You can find the library using google "phpexcelreader" or by downloading from http://sourceforge.net/projects/phpexcelreader/
1) Just download the library and unzip it using your zip software.
2) Go inside the Excel folder, and open the reader.php file.
3) remove the below code from the top of the line.
4) And add the below code after remove that.
That's it. Now try to run the sample codes, and then apply this library with your project or whatever you need.