title: Use of web services?
body: <p>I am a Computer Science student, and I am studying the web this academic year. I already have a knowledge on HTML, CSS, Javascript, PHP and a bit of XML. I will need to make a mini project which will includes all of these technologies, including web services in it. Could you give me a description of why and how web services work. Why we use that, and what could not be done without it.</p>
  
  <p>It would be good if you could give me an example, where we use web services. That'd give me some ideas to think about my project title.</p>
  
  <p>I'm going to use SOAP and WSDL, using PHP.</p>