[TYPO3-core] RFC #6415: Bug: preg_replace error on php5.2 sometimes resulting in empty pages.

[Martin Kutschker]

Jan-Erik Revsbech schrieb:
>> The error checking in the patch looks all right, haven't tested it,
>> thou. The phpdoc comment change for the return value is not correct, as
>> it still returns "void" and modifies $this->content.
>>
> 
> Right. The attached patch corrects this.

Use this regexp to avoid one extra backtracking item (the ?: for a|area):

/(<(?:a|area).*?href=")(#[^"]*")/i

Does it help bit? Mind that you have to use $1 and $2 after that change.

Another option would be to use an assertion. This should (untested) 
match any string followed by " that is preceeded by an opening a or area 
tag:

/(?<=<(?:a|area).*?href="#)([^"]*)"/i

In this case only '$1"' is needed as replacement string.

And please check preg_last_error() with function_exists() or with a PHP 
version check as TYPO3 (despite the announcements) requires only PHP 5.1 
and it should stay so.

Masi