Update: I've changed it into
/^(\*|[a-z_,
\(\)0-9]+)[\s]+FROM[\s]+([a-z_\.]+)(\s+)?(WHERE[\s]+(.+))?\s*(LIMIT\s+([0-9]+)\s*,\s*([0-9]+))?\s*(ORDER
BY ([a-z0-9, ]+)?(\s*(DESC|ASC)))?$/Ui
Only problem that on:
SELECT * FROM table WHERE field2='field3' ORDER BY id DESC LIMIT 0,10
it outputs
Array
(
[0] = * FROM table WHERE field2='field3' ORDER BY id DESC LIMIT 0,10
[1] = *
[2] = table
[3] =
[4] = WHERE field2='field3' ORDER BY id DESC
[5] = field2='field3' ORDER BY id DESC
[6] = LIMIT 0,10
[7] = 0
[8] = 10
)
On Fri, Aug 21, 2009 at 9:38 PM, דניאל דנון danondan...@gmail.com wrote:
You all misunderstood my question, please read my replies above...
I'm looking to extract it from a string - *I'm not executing the queries,
I only get them as a string*
And to the topic:
Since everything I found was very complicated to parse, I've crafted my own
preg pattern,
/^(\*|[a-z_, \(\)0-9]+)[\s]+FROM[\s]+([a-z_\.
]+)\s+(WHERE[\s]+(.+)|)\s*(|ORDER BY ([a-z0-9,
])(|\s(DESC|ASC)))\s*(|LIMIT\s+([0-9]+)\s*,\s*([0-9]+))\s*$/Ui
(Assuming this is a SELECT string, and the subject is something similar to:
* FROM table WHERE field2='field3' LIMIT 0,10
(Yes, no SELECT - I've got another function to determine whether its
select, insert, update, delete from - etc, and it returns to query without
the name of the command - SELECT field FROM table = field FROM table)
(Without using joins or things like that)
But I don't have much experience crafting patterns like that - or working
with them so I'd be glad if you think of a better way of doing it,
and problem is since I'm using sub-brackets, its hard to process it
since if there is WHERE and a LIMIT, then LIMIT (...) will be on $result[$n]
(for example),
But if there is no WHERE, then LIMIT (...) will be on $result[$n - 2];
How should I overcome this problem?
2009/8/21 Daevid Vincent dae...@daevid.com
-Original Message-
From: Nisse Engström [mailto:news.nospam.0ixbt...@luden.se]
If you're using MySQL, you can try mysql_field_name()
and see if it gets you anywhere. I don't think it works
on empty results though.
FYI. It will.
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