Generate files in-memory with PHP

in_memory_files.php

<?php

/**
 * This snippet shows a PHP neat trick: build a file into memory without use the filesystem.
 */

$fp = fopen('php://memory', 'rw'); // open an in-memory handler

for ($i = 0; $i < 100; ++$i) { // write some data to handler
  fwrite($fp, $i."\n");
}

fseek($fp, 0); // rewind file pointer to the begining
$content = '';

while (!feof($fp)) { // read agian the file handler and put data in a variable
  $content .= fread($fp, 8192);
}

fclose($fp); // free allocated memory
echo $content;