Re: [PHP] verify data in fields
On Sun, Mar 8, 2009 at 4:52 PM, PJ af.gour...@videotron.ca wrote: Ashley Sheridan wrote: On Sun, 2009-03-08 at 10:25 -0500, PJ wrote: My mysql table contains data. But I don't know how to verify what exactly is the data... is it an array, an integer, an alphanumeric character or what? vardump($whatever) returns null; the structure of the table is no null for the column fields and has been filled like this: $autoid = 1; $test = $_POST['categoriesIN']; // this can be several selections from form $tstring = implode(',' , $test); echo $tstring.'br /'; $insert_category = INSERT INTO book_categories (book_id, categories_id) VALUES ($autoid, $tstring.); mysql_query($insert_category,$db); retrieval of data is: from SELECT ...snip... LEFT JOIN book_publisher as abc ON b.id = abc.bookID LEFT JOIN publishers AS c ON abc.publishers_id = c.id LEFT JOIN book_categories AS d ON b.id = d.book_id LEFT JOIN categories AS e ON d.categories_id = e.id I have included the publisher stuff - it works, whereas the category stuff does not... Surely if it is your table, you already know what types of data each field contains? I did and do.. I just was not getting the output I was expecting...so I panicked and looked for ways to verify all... bit, by bit I went over all my little lessons of the past weeks and ... of course, taking my sweet time and lack of knowledge it took me a while to figure out that the problem was a missing SELECT table.column from the query. When I found the error, everything fell into place. But there remains the problem of how to select and display several categories from the query. If there isi only one category, there is no problem; with more than one I can't figure out how to retrieve it without the output showing as many entries for the same book as there are categories. Everything is output (echoed) correctly but the books are echoed in their entirety along with the category... what could I post to analyse the prolem. I'm sure it's something simple, like imploding the array so it isn't repeated... ?? I think you'll probably have to use an ORDER BY clause in your query, and only output a new book name when it changes during iteration. For instance: 1. grab book categories (book id, book name, category id, category name) with a JOIN 2. set last book name to (empty string) 3. for each row in the result set 3a. if book name is different than last book name, output it 3b. output category 3c. next HTH, -- // Todd -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] verify data in fields
My mysql table contains data. But I don't know how to verify what exactly is the data... is it an array, an integer, an alphanumeric character or what? vardump($whatever) returns null; the structure of the table is no null for the column fields and has been filled like this: $autoid = 1; $test = $_POST['categoriesIN']; // this can be several selections from form $tstring = implode(',' , $test); echo $tstring.'br /'; $insert_category = INSERT INTO book_categories (book_id, categories_id) VALUES ($autoid, $tstring.); mysql_query($insert_category,$db); retrieval of data is: from SELECT ...snip... LEFT JOIN book_publisher as abc ON b.id = abc.bookID LEFT JOIN publishers AS c ON abc.publishers_id = c.id LEFT JOIN book_categories AS d ON b.id = d.book_id LEFT JOIN categories AS e ON d.categories_id = e.id I have included the publisher stuff - it works, whereas the category stuff does not... -- unheralded genius: A clean desk is the sign of a dull mind. - Phil Jourdan --- p...@ptahhotep.com http://www.ptahhotep.com http://www.chiccantine.com/andypantry.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] verify data in fields
On Sun, 2009-03-08 at 10:25 -0500, PJ wrote: My mysql table contains data. But I don't know how to verify what exactly is the data... is it an array, an integer, an alphanumeric character or what? vardump($whatever) returns null; the structure of the table is no null for the column fields and has been filled like this: $autoid = 1; $test = $_POST['categoriesIN']; // this can be several selections from form $tstring = implode(',' , $test); echo $tstring.'br /'; $insert_category = INSERT INTO book_categories (book_id, categories_id) VALUES ($autoid, $tstring.); mysql_query($insert_category,$db); retrieval of data is: from SELECT ...snip... LEFT JOIN book_publisher as abc ON b.id = abc.bookID LEFT JOIN publishers AS c ON abc.publishers_id = c.id LEFT JOIN book_categories AS d ON b.id = d.book_id LEFT JOIN categories AS e ON d.categories_id = e.id I have included the publisher stuff - it works, whereas the category stuff does not... -- unheralded genius: A clean desk is the sign of a dull mind. - Phil Jourdan --- p...@ptahhotep.com http://www.ptahhotep.com http://www.chiccantine.com/andypantry.php Surely if it is your table, you already know what types of data each field contains? Ash www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] verify data in fields
