Quick help compacting code

[codeboy89]

I just would like to know if anyone can show me if there is any way to do this in fewer lines? Thanks!!

 

if (trim(strip_tags($_POST['cap'])) != $_SESSION['captcha']) {
print "CAPTCHA invalid</div></body></html>";
exit(); }

if (trim(strip_tags(!preg_match("/http:\/\//",$_POST['link'])))) {
print "Link invalid</div></body></html>";
exit(); }

if (( $name == "") || ( $link == "") || ( $cap == "")) {
print "Form not finished</div></body></html>"; 
exit(); }

if (strlen($name) > 25){
print "Name too long</div></body></html>";
exit(); }

if (strlen($link) > 100){
print "Link too long</div></body></html>";
exit(); }

if (strlen($cap) > {
print "CAPTCHA too long</div></body></html>";
exit(); }

[salathe]

Why would fewer lines be an improvement? That said, sure:

 

$error = FALSE;
if (trim(strip_tags($_POST['cap'])) != $_SESSION['captcha']) {
$error = "CAPTCHA invalid";
} elseif ( ! preg_match("/http:\/\//",$_POST['link'])) {
$error = "Link invalid";
} elseif (( $name == "") || ( $link == "") || ( $cap == "")) {
$error = "Form not finished";
} elseif (strlen($name) > 25){
$error = "Name too long";
} elseif (strlen($link) > 100){
$error = "Link too long";
} elseif (strlen($cap) > {
$error = "CAPTCHA too long";
}
if ($error) {
die("$error</div></body></html>");
}

[codeboy89]

Thank you sal, I am new and trying to learn.