get a token in a file

[arunkumar]

Sir,
i am having a file i want to take a specify token from tyhat file how can i?

Example imy file it tt.txt and i am having

" adnbd asjha arun123 aksja;l"

i want to extract arun123 how can i
Arunkumar

[phpster]

regex, stristr, positional data with substr...take your pick

[arunkumar]

Sir,
i tried stristr
my code was
$handle = fopen("test.txt", "r+");
while (!feof($handle)) {
$buffer = fgets($handle, 4096);
if($buffer == "arun123")
$domain = stristr($buffer, 'arun123');
echo "..........".$domain.";;;;;;;;;;;";
}
fclose($handle);
it is not working
Arunkumar

[phpster]

try

$handle = fopen("test.txt", "r+");
    while (!feof($handle)) {
    $buffer = fgets($handle, 4096);
        if {stristr($buffer,"arun123")){
            $domain = stristr($buffer, 'arun123');    
        echo "..........".$domain.";;;;;;;;;;;";    
    }
    fclose($handle); 

cuz this line:
if($buffer == "arun123")

will never evaluate properly since yuou can't compare a chunk of a string to an entire string and hope to get a match...