On 02 August 2007 15:58, Daniel Brown wrote:
> On 8/2/07, Ben Ramsey <ramsey@xxxxxxx> wrote:
> > I'm trying to set a sticky bit on a directory with chmod(). The same
> > octal value works from the command prompt, but it doesn't appear to
> > work correctly with the PHP function. Anyone have an idea as to why?
[SNIP]
> Drop the preceding 0 from the chmod() function parameters. The
> four-digit octal value is preferred, and the 0 is the first bit to
> show that there's no user- or group-specific execution (su-exec'ing,
> basically) or "stickiness" to the file/directory. However,
> three-digit values will work. In either case, five digits will not
> work.
That's a ridiculous and downright wrong piece of advice. It may be correct for doing it directly in the shell, but in PHP you need the leading 0 to force the numbers to octal: 0755 is exactly the same as 00755 and 000755 (etc.), but different from plain 755.
>
> Right:
> chmod 0755 file.php
> chmod 1777 file.php
> chmod('file.php',0755);
> chmod('file.php',1777);
That last statement is the same as:
chmod('file.php', 03361)
which I don't think will have the desired effect!!
> Will almost always work, but isn't entirely correct:
Not even nearly correct:
> chmod 755 file.php
> chmod 644 file.php
> chmod('file.php',755);
... same as: chmod('file.php', 01363);
> chmod('file.php',644);
... same as: chmod('file.php', 01204);
> Will never (or at least, SHOULD never) work:
On the contrary, the PHP versions of these are entirely correct -- you *need* the leading zeros to make the numeric literals be octal:
> chmod 00755 file.php
> chmod 01777 file.php
> chmod('file.php',00755);
> chmod('file.php',01777);
Cheers!
Mike
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