<?php
$stdin = fopen('php://stdin', 'r');
$testcase = fgets($stdin);
$n=1;
while($n<=$testcase){
$start = fgets($stdin);
$end=fgets($stdin);
if($start==1)
{
$start=2;
}
for($i=$start;$i<$end;$i++){
$flag=0;
for($j=2;$j<$i;$j++){
if($i%$j==0){
$flag=1;
break;
}
}
if($flag==0){
echo $i."\n";
}
}
$n++;
}
fclose($stdin);
?>
can please anyone help me why its show time limit exceed