On Wed, Mar 31, 2010 at 8:46 AM, Ashley Sheridan
<ash@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Wed, 2010-03-31 at 16:50 +0430, Parham Doustdar wrote:
>
>> Andre,
>> The @ operator is used for error catching statements. When you put:
>>
>> @mysql_connect('localhost', 'username', 'password') or die('Could not
>> connect.');
>>
>> If PHP fails to make a connection, the script execution is stopped, and the
>> error message between the apostrophes is given.
>>
>> And, I found out what the problem was; I should have put:
>>
>> if (mysql_num_rows($result))
>>
>> rather than just
>>
>> if ($result)
>>
>> Thanks!
>> ----- Original Message -----
>> From: "Andre Polykanine" <andre@xxxxxxxx>
>> To: "Parham Doustdar" <parham90@xxxxxxxxx>
>> Cc: <php-general@xxxxxxxxxxxxx>
>> Sent: Wednesday, March 31, 2010 4:41 PM
>> Subject: Re: MySQL query not working!
>>
>>
>> > Hello Parham,
>> >
>> > Adding to Ash's question, why to use the @ operator before
>> > mysql_query?
>> > --
>> > With best regards from Ukraine,
>> > Andre
>> > Skype: Francophile; Wlm&MSN: arthaelon @ yandex.ru; Jabber: arthaelon @
>> > jabber.org
>> > Yahoo! messenger: andre.polykanine; ICQ: 191749952
>> > Twitter: m_elensule
>> >
>> > ----- Original message -----
>> > From: Parham Doustdar <parham90@xxxxxxxxx>
>> > To: php-general@xxxxxxxxxxxxx <php-general@xxxxxxxxxxxxx>
>> > Date: Wednesday, March 31, 2010, 2:50:07 PM
>> > Subject: MySQL query not working!
>> >
>> > Hi there,
>> > Here is a snippet of code... that doesn't work for some reason. Please
>> > note
>> > that I have put some
>> >
>> > @mysql_query($query) or die(mysql_error());
>> >
>> > statements, to see if MySQL gives an error. I receive nothing other than
>> > the
>> > file starting to download. This is supposed to be a file download counter:
>> >
>> > [code]
>> > <?php
>> > //connect to the DB
>> > mysql_connect() //There is no problem with the connection so I didn't
>> > include the complete code.
>> >
>> > //The table where the hits are stored.
>> > $table = "files";
>> >
>> > $query = "select * from " . $table . " where filename = '" . $_GET['file']
>> > .
>> > "'";
>> > $result = mysql_query($query);
>> >
>> > if ($result) //Has the file previously been added?
>> > {
>> > $query = "update " . $table . " set hits = hits + 1 where filename = '" .
>> > $_GET['file'] . "'";
>> > @mysql_query($query) or die(mysql_error());
>> > header('location:http://www.qwitter-client.net/' . $_GET['file']);
>> > }
>> > else //it's the first time we're adding this file to the DB.
>> > {
>> > $query = "insert into " . $table . " (filename, hits) values ('" .
>> > $_GET['file'] . "', 1)";
>> > @mysql_query($query) or die(mysql_error());
>> > header('location:http://www.qwitter-client.net/' . $_GET['file']);
>> > }
>> > ?>
>> >
>> >
>> >
>> > --
>> > PHP General Mailing List (http://www.php.net/)
>> > To unsubscribe, visit: http://www.php.net/unsub.php
>> >
>>
>>
>
>
> My understanding of the @ here would be that PHP won't register the
> error, so it won't ever die()
>
> Thanks,
> Ash
> http://www.ashleysheridan.co.uk
>
>
>
Nope. All it does is suppress the error message. Just try it:
<?php
@mysql_connect('localhost', 'baduser', 'badpassword') or die('Could
not connect');
?>
Output:
Could not connect
<?php
@mysql_connect('localhost', 'baduser', 'badpassword') or die('Could
not connect');
?>
Output:
<br />
<b>Warning</b>: mysql_connect() [<a
href='function.mysql-connect'>function.mysql-connect</a>]: Can't
connect to MySQL server on 'localhost' (10061) in <b>PHPDocument1</b>
on line <b>3</b><br />
Could not connect
Andrew
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