Re: Equivalent of PHP "hex2bin()"

From: John McKown <john(dot)archie(dot)mckown(at)gmail(dot)com>
To: Stephen Cook <sclists(at)gmail(dot)com>
Cc: PostgreSQL - general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Equivalent of PHP "hex2bin()"
Date: 2014-12-19 20:47:59
Message-ID: CAAJSdjiiWLjX-Y50KvDb2DGQjfXxnsr_C_u4R2e2BhzG1UErTg@mail.gmail.com
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to_hex() takes in integer or bigint and returns a hexadecimal string
equivalent. But there is also, perhaps better, encode() and decode() which
convert string to either base64, hex, or "escape" codes.

http://www.postgresql.org/docs/9.3/static/functions-string.html

On Fri, Dec 19, 2014 at 2:38 PM, Stephen Cook <sclists(at)gmail(dot)com> wrote:
>
> PHP has functions "bin2hex()" and "hex2bin()", and I have to deal with
> the results in PostgreSQL.
>
> These functions "Returns an ASCII string containing the hexadecimal
> representation of str. The conversion is done byte-wise with the
> high-nibble first" and "Decodes a hexadecimally encoded binary string".
> Basically you can take binary data and each byte becomes two hexadecimal
> characters.
>
> Is there anything in PostgreSQL that can do this already? I'm sure I can
> work it out but it can't hurt to ask first.
>
> -- Stephen
>
>

--

While a transcendent vocabulary is laudable, one must be eternally careful
so that the calculated objective of communication does not become ensconced
in obscurity. In other words, eschew obfuscation.

111,111,111 x 111,111,111 = 12,345,678,987,654,321

Maranatha! <><
John McKown

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