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Bug #70814 fopen('file', 'w+') breaks subsequent file_get_contents calls
Submitted: 2015-10-29 17:56 UTC Modified: 2015-10-29 18:00 UTC
From: pedronaroga at gmail dot com Assigned:
Status: Not a bug Package: Filesystem function related
PHP Version: 7.0.0RC6 OS: Ubuntu 15.10
Private report: No CVE-ID: None
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From: pedronaroga at gmail dot com
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 [2015-10-29 17:56 UTC] pedronaroga at gmail dot com
Description:
------------
Using the following snippet, I get the correct response:

    var_dump(file_get_contents('my_local_file')); //Prints file contents
    fopen('my_local_file', 'r+');
    var_dump(file_get_contents('my_local_file')); //Prints file contents again

However, changing the mode in fopen to 'w+', causes weird behaviour:

    var_dump(file_get_contents('my_local_file')); //Prints file contents
    fopen('my_local_file', 'w+');
    var_dump(file_get_contents('my_local_file')); //Prints an empty string

Error is reproductible in PHP 5.6.

Test script:
---------------
    <?php
    var_dump(file_get_contents('my_local_file')); //Prints file contents
    fopen('my_local_file', 'w+');
    var_dump(file_get_contents('my_local_file')); //Prints an empty string


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 [2015-10-29 18:00 UTC] requinix@php.net
-Status: Open +Status: Not a bug
 [2015-10-29 18:00 UTC] requinix@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

w+ will truncate the file.
 
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