selawe

(function(window) {
        'use strict';
        /**
         * 
         * @description A Class, that can store files for upload with javascript/ajax
         * @class FileUplaoder
         */
        window.FileUplaoder = function() {

            var fileCache = {}, i = 0;

selawe

Basics

Creating a new PHPExcel Object.

    $this->PHPExcel = new PHPExcel();

Working with sheets

Creating a new sheet:

selawe

<?php

function dHash($file, $size = 8)
{
    $hash = '';
    list($w, $h, $t) = getimagesize($file);
    $im = imagecreatetruecolor($size + 1, $size);
    imagefilter($im, IMG_FILTER_GRAYSCALE);
    switch($t) {
        case 1:

selawe

Importing/Indexing database (MySQL or SQL Server) in Solr using Data Import Handler

Install Solr

download and install Solr from http://lucene.apache.org/solr/.

you can access Solr admin from your browser: http://localhost:8983/solr/

use the port number used in installation.

selawe

Modified Preorder Tree Traversal

Hierarchical data metrics that allows fast read operations on tree like structures.

Based on Left and Right fields that are set during tree traversal. When entered into node value is set to it's Left, when exiting node value is set to it's Right.

Sample implementation