Re: [PHP-DB] Where does the mysqli extension find the default connection charset?
Hello and thanks for your help, However, my question was: *how* is it package dependent? You said that it uses libmysql. In this case, which file controls the configuration of libmysql? Or is it at compilation time that the choice is made? I know that to be of the safe side, I should explicitly set the character set. Jean-Noel On 5/2/07, Georg Richter [EMAIL PROTECTED] wrote: Jean-Noël Rivasseau wrote: Hello there, I'd like to know which configuration file or setting is used by PHP mysqli extension to know the default charset connection to the database. mysqli (and also mysql) extension uses the default character set for libmysql This can be package dependend: Several distros deliver utf8 as default, others latin1. To be on the safe side, you should call mysqli_set_charset($link, utf8/latin1/whatever) to set the character set for each connection. /Georg -- Georg Richter, Development Manager - Connectors Client Connectivity MySQL GmbH, Radlkoferstr. 2, D-81373 München, www.mysql.com Geschäftsführer: Hans von Bell, Kaj Arnö - HRB München 162140
[PHP-DB] weird comparsion
Hello, Why does anything compared to 0 return true? I know it might seem to be a bit off-topic, but for me it is important for detecting if NULL value in table has been changed (for example NULL is changed to 0). if (foo==0) echo(foo equals to 0); OKi98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] weird comparsion
http://nl3.php.net/manual/en/language.operators.comparison.php try using === (3x =) for comparison - Mike OKi98 schreef: Hello, Why does anything compared to 0 return true? I know it might seem to be a bit off-topic, but for me it is important for detecting if NULL value in table has been changed (for example NULL is changed to 0). if (foo==0) echo(foo equals to 0); OKi98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] weird comparsion
try comparing the type: if(0 === 0)echo 'Its not equal'; if(0 === 0)echo 'Its equal'; OKi98 wrote: Hello, Why does anything compared to 0 return true? I know it might seem to be a bit off-topic, but for me it is important for detecting if NULL value in table has been changed (for example NULL is changed to 0). if (foo==0) echo(foo equals to 0); OKi98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] weird comparsion
Mike van Hoof wrote: http://nl3.php.net/manual/en/language.operators.comparison.php try using === (3x =) for comparison - Mike OKi98 schreef: Hello, Why does anything compared to 0 return true? I know it might seem to be a bit off-topic, but for me it is important for detecting if NULL value in table has been changed (for example NULL is changed to 0). if (foo==0) echo(foo equals to 0); OKi98 __ Informace od NOD32 2235 (20070502) __ Tato zprava byla proverena antivirovym systemem NOD32. http://www.nod32.cz I know about identity operator (===) but with == operator 0 is false and foo is true, try this: $foo=0; $bar=bar; if ($foo) echo($foo is true, ); else echo($foo is false, ); if ($bar) echo($bar is true, ); else echo($bar is false, ); if ($foo==$bar) echo($foo==$bar); returns 0 is false, bar is true, 0==$bar OKi98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DB] weird comparsion
On 03 May 2007 12:30, OKi98 wrote: I know about identity operator (===) but with == operator 0 is false and foo is true No, that's not correct. , try this: $foo=0; $bar=bar; if ($foo) echo($foo is true, ); else echo($foo is false, ); if ($bar) echo($bar is true, ); else echo($bar is false, ); if ($foo==$bar) echo($foo==$bar); returns 0 is false, bar is true, 0==$bar That's because you've got loads of implicit type conversions going on there, so you're not comparing like with like. For if ($foo) ... and if ($bar) ...: within the context of the if(), both $foo and $bar are implicitly converted to Boolean: - (bool)0 is FALSE - (bool)any non-empty() string is TRUE On the other hand, for if ($foo==$bar) ...: in the context of the == comparison, $bar is converted to a number, and any string not beginning with a numeric character converts to numeric zero -- so you get a comparison of zero with zero, which is, of course, TRUE! Or, in other words, (bool)$foo!==(bool)$bar, BUT (int)$foo===(int)$bar It's exactly when you *don't* want this kind of automatic type-conversion shenanigans going on that you should use the === operator to make your intent entirely clear -- otherwise you have to be extremely aware of the context in which you are evaluating your variables in order to avoid hidden surprises like this. Cheers! Mike - Mike Ford, Electronic Information Services Adviser, JG125, The Headingley Library, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: [EMAIL PROTECTED] Tel: +44 113 812 4730 Fax: +44 113 812 3211 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm
