php script why if else not working

[Peter Are]

this script gives the result below when ping is good, a numerical value i think in the form of a string

<?php
function pinger ($serverIP)
{
    $pingReturn = exec ('ping ' .$serverIP );
    return $pingReturn ;
 
}
$tmp1 = explode(',' , pinger("localhost"));
echo "$tmp1[2] \n";
$newstring=substr($tmp1[2],10);
echo "$newstring \n";
$finalstr=substr_replace($newstring ,"",-2);
echo $finalstr;
?>

Average = 0ms
0ms
0 is $fianlstr


when ping is bad --- $finalstr is (100% los ------- yes exactly this (100% los

later in the script i have an if elseif statements

if ($finalstrng <= 50) {$status = "good";}
                elseif ($finalstrng > 50 && $finalstrng <= 100){$status = "congested";}
                else {$status = "bad";}

but when $finalstrng is (100% los the status still says good

Please help need to get $finalstrng say bad when not a numeric value
Thanks

[paulrajj]

I think you might have a problem with the variables in your script.

change the variable $finalstrng to $finalstr

[ziycon]

It looks like the value is always 0 which would make it always 'good', like paulrajj said, check your variable names and that your using the correct one.