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]

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('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

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]

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('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

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.
js*******@attgl obal.net
=============== ===

[Mike]

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8******** *************** *******@comcast .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('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

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.
js*******@attgl obal.net
=============== ===

[Jerry Stuckle]

Mike wrote:

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8******** *************** *******@comcast .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('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

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).

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.
js*******@attgl obal.net
=============== ===

[Mike]

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" <no***@nowhere. com> wrote in message news:gy******** *********@newss vr25.news.prodi gy.net...
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('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

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]

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" <js*******@attg lobal.net> wrote in message
news:O-*************** *****@comcast.c om...
Mike wrote:

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8******** *************** *******@comcast .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('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

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).

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.
js*******@attgl obal.net
=============== ===

[Jerry Stuckle]

Mike wrote:

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" <js*******@attg lobal.net> wrote in message
news:O-*************** *****@comcast.c om...
Mike wrote:

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8****** *************** *********@comca st.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('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

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).

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.

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.
js*******@attgl obal.net
=============== ===

[Jerry Stuckle]

Mike wrote:

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" <js*******@attg lobal.net> wrote in message
news:O-*************** *****@comcast.c om...
Mike wrote:

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8****** *************** *********@comca st.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('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

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).

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.

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.
js*******@attgl obal.net
=============== ===

[Mike]

Some else suggested that. It is in this message thread.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:Dr******** ************@co mcast.com...
Mike wrote:

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" <js*******@attg lobal.net> wrote in message
news:O-*************** *****@comcast.c om...
Mike wrote:

I made the changes in the database records and in the defines. Same thing happens. Everything
equates to a 1.
"Jerry Stuckle" <js*******@attg lobal.net> wrote in message
news:y8****** *************** *********@comca st.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('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

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).

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.

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.
js*******@attgl obal.net
=============== ===