10-19-2010
The noclobber is usually more pain than help. It does not protect files from other writers, like "sort -o file_name". It might be good in a production environment, especially if you code your apps so you are writing files with date-time in the name, new each time.
However, removing write permissions, 'chmod a-w file_name' or an equivalent C/PERL call, after writing a final file is even better: more protective, especially if you avoid doing trivial things logged in as root (never a good idea), and yet less restrictive.
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LEARN ABOUT PHP
phar.interceptfilefuncs
PHAR.INTERCEPTFILEFUNCS(3) 1 PHAR.INTERCEPTFILEFUNCS(3)
Phar::interceptFileFuncs - instructs phar to intercept fopen, file_get_contents, opendir, and all of the stat-related functions
SYNOPSIS
finalpublicstatic void Phar::interceptFileFuncs (void )
DESCRIPTION
instructs phar to intercept fopen(3), readfile(3), file_get_contents(3), opendir(3), and all of the stat-related functions. If any of
these functions is called from within a phar archive with a relative path, the call is modified to access a file within the phar archive.
Absolute paths are assumed to be attempts to load external files from the filesystem.
This function makes it possible to run PHP applications designed to run off of a hard disk as a phar application.
PARAMETERS
No parameters.
RETURN VALUES
EXAMPLES
Example #1
A Phar.interceptFileFuncs(3) example
<?php
Phar::interceptFileFuncs();
include 'phar://' . __FILE__ . '/file.php';
?>
Assuming that this phar is at /path/to/myphar.phar and it contains file.php and file2.txt, if file.php contains this code:
Example #2
A Phar.interceptFileFuncs(3) example
<?php
echo file_get_contents('file2.txt');
?>
Normally PHP would search the current directory for file2.txt, which would translate as the directory of file.php, or the current direc-
tory of a command-line user. Phar.interceptFileFuncs(3) instructs PHP to consider the current directory to be phar:///path/to/myphar.phar/
and so opens phar:///path/to/myphar.phar/file2.txt in the above example code.
PHP Documentation Group PHAR.INTERCEPTFILEFUNCS(3)