QA: PHP programming problem, Reading from text file!?

PHP Programming Problem, Reading From Text File!?

My .php file contains:

<?php
$f=fopen("welcome.txt","r") or exit("Unable to open file!");
while (!feof($f))
{
$x=fgetc($f);
If $x="<"
{
echo"oooooooooooooooooo";
}
echo $x;
}
fclose($f);
?>

and My welcome.txt file contains:

hello world
<title> its title </title>

When I run the php file in wamp, nothing happens, but If I remove the below part, it works!
If $x="<"
{
echo"oooooooooooooooooo";
}

But I dont want to remove this part, How can I fix it? Do you have the same problem?

Thank you

Your comparison statement is wrong.
The correct statement is:
If ($x=="<")

you have a wrong syntax in if condition and should be written like this:
if ($x < some value) {
echo "OOOOOOOOO";
}