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08.06.2008 at 01:22AM PDT, ID: 23624913
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9.0

mysql_affected_rows / mysql_num_rows

Asked by psimation in PHP and Databases

HI Experts

OK, so I am a bit baffled now:

I know that when using a SELECT statement, I should use mysql_num_rows to determine if the resultset contains any rows, but here is what is baffling me:

It seems that while I was a bit absent minded, I produced the following code, and only saw it now when I re-examined some other code. What baffles me is that this code snippet is producing the expected results, even though it shouldn't!

Am I missing something? Maybe my code only "works" because I made two mistakes and somehow, in this case, two wrongs are in fact making a right?
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function myDBValidationFunction($ajax)
{
$objResponse7 = new xajaxResponse(); 
 
$link = mysql_connect("myserver:3307", "user","pass");        
mysql_select_db("DB");
$username = mysql_real_escape_string($ajax[username]);
$password = mysql_real_escape_string($ajax[password]);  
 
$sql = "select * from users where username = \"$username\" and password = \"$password\" ";
$result = mysql_query($sql);     
if (mysql_affected_rows()){
$_SESSION[authed] = "true";
$myrow = mysql_fetch_assoc($result);
$_SESSION[name] = $myrow[name];
$_SESSION[uid] = $myrow[id];
$_SESSION[level] = $myrow[level];
$objResponse7->loadCommands(myDBReadFunction());
} elseif(mysql_affected_rows() == "0") {
$_SESSION[authed] = "false";
$objResponse7->loadCommands(myDBLoginFunction());	
}
return $objResponse7;
}
 
 
[+][-]08.06.2008 at 01:34AM PDT, ID: 22168143

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[+][-]08.06.2008 at 01:36AM PDT, ID: 22168151

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[+][-]08.06.2008 at 01:38AM PDT, ID: 22168157

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[+][-]08.06.2008 at 02:26AM PDT, ID: 22168355

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[+][-]08.06.2008 at 03:11AM PDT, ID: 22168563

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[+][-]08.06.2008 at 03:19AM PDT, ID: 22168596

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[+][-]08.06.2008 at 04:15AM PDT, ID: 22168902

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[+][-]08.06.2008 at 04:35AM PDT, ID: 22168992

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[+][-]08.06.2008 at 04:37AM PDT, ID: 22169005

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About this solution

Zone: PHP and Databases
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Solution Provided By: angelIII
Participating Experts: 2
Solution Grade: A
 
 
[+][-]08.06.2008 at 03:46PM PDT, ID: 22175980

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