Short syntax for PHP command line I/O streams

gistfile1.aw

<?php
while(!feof(STDIN)){
    $line = trim(fgets(STDIN));
    if(strlen($line) > 0){
        fwrite(STDOUT,strrev($line).PHP_EOL);
    } else {
        fwrite(STDERR,"An empty line was passed".PHP_EOL);
    }
}