brands.php

<?php
	$sourcefile = fopen('word.txt', 'r');	
	while (!feof($sourcefile)){		
		$cursymbol = fread($sourcefile, 1);						
		if ($cursymbol != " "){ 									
			$word = $word . $cursymbol;						
		} else {						
			$words[$word] += 1;													
			$word = null;			
		}		
	}	
	foreach ($words as $brand => $count) {
		echo $brand . ' - ' . $count . '; ';		
	}
	fclose($sourcefile);	
?>

brands.txt

mac mac word ibm mac pc mac mac mac power mac ibm power