This non working prototype code is bothering me....fixed.

<?php

# considering t2.txt contains below two lines

#a c d f n z r

#granc dr ssdo and

#

$file_lines = file_get_contents('./t2.txt');

$split_by_line = explode("\n",$file_lines);

$circular = array();

foreach ($split_by_line as $line) {

        $split_by_words = explode(' ',$line);
        sort($split_by_words);

        $circular = $split_by_words; 
        foreach($split_by_words as $word){
                array_push($circular,array_shift($circular));

                echo implode($circular," ") . "\n"; 

        }

        $split_by_words = null;

        echo "\n";

}