Problem with AND &

[Mike]

I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
with X00 in it. Then I have define statements with X01 in it.

define('CERTACC ESS_MEDALS', x01);

Then I run the data through a function

function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
//AND = 1 IF BOTH are 1
return $security_byte And $securitylevel_ bit; }

if(SecurityLeve l_Check($record Set_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {


No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.

PLEASE throw me a bone of a hint at what I am doing wrong.

Thanks.

Mike

[noone]

Re: Problem with AND &

Mike wrote:[color=blue]
> I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
> with X00 in it. Then I have define statements with X01 in it.
>
> define('CERTACC ESS_MEDALS', x01);
>
> Then I run the data through a function
>
> function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
> //AND = 1 IF BOTH are 1
> return $security_byte And $securitylevel_ bit; }
>
> if(SecurityLeve l_Check($record Set_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>
>
> No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
> figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>
> PLEASE throw me a bone of a hint at what I am doing wrong.
>
> Thanks.
>
> Mike
>
>[/color]

Take a look at the PACK/UNPACK functions in PHP to unpack and convert
the data to a number and do the comparison.

http://us2.php.net/manual/en/function.pack.php

http://us2.php.net/manual/en/function.unpack.php

M.

[Jerry Stuckle]

Re: Problem with AND &

Mike wrote:[color=blue]
> I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
> with X00 in it. Then I have define statements with X01 in it.
>
> define('CERTACC ESS_MEDALS', x01);
>
> Then I run the data through a function
>
> function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
> //AND = 1 IF BOTH are 1
> return $security_byte And $securitylevel_ bit; }
>
> if(SecurityLeve l_Check($record Set_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>
>
> No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
> figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>
> PLEASE throw me a bone of a hint at what I am doing wrong.
>
> Thanks.
>
> Mike
>
>[/color]

x01 is a string containing the characters "x', '0' and '1'.

0x01 is a one (or more) byte value with the lowest order bit on (and the
rest off).


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.


"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:y8ydnXXKi4 H453jenZ2dnUVZ_ sSdnZ2d@comcast .com...
Mike wrote:[color=blue]
> I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
> with X00 in it. Then I have define statements with X01 in it.
>
> define('CERTACC ESS_MEDALS', x01);
>
> Then I run the data through a function
>
> function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
> //AND = 1 IF BOTH are 1
> return $security_byte And $securitylevel_ bit; }
>
> if(SecurityLeve l_Check($record Set_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>
>
> No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
> figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>
> PLEASE throw me a bone of a hint at what I am doing wrong.
>
> Thanks.
>
> Mike
>
>[/color]

x01 is a string containing the characters "x', '0' and '1'.

0x01 is a one (or more) byte value with the lowest order bit on (and the
rest off).


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Jerry Stuckle]

Re: Problem with AND &amp;

Mike wrote:[color=blue]
> I made the changes in the database records and in the defines. Same thing happens. Everything
> equates to a 1.
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:y8ydnXXKi4 H453jenZ2dnUVZ_ sSdnZ2d@comcast .com...
> Mike wrote:
>[color=green]
>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>with X00 in it. Then I have define statements with X01 in it.
>>
>>define('CERTA CCESS_MEDALS', x01);
>>
>>Then I run the data through a function
>>
>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>//AND = 1 IF BOTH are 1
>>return $security_byte And $securitylevel_ bit; }
>>
>>if(SecurityLe vel_Check($reco rdSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>
>>
>>No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>
>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>
>>Thanks.
>>
>>Mike
>>
>>[/color]
>
>
> x01 is a string containing the characters "x', '0' and '1'.
>
> 0x01 is a one (or more) byte value with the lowest order bit on (and the
> rest off).
>
>[/color]

Also, "and" is a logical and, not a bit and. Any non-zero value will be
true.

