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Doc Bug #72804 docs on rewind explicitly says it must be opened by fopen()
Submitted: 2016-08-10 13:25 UTC Modified: 2016-08-10 21:13 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: divinity76 at gmail dot com Assigned:
Status: Open Package: Filesystem function related
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
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From: divinity76 at gmail dot com
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 [2016-08-10 13:25 UTC] divinity76 at gmail dot com
Description:
------------
---
From manual page: http://www.php.net/function.rewind
---
quote: The file pointer must be valid, and must point to a file successfully opened by fopen().

rewind also works fine on files opened by tmpfile(), so at the very least, the docs should say "opened by fopen() or tmpfile()", if there isn't more. (PS: there is a similar problem with the docs for "ftell")

Test script:
---------------
<?php
$h=tmpfile();
var_dump(ftell($h));
fwrite($h,'PHP');
var_dump(ftell($h));
rewind($h);
var_dump(ftell($h));


Expected result:
----------------
int(0)
int(3)
int(3)

Actual result:
--------------
int(0)
int(3)
int(0)

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 [2016-08-10 21:13 UTC] requinix@php.net
-Package: Documentation problem +Package: Filesystem function related
 [2016-08-10 21:13 UTC] requinix@php.net
It works on all streams (that support seeking).

fclose, feof, fflush... It looks like most of the functions specifically call out fopen or fsockopen. Given how prevalent streams are, could they warrant their own pseudotype in the manual?
 
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