Data file reading correctly

[dips_007]

I am reading a datafile which is :separated it looks abit like this

City County Latitude Longitude Easting Northing

NEWLYN CL -19980 -19980 146 28
NEWMALDEN LD -960 -960 520 168
NEWMARKET SF 1440 1440 563 262
NEWMILLS DY -7200 -7200 400 385
NEWMILNS SH -15600 -15600 253 636
NEWMILTON HE -5940 -5940 424 94
NEWNHAM GR -8820 -8820 368 211
NEWPORT EX 780 780 552 234
NEWPORT GW -10800 -10800 330 187
NEWPORT IW -4680 -4680 449 89
NEWPORT PK -17400 -17400 205 239
NEWPORT SE -8519 -8519 375 318

the problem i have is if the user enters a town the find the first town that matchs but if the user enters a town and county as well then should try to find the match the problem is that it always stops at the first match eg NEWPOERT and not NEWPORT IW

[ code ]
/ open the data file /

$fn = fopen("/townsx","r");

/ now to read the files record by record /

while($rec = fgets($fn,256))
{

/ split each record into fields (: is separator) /

$elem = split(":",$rec);

if($elem[0] == $town1 && $elem[1] == $county1)
{
$g1 = 1;
$x1 = $elem[4];
$y1 = $elem[5];
}
else if($elem[0] == $town1)
{
$g1 = 1;
$x1 = $elem[4];
$y1 = $elem[5];
}

if($elem[0] == $town2 && $elem[1] == $county2)
{
$g2 = 1;
$x2 = $elem[4];
$y2 = $elem[5];
}
else if($elem[0] == $town2)
{
$g2 = 1;
$x2 = $elem[4];
$y2 = $elem[5];
}

/ test whether towns have been found /

if( $g1 == 1 && $g2 == 1 && $g3 == 1) break;
[ code ]

[swr]

Change this:

if($elem[0] == $town1 && $elem[1] == $county1)
{
$g1 = 1;
$x1 = $elem[4];
$y1 = $elem[5];
}
else if($elem[0] == $town1)
{
$g1 = 1;
$x1 = $elem[4];
$y1 = $elem[5];
}

To just this:

if($elem[0] == $town1 && (empty($county1) || $elem[1] == $county1))
{
$g1 = 1;
$x1 = $elem[4];
$y1 = $elem[5];
}

Likewise for the other test on $town2/$county2. That way it'll require that $country1 must either be blank/unset, or match $elem[1].