This script causes PHP to crash (sigsegv, return nothing OR to cause wget to tell "HTTP request sent, awaiting response... End of file while parsing headers. Retrying.") almost any time. The include.txt file I used was larger than 100k and was just a simple text. The content of the file is not important at all, I tried several versions.

<?php

function getMicrotime()
  {
    list($usec, $sec) = explode(" ", microtime());

    return ((float)$usec + (float)$sec);
  }

function timer($buffer)
  {
    global $startTime;
    
    $endTime = getMicrotime();
    
    $diff = sprintf("%.5f", $endTime - $startTime);
    
    return $buffer . "\nExecution time: $diff sec<br>\n";
  }

$startTime = getMicrotime();
ob_start("timer");

for ($i = 0; $i < 500; $i++)
  {
    $fh = fopen("include.txt", "r");
    $cmd = fread($fh, 1048576);
    fclose($fh);

    echo "$i $cmd\n";
  }

?>


I compiled PHP with

./configure --prefix=/usr/local/php --disable-short-tags --enable-safe-mode --enable-ftp --with-mysql=/usr/local/mysql --with-zlib --enable-memory-limit