[PHP-DB] PDOStatement and fetchAll()
Howdy, I'm working with PDOStatement-fetchAll() and I need it to return the Object I specify. I've got it working with individual rows and PDOStatement-fetchObject(), i'm able to tell it what class to load the variables into with this function and if I read correctly I should also be able to do this with fetchAll() also. The http://au.php.net/manual/en/function.PDOStatement-fetchAll.php page says I should be able to use the $fetch_style outlined on the fetch() page, but its not very clear hot to specify which class to load. For example, this code: return $queryData-fetchObject(get_class($this)); does exactly what i want it to, puts the variables into the class I specify so I can handle the data with custom methods.. I need to do the same with a fetchAll. I have it returning with an anonymous object (called stdClass, the default) but would like to know how to specify the object to call as above, as I need the flexibility of custom classes with these result sets also. I've experimented a little with the fetchAll() method, for example: return $queryData-fetchAll(PDO::FETCH_CLASS|PDO::FETCH_CLASSTYPE); and return $queryData-fetchAll(PDO::FETCH_CLASS|get_class($this)); but both still only return the stdClass object.. Can someone explain how to do this with fetchAll() a little more clearly? Cheers, James -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] weird comparsion
Ford, Mike wrote: On 03 May 2007 12:30, OKi98 wrote: I know about identity operator (===) but with == operator 0 is false and foo is true No, that's not correct. , try this: $foo=0; $bar=bar; if ($foo) echo($foo is true, ); else echo($foo is false, ); if ($bar) echo($bar is true, ); else echo($bar is false, ); if ($foo==$bar) echo($foo==$bar); returns 0 is false, bar is true, 0==$bar That's because you've got loads of implicit type conversions going on there, so you're not comparing like with like. For if ($foo) ... and if ($bar) ...: within the context of the if(), both $foo and $bar are implicitly converted to Boolean: - (bool)0 is FALSE - (bool)any non-empty() string is TRUE On the other hand, for if ($foo==$bar) ...: in the context of the == comparison, $bar is converted to a number, and any string not beginning with a numeric character converts to numeric zero -- so you get a comparison of zero with zero, which is, of course, TRUE! oh I didnt know that, I thought the number will be converted into a string. Thanks alot. I have one more question but I ask in separate thread :) Oki98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DB] variable with NULL value
Hi, one more question. Why the variable, that contains NULL value appears to be not set. When you try to echo it the php does not produce warning about using undefined variable. //$connection contains database connection handler $result=mysql_query(select NULL as value,$connection); $tmp=mysql_fetch_array($result); $foo=$tmp[value]; if (!isset($foo)) echo(\$foo is not set but does not produce warning -$foo-); OKi98 -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] variable with NULL value
OKi98 wrote: Hi, one more question. Why the variable, that contains NULL value appears to be not set. When you try to echo it the php does not produce warning about using undefined variable. //$connection contains database connection handler $result=mysql_query(select NULL as value,$connection); $tmp=mysql_fetch_array($result); $foo=$tmp[value]; if (!isset($foo)) echo(\$foo is not set but does not produce warning -$foo-); OKi98 Someone correct me if I'm wrong but it appears that you should be using if(!isset($tmp[value]) before assigning to $foo if you want to ensure that $foo will, indeed, be set. -- Thanks, Jim -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] variable with NULL value
James Gadrow wrote: OKi98 wrote: Hi, one more question. Why the variable, that contains NULL value appears to be not set. When you try to echo it the php does not produce warning about using undefined variable. //$connection contains database connection handler $result=mysql_query(select NULL as value,$connection); $tmp=mysql_fetch_array($result); $foo=$tmp[value]; if (!isset($foo)) echo(\$foo is not set but does not produce warning -$foo-); OKi98 Someone correct me if I'm wrong but it appears that you should be using if(!isset($tmp[value]) before assigning to $foo if you want to ensure that $foo will, indeed, be set. Yeh - you need to check before you do the assignment. -- Postgresql php tutorials http://www.designmagick.com/ -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
