| Re: store backslash in mysql database [message #170645 is a reply to message #170643] |
Sat, 13 November 2010 03:28   |
Jerry Stuckle
Messages: 2598
Registered: September 2010
Karma:
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Senior Member |
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On 11/12/2010 9:13 PM, Magno wrote:
> On 11/12/2010 07:03 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.
>>
>
> Are you using MySQL? Then try mysql_real_escape_string();, that one will
> do the filtering to allow anything inside.
>
> You should consider also using PDO.
mysql_real_escape_string() won't change backslashes. It has no way to
know if, for instance, "\n" is a newline character or a backslash and an
n. mysql_real_escape_string() is for single quotes (SQL string
start/end character) and the like, depending on the charset.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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