Ashley Sheridan wrote: On Sun, 2009-03-08 at 10:25 -0500, PJ wrote: My mysql table contains data. But I don't know how to verify what exactly is the data... is it an array, an integer, an alphanumeric character or what? vardump($whatever) returns null; the structure of the table is no null for the column fields and has been filled like this: $autoid = 1; $test = $_POST['categoriesIN']; // this can be several selections from form $tstring = implode(',' , $test); echo $tstring.'br /'; $insert_category = INSERT INTO book_categories (book_id, categories_id) VALUES ($autoid, $tstring.); mysql_query($insert_category,$db); retrieval of data is: from SELECT ...snip... LEFT JOIN book_publisher as abc ON b.id = abc.bookID LEFT JOIN publishers AS c ON abc.publishers_id = c.id LEFT JOIN book_categories AS d ON b.id = d.book_id LEFT JOIN categories AS e ON d.categories_id = e.id I have included the publisher stuff - it works, whereas the category stuff does not... -- unheralded genius: A clean desk is the sign of a dull mind. - Phil Jourdan --- p...@ptahhotep.com http://www.ptahhotep.com http://www.chiccantine.com/andypantry.php Surely if it is your table, you already know what types of data each field contains? Ash www.ashleysheridan.co.uk I did and do.. I just was not getting the output I was expecting...so I panicked and looked for ways to verify all... bit, by bit I went over all my little lessons of the past weeks and ... of course, taking my sweet time and lack of knowledge it took me a while to figure out that the problem was a missing SELECT table.column from the query. When I found the error, everything fell into place. But there remains the problem of how to select and display several categories from the query. If there isi only one category, there is no problem; with more than one I can't figure out how to retrieve it without the output showing as many entries for the same book as there are categories. Everything is output (echoed) correctly but the books are echoed in their entirety along with the category... what could I post to analyse the prolem. I'm sure it's something simple, like imploding the array so it isn't repeated... ?? -- unheralded genius: A clean desk is the sign of a dull mind. - Phil Jourdan --- p...@ptahhotep.com http://www.ptahhotep.com http://www.chiccantine.com/andypantry.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] verify data in fields
Ash certainly does raise an interesting point. :) Couldn't you just use DESCRIBE or EXPLAIN the tables through MySQL? On Sun, Mar 8, 2009 at 4:35 PM, Ashley Sheridan a...@ashleysheridan.co.ukwrote: On Sun, 2009-03-08 at 10:25 -0500, PJ wrote: My mysql table contains data. But I don't know how to verify what exactly is the data... is it an array, an integer, an alphanumeric character or what? vardump($whatever) returns null; the structure of the table is no null for the column fields and has been filled like this: $autoid = 1; $test = $_POST['categoriesIN']; // this can be several selections from form $tstring = implode(',' , $test); echo $tstring.'br /'; $insert_category = INSERT INTO book_categories (book_id, categories_id) VALUES ($autoid, $tstring.); mysql_query($insert_category,$db); retrieval of data is: from SELECT ...snip... LEFT JOIN book_publisher as abc ON b.id = abc.bookID LEFT JOIN publishers AS c ON abc.publishers_id = c.id LEFT JOIN book_categories AS d ON b.id = d.book_id LEFT JOIN categories AS e ON d.categories_id = e.id I have included the publisher stuff - it works, whereas the category stuff does not... -- unheralded genius: A clean desk is the sign of a dull mind. - Phil Jourdan --- p...@ptahhotep.com http://www.ptahhotep.com http://www.chiccantine.com/andypantry.php Surely if it is your table, you already know what types of data each field contains? Ash www.ashleysheridan.co.uk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php