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Project CMS finished

23 October, 2009 leadamc Leave a comment

I have been very busy for the last 3 months, for building a CMS management system for The Smith Group. It contains 14 websites and an admin CMS system.

The system is built from scratch in PHP MYSQL Javascript AJAX in a linux box.

Project management nightmare:

The requirement was not full established at the beginning of the project, and Project Manager went on vacation for 8 weeks. During the 8 weeks, I hard coded all the CMS systems, and based on the website new template he gave me.  I have all the functions coded, website integrated, modified, etc etc.  But when he got back, everything I did was not he wanted.  From experience, it highly depends on  his input on this project during the process of building the system. Now that he is back, 3 weeks after, all the functions, website layout, hyper links, etc etc are changed. Until now, he still wants to change functions, although these functions are already been modified in the previous 3 weeks. But anyway, the project is getting to an end. I will responsible for future changes.

From this example, also as per project management studies, how important it is to have a fully established and fully understand requirement for any given project!!!

I learned from experience, especially this experience, that to work on a project or to start a new project, requirement study and feasibility study is very important, and also have the requirements and scale well established before the start is the key to have a successful project.

Although this Smith CMS project is finished, it has extended for an extra 2 weeks in an established 9 weeks project schedule, which is about 1/5 times more.  It is a successful project based on customer satisfaction, functionality, and so on.

Categories: CMS System, Programming, ajax, php

image uploader class (PHP)

23 September, 2009 leadamc 1 comment

~/Desktop/test.php.html

<?php
//////////////////////////////////
//////Class ImgUploader.php///////
//////Creator: leadamc ///////////
//////////////////////////////////

$uploaddir = '../group/files/';

//define a maxim size for the uploaded images in Kb
 define ("MAX_SIZE","5000");

//This function reads the extension of the file. It is used to determine if the file  is an image by checking the extension.
 function getExtension($str) {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i+1,$l);
         return $ext;
 }

//This variable is used as a flag. The value is initialized with 0 (meaning no error  found)  
//and it will be changed to 1 if an errro occures.  
//If the error occures the file will not be uploaded.
 $errors=0;
//checks if the form has been submitted
 if(isset($_POST['Submit']))
 {
    //reads the name of the file the user submitted for uploading
    $image=$_FILES['image']['name'];
    //if it is not empty
    if ($image)
    {
    //get the original name of the file from the clients machine
        $filename = stripslashes($_FILES['image']['name']);
    //get the extension of the file in a lower case format
        $extension = getExtension($filename);
        $extension = strtolower($extension);
    //if it is not a known extension, we will suppose it is an error and will not  upload the file,  
    //otherwise we will do more tests
 if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif"))
        {
        //print error message
            echo '<h1>Unknown extension!</h1>';
            $errors=1;
        }
        else
        {
//get the size of the image in bytes
 //$_FILES['image']['tmp_name'] is the temporary filename of the file
 //in which the uploaded file was stored on the server
 $size=filesize($_FILES['image']['tmp_name']);

//compare the size with the maxim size we defined and print error if bigger
if ($size > MAX_SIZE*1024)
{
    echo '<h1>You have exceeded the size limit!</h1>';
    $errors=1;
}

//we will give an unique name, for example the time in unix time format
$image_name=time().'.'.$extension;
//the new name will be containing the full path where will be stored (images folder)
$newname=$uploaddir.$image_name;
//we verify if the image has been uploaded, and print error instead
$copied = copy($_FILES['image']['tmp_name'], $newname);
if (!$copied)
{
    echo '<h1>Copy unsuccessfull!</h1>';
    $errors=1;
}}}}

//If no errors registred, print the success message
 if(isset($_POST['Submit']) && !$errors)
 {
    echo "<h1>File Uploaded Successfully! Try again!</h1>";
 }
?>