bitwise operator

[duytin]

Dear All,

 

I want to make a bitwise function but I don't know how to make it.

Suggest that I want to make function my_bitwise($a,$b). I want the result as:

Bits that are set in $a but not $b, and not vice versa.

For example: $a=1010 ; $b=1100

I want result my_bitwise($a,$b)=0010.

Pls hepl me!

Thks in advance!

[genericnumber1]

http://www.php.net/manual/en/language.operators.bitwise.php

 

edit: oh sorry, didn't really read your question all the way through

[Barand]

<?php
$a= 10 ; #1010  
$b= 12 ; #1100 

printf ('%04s',  decbin($a & ~$b));  //--> 0010
?>

 

A and not B

[duytin]

I want to say thanks very much to you! ;D

 

<?php
$a= 10 ; #1010  
$b= 12 ; #1100 

printf ('%04s',  decbin($a & ~$b));  //--> 0010
?>

 

A and not B

[duytin]

How I can define a constant of an array?

Foe example, I want to declaire:

define ("A",array(1,2,3)); (The result I received is a error message  )

[genericnumber1]

You cant, now that was simple.

 

you could serialize() an array in I guess...

[duytin]

Dear Genericnumber1,

 

Can you tell me more detail on serialize()... ???

[genericnumber1]

http://www.php.net/serialize

 

but it's a pretty big pain just for a constant array

[boo_lolly]

How I can define a constant of an array?

Foe example, I want to declaire:

define ("A",array(1,2,3)); (The result I received is a error message  )

 

why would you want to do that?

[duytin]

Hi boo_lolly,

 

I'm trying to make a program this solve the Sudoku. In this programe, I use the array :

array(pow(2,1),pow(2,2),pow(2,3),pow(2,4),pow(2,5),pow(2,6),pow(2,7),pow(2,,pow(2,9))

many times in the program. So, I want to make a constant (not a variable!) represent this array.

[duytin]

Hi boo_lolly,

 

I'm trying to make a program this solve the Sudoku. In this programe, I use the array :

array(pow(2,1),pow(2,2),pow(2,3),pow(2,4),pow(2,5),pow(2,6),pow(2,7),pow(2,,pow(2,9))

many times in the program. So, I want to make a constant (not a variable!) represent this array.

[boo_lolly]

have you tried making this array a variable?

$array = array(pow(2,1),pow(2,2),pow(2,3),pow(2,4),pow(2,5),pow(2,6),pow(2,7),pow(2,,pow(2,9));

 

 

[duytin]

No problem when I use a variable, but it's not a variable naturally!!!

[duytin]

Hi All,

 

I want to get an array of data from the input of the user, for example: X11= 1, X12=5, ....,X99=6. I can make with an input apart but I don't know how to make with an array X[j]!

Pls help me! :'(

[trq]

Pardon?

[duytin]

For example, I want to write a PHP scrip which will:

1. Display an "0" 9X9 sudoku (default value 0 for all 81 squares).

2. The user will input some data in some squares, for example: square(1,1)=1, square(2,3)=5...

3. Transfer all 81 values of the Sudoku in an array, for example:

    for ($i=1;$i<=9;$i++)

 

[duytin]

For example, I want to write a PHP scrip which will:

1. Display an "0" 9X9 sudoku (default value 0 for all 81 squares).

2. The user will input some data in some squares, for example: square(1,1)=1, square(2,3)=5...

3. Transfer all 81 values of the Sudoku in an array, for example:

    for ($i=1;$i<=9;$i++)

    {  for ($j=1;$j<=9;$j++)

        {  Sudoku[$i][$j]=square($i,$j);

        }

    }

4. After that, I will write a program to solve the Sudoku.

[Barand]

the form

<form method='post'>
<?php
for ($r=0; $r<9; $r++) {
    for ($c=0; $c<9; $c++) {
        echo "<input type='text' name='sudoku[$r][$c]' size='3' value='' />";
    }
    echo '<br>';
}
echo "<input type='submit' name='action' value='Submit'>";
?>
</form>

 

Process with

 

$sudoku = $_POST['sudoku'];

[duytin]

Thk u, teacher Barand!

By the way, it seems that there's not remainder function in the PHP? ???

For example: remainder of 5/3 is 2.

[genericnumber1]

there's a modulus operator...

 

5 % 3 is 2

[duytin]

Thks. I'm