file locking

[Bert]

I am new to php and am on chapter 2 PHP and MySQL by Welling and Thomson.

When executing the code from the example to write the output data string:

// open file for appending
@ $fp = fopen("../../orders/orders.txt", "a");

flock($fp, 2);

if (!$fp)
{
echo "<p><strong> Your order could not be processed at this time. "
."Please try again later.</strong></p></body></html>";
exit;
}

fwrite($fp, $outputstring);
flock($fp, 3); //line 56
fclose($fp);

The processorder.php page opens and the screen output is ok. Then I get the
following message below the order echos:

Warning: flock(): supplied argument is not a valid stream resource in
c:\inetpub\wwwroot\phptest\PROCESSORDER.PHP on line 56

Any advice of where I might find information on why I get this message will
be appreciated.

Bert

[Bert]

Sorry, the error occured on the first call to flock as indicated below.
"Bert" <be*********@meckcom.net> wrote in message
news:C4******************@fe07.usenetserver.com...

I am new to php and am on chapter 2 PHP and MySQL by Welling and Thomson.

When executing the code from the example to write the output data string:

// open file for appending
@ $fp = fopen("../../orders/orders.txt", "a");

flock($fp, 2);

if (!$fp) //line 56
{
echo "<p><strong> Your order could not be processed at this time. "
."Please try again later.</strong></p></body></html>";
exit;
}

fwrite($fp, $outputstring);
flock($fp, 3);
fclose($fp);

The processorder.php page opens and the screen output is ok. Then I get the following message below the order echos:

Warning: flock(): supplied argument is not a valid stream resource in
c:\inetpub\wwwroot\phptest\PROCESSORDER.PHP on line 56

Any advice of where I might find information on why I get this message will be appreciated.

Bert

[jn]

"Bert" <be*********@meckcom.net> wrote in message
news:C4******************@fe07.usenetserver.com...

I am new to php and am on chapter 2 PHP and MySQL by Welling and Thomson.

When executing the code from the example to write the output data string:

// open file for appending
@ $fp = fopen("../../orders/orders.txt", "a");

flock($fp, 2);

if (!$fp)
{
echo "<p><strong> Your order could not be processed at this time. "
."Please try again later.</strong></p></body></html>";
exit;
}

fwrite($fp, $outputstring);
flock($fp, 3); //line 56
fclose($fp);

The processorder.php page opens and the screen output is ok. Then I get the following message below the order echos:

Warning: flock(): supplied argument is not a valid stream resource in
c:\inetpub\wwwroot\phptest\PROCESSORDER.PHP on line 56

Any advice of where I might find information on why I get this message will be appreciated.

Bert

That error means the file couldn't be opened.

Put that flock() after your if(!$fp) block, and you will probably see your
custom error message.

[Garp]

"jn" <us********************************@jasonnorris.ne t> wrote in message
news:R%*********************@twister.tampabay.rr.c om...

"Bert" <be*********@meckcom.net> wrote in message
news:C4******************@fe07.usenetserver.com...

I am new to php and am on chapter 2 PHP and MySQL by Welling and Thomson.

When executing the code from the example to write the output data string:

// open file for appending
@ $fp = fopen("../../orders/orders.txt", "a");

<snip>

The processorder.php page opens and the screen output is ok. Then I get

the

following message below the order echos:

Warning: flock(): supplied argument is not a valid stream resource in
c:\inetpub\wwwroot\phptest\PROCESSORDER.PHP on line 56

Any advice of where I might find information on why I get this message

will

be appreciated.

Bert

That error means the file couldn't be opened.

Put that flock() after your if(!$fp) block, and you will probably see your
custom error message.

You're using a relative path, so you might like to check where you are - you
might be surprised. Also check file/directory permissions - your web server
account needs to be able to access the file.

Garp