ahi lo arregle :P
Código PHP:
<?
$file = file("a.txt");
$cnt = count($file);
$a = '127.0.0.1';
$ars0 = ''.$a.'-1';
$ars1 = ''.$a.'-0';
$ar0 = rtrim($ars0, "\r\n");
$ar1 = rtrim($ars1, "\r\n");
for($i=0; $i<=$cnt; $i++)
{
$c = rtrim($file[$i], "\r\n");
if($c == $ar0 || $c == $ar1)
{
$b = $c;
break;
}
else
{
countinue;
}
}
echo $b;
?>