Mine

#!/usr/local/bin/php

<?php
    // read from stdin
    $fd = fopen("php://stdin", "r");
    $email = "";
    while (!feof($fd)) {
        $email .= fread($fd, 1024);
    }
    fclose($fd);

// handle email
$lines = explode("\n", $email);

// empty vars
$from = "";
$subject = "";
$headers = "";
$message = "";
$splittingheaders = true;

for ($i=0; $i < count($lines); $i++) {
    if ($splittingheaders) {
        // this is a header
        $headers .= $lines[$i]."\n";

        // look out for special headers
        if (preg_match("/^Subject: (.*)/", $lines[$i], $matches)) {
            $subject = $matches[1];
        }
        if (preg_match("/^From: (.*)/", $lines[$i], $matches)) {
            $from = $matches[1];
        }
    } else {
        // not a header, but message
        $message .= $lines[$i]."\n";
    }

    if (trim($lines[$i])=="") {
        // empty line, header section has ended
        $splittingheaders = false;
 }
}
 
    // dump complete mail to a file... (appending)
    $myfile = "/usr/home/grsoregon/public_html/html/mail/test.txt";
    $fp = fopen($myfile, 'a');
    fwrite($fp, $from);
    fwrite($fp, "\n"); 
    fwrite($fp, "--------------end from------------");
    fwrite($fp, "\n"); 
    fwrite($fp, $subject);
    fwrite($fp, "\n");    
    fwrite($fp, "--------------end subject------------");
    fwrite($fp, $message);
    fwrite($fp, "\n");    
    fwrite($fp, "--------------end message------------");
    fclose($fp);

?>