On 1/12/2011 9:00 AM, Donald J. Organ IV wrote:
$blockpattern='/<p*[^>]>.*?/m';
Notice the m after the last / this says it can span multiple
lines....
Good call, I missed the multiple-line thing. In this situation though
you'd actually want /s like:
$blockpattern='/<p[^>]*>.*?<\/p>/s';
From the manual
[http://php.net/manual/en/reference.pcre.pattern.modifiers.php]:
s (PCRE_DOTALL) If this modifier is set, a dot metacharacter in the
pattern matches all characters, including newlines. Without it,
newlines are excluded. This modifier is equivalent to Perl's /s
modifier. A negative class such as [^a] always matches a newline
character, independent of the setting of this modifier.
The /m modifier is used to control how the ^ and $ characters match:
m (PCRE_MULTILINE) By default, PCRE treats the subject string as
consisting of a single "line" of characters (even if it actually
contains several newlines). The "start of line" metacharacter (^)
matches only at the start of the string, while the "end of line"
metacharacter ($) matches only at the end of the string, or before a
terminating newline (unless D modifier is set). This is the same as
Perl. When this modifier is set, the "start of line" and "end of
line" constructs match immediately following or immediately before
any newline in the subject string, respectively, as well as at the
very start and end. This is equivalent to Perl's /m modifier. If
there are no "\n" characters in a subject string, or no occurrences
of ^ or $ in a pattern, setting this modifier has no effect.
And isn't really applicable in this case.
Dan
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