If you need more help, I suggest you post all the failing code - not
just a line or two.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;

I changed the function code to the following but there was no change.


function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
//AND = 1 IF BOTH are 1
$binarybyte = pack("n", $security_byte) ;
$binarybit = pack("n", $securitylevel_ bit);
echo "<P>SecurityLev el_Check";
$binanswer = $security_byte AND $securitylevel_ bit;
$binanswer2 = $binarybyte AND $binarybit;
echo "<P>nonbin byte=".$securit y_byte." /bit=".$security level_bit." /nonbin result is ".$binanswe r;
echo "<P>bin byte=".$binaryb yte." /bit=".$binarybi t." / bin result is ".(int)$binansw er2;
return $security_byte AND $securitylevel_ bit; }


I also changed all x00 to 0x00 for all definitions of hex data. What am I doing wrong?

Results are

SecurityLevel_C heck

nonbin byte=xFE /bit=2 /nonbin result is xFE

bin byte=







"noone" <noone@nowhere. com> wrote in message news:gyeFf.2225 2$Jd.8308@newss vr25.news.prodi gy.net...
Mike wrote:[color=blue]
> I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
> with X00 in it. Then I have define statements with X01 in it.
>
> define('CERTACC ESS_MEDALS', x01);
>
> Then I run the data through a function
>
> function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
> //AND = 1 IF BOTH are 1
> return $security_byte And $securitylevel_ bit; }
>
> if(SecurityLeve l_Check($record Set_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>
>
> No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
> figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>
> PLEASE throw me a bone of a hint at what I am doing wrong.
>
> Thanks.
>
> Mike
>
>[/color]

Take a look at the PACK/UNPACK functions in PHP to unpack and convert
the data to a number and do the comparison.

http://us2.php.net/manual/en/function.pack.php

http://us2.php.net/manual/en/function.unpack.php

M.

[Mike]

Re: Problem with AND &amp;

Ah, that is why the result that I am getting. I just posted the function that I created.

What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!

Mike


"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
Mike wrote:[color=blue]
> I made the changes in the database records and in the defines. Same thing happens. Everything
> equates to a 1.
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:y8ydnXXKi4 H453jenZ2dnUVZ_ sSdnZ2d@comcast .com...
> Mike wrote:
>[color=green]
>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>with X00 in it. Then I have define statements with X01 in it.
>>
>>define('CERTA CCESS_MEDALS', x01);
>>
>>Then I run the data through a function
>>
>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>//AND = 1 IF BOTH are 1
>>return $security_byte And $securitylevel_ bit; }
>>
>>if(SecurityLe vel_Check($reco rdSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>
>>
>>No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>
>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>
>>Thanks.
>>
>>Mike
>>
>>[/color]
>
>
> x01 is a string containing the characters "x', '0' and '1'.
>
> 0x01 is a one (or more) byte value with the lowest order bit on (and the
> rest off).
>
>[/color]

Also, "and" is a logical and, not a bit and. Any non-zero value will be
true.

If you need more help, I suggest you post all the failing code - not
just a line or two.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Jerry Stuckle]

Re: Problem with AND &amp;

Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

Look at the differences between logical operators and bit operators.

Logical operators deal with one value - true or false. Bit operators
deal with each individual bit in the variable separately.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Jerry Stuckle]

Re: Problem with AND &amp;

Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

I'm also confused why you're using pack() when you're already working on
bits.

What exactly are you trying to do, anyway?


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;

Some else suggested that. It is in this message thread.


"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:DrCdnQAFeb QOIXveRVn-tQ@comcast.com. ..
Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

I'm also confused why you're using pack() when you're already working on
bits.

What exactly are you trying to do, anyway?


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;

Under bitwise operators it has the And & as I am using it. That is what I want.

Ah, I see logical. What I am doing is confusing the name of the operator and the operator itself. I
need to use &, NOT AND!

Okay.

With this code

function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
//AND = 1 IF BOTH are 1
$binarybyte = pack("n", $security_byte) ;
$binarybit = pack("n", $securitylevel_ bit);
echo "<P>SecurityLev el_Check";
$binanswer = $security_byte & $securitylevel_ bit;
$binanswer2 = $binarybyte & $binarybit;
echo "<P>nonbin byte=".$securit y_byte." /bit=".$security level_bit." /nonbin result is ".$binanswe r;
echo "<P>bin byte=".$binaryb yte." /bit=".$binarybi t." / bin result is ".(int)$binansw er2;


I get this output

SecurityLevel_C heck

nonbin byte=xFE /bit=2 /nonbin result is 0

bin byte= /bit= /bin result is 0



the bin byte is unreadsable chars. HOWEVER, I should not be getting a zero result.






