| Re: store backslash in mysql database [message #170641 is a reply to message #170640] |
Fri, 12 November 2010 22:11   |
Jerry Stuckle
Messages: 2598
Registered: September 2010
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Senior Member |
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On 11/12/2010 5:03 PM, Peter wrote:
> Let me apologise in advance as I'm unsure if this can be resolved with
> php or I need to post to a SQL group.
>
> Anyway, I have some data that is encrypted before being stored, but I
> noticed that sometimes the retrieved data, when decrypted, didn't match
> the original data.
>
> What I discovered was that the encryption routine sometimes created the
> backslash character as part of the encryption string. Something like:
>
> CÊ=3Fa=3F³Ýöâ8T\TBÆ
>
> However, when this was stored in the database, the backslash became
> removed leaving:
>
> CÊ=3Fa=3F³Ýöâ8TTBÆ
>
> I thought, if I just add:
>
> $string = str_replace("\","\\",$string);
>
> that would resolve the problem. Thinking that an escaped backslash would
> allow the single backslash char to be stored.
>
> However, that appears to be syntatically incorrect with php.
>
> So is there any other way to force a backslash into the database, by
> creating an escaped backslash, or am I going completely wrong and it
> wouldn't have worked anyway and I need to deal with this issue on a
> purely SQL basis.
>
Yes, this would be incorrect because the "\" is interpreted as the start
of a string (") followed by an escaped quote (/"). The end of the
string would be the quote at the beginning of what you think should be
the second string.
You need to do str_replace("\\", "\\\\", $string);
Better would be to fix your encryption routine to not generate a single
backslash.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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