they   don’t conflict.    b.   read ( Q),  ...
Read more

Simple Pagination using jquery,mySql and PHP

Image
In this post we are going to learn about pagination using jQuery,MySQL and PHP.This is very simple tutorial.It has four files which are as below. (1) config.php file     - For the database connection details. (2) index.php file     - Main file that display the result to the user. (3) data.php file     - File having code to fetch the data from the table. (4) pagination.js file     - Javascript file for acting as a data controller Download Full Source Create Database table CREATE TABLE IF NOT EXISTS `users`(  `id` int(10) NOT NULL AUTO_INCREMENT,  `FirstName` varchar(200) NOT NULL,  `Middlename` varchar(200) NOT NULL,  `LastName` varchar(200) NOT NULL,  PRIMARY KEY (`id`) ) config.php file Change the values of hostname,username,password and database name <?php $mysql_hostname = "localhost";  $mysql_user = "root";  $mysql_password = "";  $mysql_database = "test";  $con = mysql_connect($mysql_hostname, $...
Read more