在PHP中包含一个已经打开的文件？

Question

I'd like to include an already opened file. As include wants a filename this seems untrivial.

The only thing I can find on http://php.net/manual/en/wrappers.php.php is to somehow coax the file descriptor out of the return value of fopen and use php://fd/$fd . I can't get any further.

Edit: apparently it is not clear, I would like to reuse the file descriptor and not reopen the file.

Answer 1

This might work for you. Depending on how the stream was opened, it might return either the full path name or just the base name, so you'll probably have to do some munging to check and make sure the right path is supplied. (Or the script is run from the correct directory.)

<?php

    $fh = fopen('include_source.php', 'r');
    $md = stream_get_meta_data($fh);
    include $md['uri'];
?>

Answer 2

You can use a temp file:

$return_to_position = ftell($fp);
$temp_path = tempnam('/tmp', 'INC');
$temp_fp = fopen($temp_path, 'w');
rewind($fp);
while(!feof($fp)) {
   fwrite($temp_fp, fread($fp, 1024));
}
fclose($temp_fp);
fseek($fp, $return_to_position);
include $temp_path;

edit as an in-memory alternative

Similar to my previous answer, but completely in memory... and using the dreaded eval()... ( don't hate on eval : this is equivalent to the previous answer in terms of security) (I mean, the idea in general makes me uneasy... but it's cool to try and solve ;-)

NOTE eval does not like php tags, this may not work if the file has them...

$return_to_position = ftell($fp);
rewind($fp);
$fp_php_code = "";
while(!feof($fp)) {
  $fp_php_code .= fread($fp, 1024);
}
fseek($return_to_position);
eval($fp_php_code);

Answer 3

I'm not sure what you are after, but if it's something like adding classes dynamically (as opposed to procedural code), you could explore the experimental PECL extension bcompiler_read

Apparently you can give it a file descriptor and it will read it and create classes... seems pretty cool.

There is also runkit , which allows runtime manipulation of several facets, including class hierarchy. Also experimental.