"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:WPednXEAf6 sWJnvenZ2dnUVZ_ tidnZ2d@comcast .com...
Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

Look at the differences between logical operators and bit operators.

Logical operators deal with one value - true or false. Bit operators
deal with each individual bit in the variable separately.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;

I am trying to test the setting of bits, each bit representing something that can be done on the
website.


"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:DrCdnQAFeb QOIXveRVn-tQ@comcast.com. ..
Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

I'm also confused why you're using pack() when you're already working on
bits.

What exactly are you trying to do, anyway?


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Jerry Stuckle]

Re: Problem with AND &amp;

Mike wrote:[color=blue]
> Some else suggested that. It is in this message thread.
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:DrCdnQAFeb QOIXveRVn-tQ@comcast.com. ..
> Mike wrote:
>[color=green]
>>Ah, that is why the result that I am getting. I just posted the function that I created.
>>
>>What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>>
>>Mike
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
>>Mike wrote:
>>
>>[color=darkred]
>>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>>equates to a 1.
>>>
>>>
>>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>>news:y8ydnXX Ki4H453jenZ2dnU VZ_sSdnZ2d@comc ast.com...
>>>Mike wrote:
>>>
>>>
>>>
>>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>>with X00 in it. Then I have define statements with X01 in it.
>>>>
>>>>define('CER TACCESS_MEDALS' , x01);
>>>>
>>>>Then I run the data through a function
>>>>
>>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>>//AND = 1 IF BOTH are 1
>>>>return $security_byte And $securitylevel_ bit; }
>>>>
>>>>if(Security Level_Check($re cordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>>
>>>>
>>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>>cannot
>>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>>
>>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>>
>>>>Thanks.
>>>>
>>>>Mike
>>>>
>>>>
>>>
>>>
>>>x01 is a string containing the characters "x', '0' and '1'.
>>>
>>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>>rest off).
>>>
>>>[/color]
>>
>>
>>Also, "and" is a logical and, not a bit and. Any non-zero value will be
>>true.
>>
>>If you need more help, I suggest you post all the failing code - not
>>just a line or two.
>>[/color]
>
>
> I'm also confused why you're using pack() when you're already working on
> bits.
>
> What exactly are you trying to do, anyway?
>
>[/color]

Ah, I found it. No, you shouldn't need to pack your data - it's already
bits.

And please don't top post


A: Because it messes up the order in which people normally read text.
Q: Why?
A: Top-posting.
Q: What is the most annoying thing on usenet?

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;

Okay, start from scratch.


Define code

define('CERTACC ESS_MEMENTRY', 0x01);


Function

function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
//AND = 1 IF BOTH are 1
echo "<P>SecurityLev el_Check";
$binanswer = $security_byte & $securitylevel_ bit;
echo "<P>nonbin byte=".$securit y_byte." /bit=".$security level_bit." /nonbin result is ".$binanswe r;
return $security_byte & $securitylevel_ bit; }


$securitylevel_ bit is the defines like the one above. The $security_byte is the data in the database
record for a person.


Output is
SecurityLevel_C heck

nonbin byte=xFE /bit=2 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=1 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=4 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=8 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=16 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=32 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=xFE /bit=128 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=0x00 /bit=1 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=0x00 /bit=2 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=0x00 /bit=4 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=0x00 /bit=8 /nonbin result is 0

