Reply to Re: [PHP] How to make binary strings useful?

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Posted by M. Sokolewicz on 10/04/84 11:07

actually, ignore that... I didn't read carefuly enough
*sighs*

M. Sokolewicz wrote:

> Richard Lynch wrote:
>
>> Jerry Miller wrote:
>>
>>> Is there an example of the UNIX od utility written
>>> in PHP?
>>
>>
>>
>> I dunno. Goodle for "PHP octal dump"
>>
>>
>>> Is such a useful task even possible??
>>
>>
>>
>> Certainly it's possible, though I'm not sure why you wouldn't just USE
>> the
>> existing 'od' utility.
>>
>>
>>> From what I've seen of strings, they're completely
>>> opaque, so what good does it do to be able to read
>>> binary-safe strings from a file???
>>
>>
>>
>> Strings are strings in PHP.
>>
>> They're not bytes thinly disguised as strings by some declarative fiat of
>> the programmer.
>>
>> If you want to convert a string to an integer, then you have to use the
>> http://php.net/ord function to do that.
>>
>> You can then use functions to convert to binary, hex, octal etc.
>>
>>
>>> Even the deprecated
>>> (why????) $str{$inx} notation apparently results in
>>
>>
>>
>> You'd have to read the PHP-Developer list to find out what the rationale
>> for deprecating that feature was.
>>
>> Perhaps the confusion that arose from people thinking strings where
>> arrays, since the syntax for array indexing was "the same" wasn't worth
>> the benefit of being able to use [] on a string.
>>
>>
> I have no idea why everyone here believes that syntax is deprecated,
> since I don't believe it actually is! The deprecated syntax was the one
> with *square* brackets $string[3] instead of $string{3} etc.
>
>>> another string, because trying to printf it with the
>>> "%02x" format always comes out with "00." (Maybe
>>> that's why -- it's useless!)
>>
>>
>>
>> Actually, I've always found [] access to a string quite useful.
>>
>> But since I read the manual, I knew I just got a string which happened to
>> be one character in length from that.
>>
>>
>>> As an experienced C
>>> programmer, I'm finding PHP to be as counter-intuitive
>>> for low-level work as Perl is.
>>
>>
>>
>> So write your utility in C. [shrug]
>>
>>
>>> I need to convert binary
>>> dumps of data structures into database table rows, and
>>> MySQL on my server doesn't support queries from C.
>>
>>
>>
>> Okay, but don't wade into PHP programming pretending that it's C just
>> because the syntax has a surface resemblance to C.
>>
>>
>>> I thought about writing a CGI script (in C) that
>>> would generate the hard-coded PHP output for
>>> each instance, but a URL that ends in ".cgi" is
>>> never intercepted by the PHP interpreter. Worse
>>
>>
>>
>> Then your web server PHP CGI configuration is borked.
>>
>> Fix it.
>>
>>
>>> yet, the <SCRIPT LANGUAGE="" SRC="">
>>> that works perfectly well with JavaScript is
>>> likewise ignored if the language is PHP! Finally,
>>
>>
>>
>> Actually, you can use <SCRIPT LANGUAGE="PHP"> on the server to have it
>> parse PHP, but PHP is always parsed on the SERVER, never on the
>> client, so
>> the browser is not going to be able to do much intelligent with <SCRIPT
>> LAGNGUAGE="PHP" SRC="xxx">
>>
>>> I'm not aware of a Content-type such as "text/php."
>>> What exactly was the purpose of designing yet
>>> another inflexible language?!
>>
>>
>>
>> If you want to send PHP source code to the browser, you'd send it as
>> "text/plain"
>>
>> Other than that, PHP is SERVER-SIDE and sending text/php would be silly,
>> as browsers don't have PHP interpreters (and likely never will).
>>
>> Basically, as far as I can tell, you've waded into PHP pretending that
>> it's C and now are pissed off because it's not C. Well duh!
>>
>> Why not spend a little time to read the [bleep] manual?!
>>
>> http://php.net/manual/
>>
>> Just focus on the first few sections, up to the point where it starts
>> listing all the extensions and functions.
>>
>> An experienced C programmer could probably read through all that in,
>> what,
>> an hour or two?
>>
>> You would have saved yourself a GREAT DEAL of frustration, and wouldn't
>> have wasted so much time on your rant and the replies.
>>
>> Good Luck!
>>
>> http://php.net/manual/
>>

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