php - Error 500: Premature end of script headers -

i "premature end of script headers: contactform.cgi" error message when running below script. frustrates me ran .php on server , worked. however, had change servers , support cgi php. however, doesn't work. don't think code wrong, take in case.

i've read around , have said it's permissions issue. case me?

i know "display_errors" , "error_reporting" statements display errors in error log, if don't have access server, how can check logs?

#!/usr/local/bin/php  <?php  print "content-type: text/html\n\n"; use cgi::carp qw(fatalstobrowser); ini_set('display_errors',1); error_reporting(e_all);  if(isset($_post['email'])) {  //email form me $email_to = "myemail@yahoo.com";  function died($error) {     // error code can go here     echo "oops... something's wrong. ";     echo "fix error(s) below:<br /><br />";     echo $error."<br /><br />";     echo "all base belong us...<br /><br />";     die(); }   // validation expected data exists if(!isset($_post['first_name']) ||     !isset($_post['last_name']) ||     !isset($_post['email']) ||     !isset($_post['subject']) ||     !isset($_post['comments'])) {     died('there appears problem form submitted.');        }   $first_name = $_post['first_name']; // required $last_name = $_post['last_name']; // required $email_from = $_post['email']; // required $subject = $_post['subject']; // not required $comments = $_post['comments']; // required  $error_message = ""; $email_exp = '/^[a-za-z0-9._%-]+@[a-za-z0-9.-]+\.[a-za-z]{2,4}$/'; if(!preg_match($email_exp,$email_from)) { $error_message .= 'the email address entered not appear valid.<br />'; } $string_exp = "/^[a-za-z .'-]+$/"; if(!preg_match($string_exp,$first_name)) { $error_message .= 'the first name entered not appear valid.<br />'; } if(!preg_match($string_exp,$last_name)) { $error_message .= 'the last name entered not appear valid.<br />'; } if(strlen($comments) < 2) { $error_message .= 'the comments entered not appear valid.<br />'; } if(strlen($error_message) > 0) { died($error_message); }   $email_message = "form details below.\n\n";  function clean_string($string) {   $bad = array("content-type","bcc:","to:","cc:","href");   return str_replace($bad,"",$string); }  $email_message .= "first name: ".clean_string($first_name)."\n"; $email_message .= "last name: ".clean_string($last_name)."\n"; $email_message .= "email: ".clean_string($email_from)."\n"; $email_message .= "subject: ".clean_string($subject)."\n"; $email_message .= "comments: ".clean_string($comments)."\n";  //email subject (put here include subject form) $email_subject = "cor | ".clean_string($subject)."";   // create email headers $headers = 'from: '.$email_from."\r\n". 'reply-to: '.$email_from."\r\n" . 'x-mailer: php/' . phpversion(); @mail($email_to, $email_subject, $email_message, $headers); ?>  <!-- include own success html here -->  <?php header("location: cor/thankyou.html"); } ?> 

i thought answer own question kicks , giggles (and might 1 day find same error , no answers).

it file permission issue.

all files on website set permission of '644.' once changed permission level 705 (chmod 705 [chmod 755 work]) fine , dandy. not matters, changed folder in 701 (to hide it, still executable server).

i still don't understand why .php file worked on other server when set 644?? how apache execute script without world permission?? apache not need world permission?? few questions still have...