SecurityLevel_C heck

nonbin byte=0x00 /bit=16 /nonbin result is 0






"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:DrCdnQAFeb QOIXveRVn-tQ@comcast.com. ..
Mike wrote:[color=blue]
> Ah, that is why the result that I am getting. I just posted the function that I created.
>
> What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>
> Mike
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
> Mike wrote:
>[color=green]
>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>equates to a 1.
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:y8ydnXXK i4H453jenZ2dnUV Z_sSdnZ2d@comca st.com...
>>Mike wrote:
>>
>>[color=darkred]
>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>with X00 in it. Then I have define statements with X01 in it.
>>>
>>>define('CERT ACCESS_MEDALS', x01);
>>>
>>>Then I run the data through a function
>>>
>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>//AND = 1 IF BOTH are 1
>>>return $security_byte And $securitylevel_ bit; }
>>>
>>>if(SecurityL evel_Check($rec ordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>
>>>
>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>cannot
>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong results.
>>>
>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>
>>>Thanks.
>>>
>>>Mike
>>>
>>>[/color]
>>
>>
>>x01 is a string containing the characters "x', '0' and '1'.
>>
>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>rest off).
>>
>>[/color]
>
>
> Also, "and" is a logical and, not a bit and. Any non-zero value will be
> true.
>
> If you need more help, I suggest you post all the failing code - not
> just a line or two.
>[/color]

I'm also confused why you're using pack() when you're already working on
bits.

What exactly are you trying to do, anyway?


--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[Mike]

Re: Problem with AND &amp;


"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
news:RPOdnanHir JJInveRVn-gg@comcast.com. ..
Mike wrote:[color=blue]
> Some else suggested that. It is in this message thread.
>
>
> "Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
> news:DrCdnQAFeb QOIXveRVn-tQ@comcast.com. ..
> Mike wrote:
>[color=green]
>>Ah, that is why the result that I am getting. I just posted the function that I created.
>>
>>What is a logical AND? I thought both AND and & were. I'll have to relook at the php docs!
>>
>>Mike
>>
>>
>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>news:O--dnZ5sQK4TJXveRV n-hg@comcast.com. ..
>>Mike wrote:
>>
>>[color=darkred]
>>>I made the changes in the database records and in the defines. Same thing happens. Everything
>>>equates to a 1.
>>>
>>>
>>>"Jerry Stuckle" <jstucklex@attg lobal.net> wrote in message
>>>news:y8ydnXX Ki4H453jenZ2dnU VZ_sSdnZ2d@comc ast.com...
>>>Mike wrote:
>>>
>>>
>>>
>>>>I am having a problem getting AND to work. I have a MySQL database field defined as varbinary(8)
>>>>with X00 in it. Then I have define statements with X01 in it.
>>>>
>>>>define('CER TACCESS_MEDALS' , x01);
>>>>
>>>>Then I run the data through a function
>>>>
>>>>function SecurityLevel_C heck($security_ byte, $securitylevel_ bit) {
>>>>//AND = 1 IF BOTH are 1
>>>>return $security_byte And $securitylevel_ bit; }
>>>>
>>>>if(Security Level_Check($re cordSet_cert->fields['certcode_acces s'], CERTACCESS_MEDA L) == 1) {
>>>>
>>>>
>>>>No matter what the values are it always returns a 1. I've looked and looked at the docs and
>>>>cannot
>>>>figure out what I am doing wrong. I tried AND and & and both produce different but wrong
>>>>results.
>>>>
>>>>PLEASE throw me a bone of a hint at what I am doing wrong.
>>>>
>>>>Thanks.
>>>>
>>>>Mike
>>>>
>>>>
>>>
>>>
>>>x01 is a string containing the characters "x', '0' and '1'.
>>>
>>>0x01 is a one (or more) byte value with the lowest order bit on (and the
>>>rest off).
>>>
>>>[/color]
>>
>>
>>Also, "and" is a logical and, not a bit and. Any non-zero value will be
>>true.
>>
>>If you need more help, I suggest you post all the failing code - not
>>just a line or two.
>>[/color]
>
>
> I'm also confused why you're using pack() when you're already working on
> bits.
>
> What exactly are you trying to do, anyway?
>
>[/color]

Ah, I found it. No, you shouldn't need to pack your data - it's already
bits.

And please don't top post


A: Because it messes up the order in which people normally read text.
Q: Why?
A: Top-posting.
Q: What is the most annoying thing on usenet?

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===


Okay. Sorry.

Mike