Category Archives: PHP

Php tutorials

How to compress images in php using gd

By | March 12, 2013

Php applications might need to do some image processing if they are allowing users to upload pictures of somekind. This can include cropping, watermarking, compressing etc. To compress an image the quality needs to be adjusted. Here are few examples function compress_image($src, $dest , $quality) { $info = getimagesize($src); if ($info[‘mime’] == ‘image/jpeg’) { $image… Read More »

Convert excel to csv in php

By | March 11, 2013

When working with data import and export for example, file formats like csv and excel are commonly used. Data can be exported to csv format and imported elsewhere. Also data might be entered manually in an excel file and then imported in the database. So there might be a need to convert excel files to… Read More »

Websockets with php – tutorial on basics

By | February 12, 2013

Websockets Websockets is a new feature available in browsers as a part of the Html5 specs that allows javascript clients to open bi directional socket connections to a server. Currently all major desktop browsers support the api. Websocket is not an independant socket protocol, but is based on the TCP protocol just like HTTP. Therefore… Read More »