Online Diary of Renzou

It is one of the most common error of a programmer in PHP which is on how to declare a variable. Every programming language recquires varaiable declaration because variables are being use to store your temporary data. Sometimes programmers for got and sometimes failed to declare a variable in which it causes an error to their programs. The dollar sign symbol ($) uses to declare a variable in PHP. In other web programming language such as Coldfusion it uses double number sign (##). For PHP case $ is the only one that being use to declare a variable and no other than. Below is the sample of variable declaration and together with its output.

PHP Code:

<?php
   $firstname = "John Larry Limbo";
   $middlename = "Abellanosa";
   $lastname = "Limbo";

   echo "My firstname is: ".$firstname."<br/>";
   echo "My middlename is: ".$middlename."<br/>";
   echo "My lastname is: ".$lastname;
?>

Dont for get to put the php opening ang closing tags before you run the code cause it might cause an error on your program. As you notice I use dot(.) on my code. The function of this dot is to concatenate the string “ My firstname is: ” with the value of the variable $firstname and same with the other. Observe carefully the ouput below or you may try it with your own. Just send me a comment if the code does not run or it returns an error.

Sample ouput:

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This is one of my new creation which is the Student Management System using the PHP language. This is our project during our System and Analysis and Design. Together with my group Ms. Shinette V. Jamora, Mr. Dave Angelo Gutierrez and myself made and design the concept of this system. Here is a sample login design of the system.

We also choose to have the mySql database to be the back-end database of the system. As of now we are trying to make the design of the system to be compatible with different types of browser including the IE8. Actually the design is currently under testing stage.
We also use jQuery in this system, CSS also and a little bit of scripting languages. In making and coding also we use our own coding standard we create a mini MVC or Model View Controller framework in order for us to make the coding more easier and faster, because we only have 2 months to finish this including already the planning, designing, data gathering, testing and debugging and then the final defense for the finale.

Home interface is being shown below:

Here is a sample of using a for loop in a PHP language.

Code:

<?php

    for($var_x=1; $var_x<=5; $var_x++)
    {
      echo "Number: ".$var_x."<br/>";
    }

?>

This is a tutorial on how to use a while loop in a PHP. The output will be the same if you were going to use a for loop, the only difference is only the code itself and especially the concept of each loop and how this loop performs its action when the programmer run his/her program. Below is a sample illustration on how to code while loop in PHP.

PHP Code:

<?php
   $var_x = 1;
   while($var_x <= 5)
   {
     echo "Number: ".$var_x."<br/>";
     $var_x++;
   }
?>

PHP stand for PHP Hypertext Preprocessor. PHP also known as a recursive acronym would you want to ask why recursive? It is because recursive is an acronym in which the first letter of the first word represented but the acronym is the acronym itself.

PHP also known as an open source, server side and a HTML embedded scripting language. When we say embedded scripting language it is a language in which it is a kind of language in where HTML and PHP codes can be combined. It is a server side client, because PHP is being process in the server and not in the browser. E,g A user request a page. As you notice that when you view source the page and then only pure HTML code are you going to see, it is because PHP process first in the server and the server will only send to the user or to the client the HTML form.