Hi all,
I'd like to work with a binary file....
I read the whole file into variable (it conatains binary data from 00-FF):
$fp=fopen($cfg, "r");
$content=fread( $fp,filesize($c fg));
fclose($fp);
// and then I'd like to check if it contains special binary sequence, let's say bytes "00 01
02 03":
$replacestring= "/\x00\x01\x02\x0 3/im";
if (preg_match($re placestring,$co ntent)==0) {
echo("bad input file format");
exit();
}
but i get error message:
<b>Warning</b>: preg_match(): No ending delimiter '/' found in <b>test.bat</b> on
line <b>57</b><br />
I think it is maybe because php uses strings terminated with null, but can i force php to
use strings with predefined length for example? Is there a way to work with strings
containing null characters?
Thank you in advance.
Y. 4 11632
Yandos wrote: Hi all,
I'd like to work with a binary file....
I read the whole file into variable (it conatains binary data from 00-FF):
$fp=fopen($cfg, "r"); $content=fread( $fp,filesize($c fg)); fclose($fp);
// and then I'd like to check if it contains special binary sequence, let's say bytes "00 01 02 03":
$replacestring= "/\x00\x01\x02\x0 3/im";
if (preg_match($re placestring,$co ntent)==0) { echo("bad input file format"); exit(); }
but i get error message:
<b>Warning</b>: preg_match(): No ending delimiter '/' found in <b>test.bat</b> on line <b>57</b><br />
I think it is maybe because php uses strings terminated with null, but can i force php to use strings with predefined length for example? Is there a way to work with strings containing null characters?
Thank you in advance.
Y.
The PCRE library does expect the pattern to be a null-terminate string.
It is capable of looking for \0 though. Instead of the double-quoted
string, use single-quotes instead:
$replacestring= '/\x00\x01\x02\x0 3/im';
Now PCRE will see the escape sequences and correctly compile the regexp.
On Tue, 06 Jun 2006 14:23:24 -0700, Chung Leong wrote: $replacestring= '/\x00\x01\x02\x0 3/im';
Why do you use multi-line matching and what will ignoring case buy you
here?
-- http://www.mgogala.com
"Chung Leong" <ch***********@ hotmail.com> wrote in
news:11******** *************@h 76g2000cwa.goog legroups.com: The PCRE library does expect the pattern to be a null-terminate string. It is capable of looking for \0 though. Instead of the double-quoted string, use single-quotes instead:
$replacestring= '/\x00\x01\x02\x0 3/im';
Now PCRE will see the escape sequences and correctly compile the regexp.
Works great, thank you!
Y.
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Mladen Gogala <go****@sbcglob al.net> wrote in news:pan.2006.0 6.07.07.58.37.7 53254
@sbcglobal.net: On Tue, 06 Jun 2006 14:23:24 -0700, Chung Leong wrote:
$replacestring= '/\x00\x01\x02\x0 3/im';
Why do you use multi-line matching and what will ignoring case buy you here?
Thanks for comment, that's perhaps not necessary, but I'm used to do regexps that way. I'm not a
regexp guru and once something did not worked when I have not used ignore case and multiline
switches, so now I'm using em everywhere - no harm in writing 2 more letters ;) )
Y.
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