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Posted by Al on 07/17/05 17:07
Al wrote:
> André Medeiros wrote:
>
>> Greetings.
>>
>> I am trying to trim some text containing HTML tags. What I want to do is
>> to trim the text without trimming the tags or html entities like
>> and such, wich completelly break the design.
>>
>> Has anyone succeded on doing such a thing? phpclasses.org won't help :(
>>
>> Thanks in advance.
>> André
>
>
> Consider...
>
> Making a preg pattern to capture everything between tags and then use
> preg_replace_callback() process the "captured text" with the called
> function.
>
> It will work; but it's a bit tricky.
>
> Here is a similiar code snip to get you started...
>
> $pattern= "%<[\w-/]+>%";
>
> $text=
> preg_replace_callback($pattern,
> create_function('$matches', 'return strtolower($matches[0]);'), $text);
>
> This converts all tags to lowercase.
>
> You probably should use a regular callback function rather than creating
> one.
Here is a pattern that will get you close
$pattern= "%(<[\s\S]+?>)([\s\S]+?)(</[\s\S]+?>)%";
The first bracket will get your first tag; second bracket, your text; third, the end tag.
Try this...
$num= preg_match_all("$pattern", $your_string, $matches);
print_r($matches);
I didn't test this; but, you should see all your tags and text neatly in an array.
You can then use foreach($matches[x] $key=>$value) {
your code to trim, etc.
$new_array[$key}= $new_string;
}
From the print_r() you can see what "x should be. And, you'll need to reassemble your $new_array.
Finally, reconstruct your output string with another foreach()
The preg_replace_callback() will do all the foreach() stuff in one line. Your argument for the
callback function will be "x".
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