- var_dump: documentation ( source)
- feof: documentation ( source)
- fwrite: documentation ( source)
- rewind: documentation ( source)
- ftell: documentation ( source)
- fread: documentation ( source)
- fopen: documentation ( source)
<?php
$stream = fopen("php://temp", "r+");
fwrite($stream, "0123456789");
rewind($stream);
var_dump(fread($stream, 1024), ftell($stream), feof($stream));