| Re: Checking equal number of <div> and </div> [message #171293 is a reply to message #171283] |
Thu, 30 December 2010 02:16   |
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richard
Messages: 213
Registered: June 2013
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Senior Member |
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On Wed, 29 Dec 2010 17:19:13 -0800 (PST), jwcarlton wrote:
> Can you guys think of a good way for me to check a string to make sure
> there are an equal number of <div (.*)> and </div>? