adding and taking away

[Anon]

<?php
$userlist = file("users.inc.php");
for ($i=1; $i<count($userlist); $i++) {
list($n,$p,$a,$e,$g,$s,$m) = explode(':',chop($userlist[$i]));
if ($n == $user && $m >= 1) {
echo "You Have $m";
}
elseif ($n == $user && $m == 0) {
echo "You have no money<br>";
}
}
?>

Using this script, What should i put for the "($n == $user && $m >= 70)" - What can I put in for that if statment, to take that 70 away from $m ($m is the money statment in the users account) The ammount on the users account can not go under 0.

Thanks, anyone who helps will be added to the credits list on the site.

[Anon]

You need to be clearer in your question.

First, there's no statement: ($n == $user && $m >= 70)
The closest one is
if ($n == $user && $m >= 1) {

If I get you correctly, this is probably what you want:

<?php
$userlist = file("users.inc.php");
for ($i=1; $i<count($userlist); $i++) {
list($n,$p,$a,$e,$g,$s,$m) = explode(':',chop($userlist[$i]));
$m -= 70;
$m = ($m < 0) ? 0 : $m;
if ($n == $user && $m >= 1) {
echo "You Have $m";
}
elseif ($n == $user && $m == 0) {
echo "You have no money<br>";
}
}
?>

Diego

[Anon]

I just realived i missed abit of the code out lol:
<input type=hidden name=price value=70>
<input type=submit Value=Submit>
<?php
} else {
$userlist = file("users.inc.php");
$done = false;
$auth = false;
$found = false;
$i = 0;
while ((!$found) && ($i<count($userlist))) {
$i++;
list($n,$p,$a,$e,$g,$s,$m) = explode(':',$userlist[$i]);
$found = ($n==$user);
} if ($m >= 1) <wat to put here>

	$userlist[$i] = implode(':',array($n,$p,$a,$e,$g,$s,$m));
	$fd = fopen("users.inc.php","w");
	fputs($fd,"<?php die(\"Access restricted\"); ?>\n");
	for ($i=1; $i<count($userlist); $i++) {
		fputs($fd,chop($userlist[$i])."\n");
	}
	fclose($fd);
	echo "<center><b>Thanxs for your purchase";
}

?>

What do i add to make it take away the 70 and store it? and what do i add to put my: ($m == 0) {
echo "You have no money<br>";
}

Thanxs for ur help