you gotta escape the escapes
$b = preg_split('/([\\(\\)])/', $a);
Greetz,
Wico
At 13:13 31-1-01 +0000, [EMAIL PROTECTED] wrote:
>From: [EMAIL PROTECTED]
>Operating system: OpenBSD 2.8
>PHP version: 4.0.4pl1
>PHP Bug Type: PCRE related
>Bug description: preg_split inconsistency
>
>While trying to write a simple Scheme parser in PHP, we encountered this
>problem:
>
>In perl, you can capture the delimiters passed to split() by enclosing the
>portion with brackets, in the regexp. This does not work in PHP.
>
>For example, here is the perl script, and its output:
>
>#!/usr/bin/perl
>use Data::Dumper;
>
>$_ = '(define heshe (if (equal gender "Male") "He" "She")) ';
>@b = split /([\(\)])/;
>print Dumper(@b);
>
>Output:
>$VAR1 = '';
>$VAR2 = '(';
>$VAR3 = 'define heshe ';
>$VAR4 = '(';
>$VAR5 = 'if ';
>$VAR6 = '(';
>$VAR7 = 'equal gender "Male"';
>$VAR8 = ')';
>$VAR9 = ' "He" "She"';
>$VAR10 = ')';
>$VAR11 = '';
>$VAR12 = ')';
>$VAR13 = ' ';
>
>But in PHP:
>
><? $a = '(define heshe (if (equal gender "Male") "He" "She")) ';
>$b = preg_split('/([\(\)])/', $a);
>var_dump($b); ?>
>
>Outputs:
>array(7) {
> [0]=>
> string(0) ""
> [1]=>
> string(13) "define heshe "
> [2]=>
> string(3) "if "
> [3]=>
> string(19) "equal gender "Male""
> [4]=>
> string(11) " "He" "She""
> [5]=>
> string(0) ""
> [6]=>
> string(1) " "
>}
>
>The brackets aren't captured, which makes the Scheme parsing a bit
>difficult :-) There are other ways to do this, of course, but the
>preg_split() would be the simplest and the most efficient way to do it, as
>far as we can see.
>
>I noticed that the PCRE libraries are only at version 3.0 in PHP, and that
>3.4 is available from the main site. I'll try updating to that, and see
>if it solves this.
>
>
>--
>Edit Bug report at: http://bugs.php.net/?id=9029&edit=1
>
>
>
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