Hello
I'm new on this forum but I have a big problem. I've installed Subversion 1.1.1 and Apache 2.0.52 on a HP-UX. This is the uname:
HP-UX xxxx B.11.11 U 9000/800 4169945236 unlimited-user license
Now I must to install a software to browse the svn repositories. My choice is Viewcvs.
... (3 Replies)
I've got a problem i'm hoping other more experienced programmers have had to deal with sometime in their careers and can help me: how to get fullnames that were chunked together into one field in an old database into separate more meaningful fields.
I'd like to get the records that nicely fit... (2 Replies)
Please help... i'm new to this job and new to unix as well..... i'm trying to install apache 2.2.6 it's installed on one server... i need to install it on another server... my clue was to maybe use the fetch command... please help.....for example..... apache is on 69.50.132.14.... and it needs to... (1 Reply)
i rue the day that my server manager and i parted company... the start of a long journey.... :(
sometimes i find myself daydreaming about the days when i could say... "this dont work, can u fix it?".... and 2 mins later it worked! i have a new way of "cursing" at ppls.... i just say "failed... (10 Replies)
Dear friends out there, i hope u'll have enough time to read this problem of mine and try to help me solve it. well, i've been a long time user of microsoft products and happened to come across FreeBSD when one fellow referred me to it saying that it was a wonderful OS which one could use for web... (6 Replies)
Hello there ppl,
I thought my question would qualify to be posted in this forum and in Shell scripting forum.
And I swear to God.. there is no discussion on this exact topic anywhere else on the web!
So my script on BASH uses 2 commands:
1) date -d "Fri Mar 06 10:18:16 UTC 2009" +%s
... (1 Reply)
same old story, we have an important very old app running on SCO 5, box is only on LAN and as such was never updated by anyone etc.. box is nearing its end of life in a bad way (currently experiencing some SCSI issues) and it's time to do something when good advice of "lets upgrade" for years was... (1 Reply)
Hello Ex-Sun fellows,
i've been tasked to install a bran spanking new AI Solaris 11.1 server for our Oracle park.
With the documentation this is what's running and what's working.
T5120 2 oracle VM's (one ldom on each disk)
One with a Solaris 11.1 repo, AI server.
One for testing... (0 Replies)
Discussion started by: maverick72
0 Replies
LEARN ABOUT PHP
bindec
BINDEC(3) 1 BINDEC(3)bindec - Binary to decimalSYNOPSIS
number bindec (string $binary_string)
DESCRIPTION
Returns the decimal equivalent of the binary number represented by the $binary_string argument.
bindec(3) converts a binary number to an integer or, if needed for size reasons, float.
bindec(3) interprets all $binary_string values as unsigned integers. This is because bindec(3) sees the most significant bit as another
order of magnitude rather than as the sign bit.
PARAMETERS
o $binary_string
- The binary string to convert
Warning
The parameter must be a string. Using other data types will produce unexpected results.
RETURN VALUES
The decimal value of $binary_string
EXAMPLES
Example #1
bindec(3) example
<?php
echo bindec('110011') . "
";
echo bindec('000110011') . "
";
echo bindec('111');
?>
The above example will output:
51
51
7
Example #2
bindec(3) interprets input as unsigned integers
<?php
/*
* The lesson from this example is in the output
* rather than the PHP code itself.
*/
$magnitude_lower = pow(2, (PHP_INT_SIZE * 8) - 2);
p($magnitude_lower - 1);
p($magnitude_lower, 'See the rollover? Watch it next time around...');
p(PHP_INT_MAX, 'PHP_INT_MAX');
p(~PHP_INT_MAX, 'interpreted to be one more than PHP_INT_MAX');
if (PHP_INT_SIZE == 4) {
$note = 'interpreted to be the largest unsigned integer';
} else {
$note = 'interpreted to be the largest unsigned integer
(18446744073709551615) but skewed by float precision';
}
p(-1, $note);
function p($input, $note = '') {
echo "input: $input
";
$format = '%0' . (PHP_INT_SIZE * 8) . 'b';
$bin = sprintf($format, $input);
echo "binary: $bin
";
ini_set('precision', 20); // For readability on 64 bit boxes.
$dec = bindec($bin);
echo 'bindec(): ' . $dec . "
";
if ($note) {
echo "NOTE: $note
";
}
echo "
";
}
?>
Output of the above example on 32 bit machines:
input: 1073741823
binary: 00111111111111111111111111111111
bindec(): 1073741823
input: 1073741824
binary: 01000000000000000000000000000000
bindec(): 1073741824
NOTE: See the rollover? Watch it next time around...
input: 2147483647
binary: 01111111111111111111111111111111
bindec(): 2147483647
NOTE: PHP_INT_MAX
input: -2147483648
binary: 10000000000000000000000000000000
bindec(): 2147483648
NOTE: interpreted to be one more than PHP_INT_MAX
input: -1
binary: 11111111111111111111111111111111
bindec(): 4294967295
NOTE: interpreted to be the largest unsigned integer
Output of the above example on 64 bit machines:
input: 4611686018427387903
binary: 0011111111111111111111111111111111111111111111111111111111111111
bindec(): 4611686018427387903
input: 4611686018427387904
binary: 0100000000000000000000000000000000000000000000000000000000000000
bindec(): 4611686018427387904
NOTE: See the rollover? Watch it next time around...
input: 9223372036854775807
binary: 0111111111111111111111111111111111111111111111111111111111111111
bindec(): 9223372036854775807
NOTE: PHP_INT_MAX
input: -9223372036854775808
binary: 1000000000000000000000000000000000000000000000000000000000000000
bindec(): 9223372036854775808
NOTE: interpreted to be one more than PHP_INT_MAX
input: -1
binary: 1111111111111111111111111111111111111111111111111111111111111111
bindec(): 18446744073709551616
NOTE: interpreted to be the largest unsigned integer
(18446744073709551615) but skewed by float precision
NOTES
Note
The function can convert numbers that are too large to fit into the platforms integer type, larger values are returned as float in
that case.
SEE ALSO decbin(3), octdec(3), hexdec(3), base_convert(3).
PHP Documentation Group BINDEC(3)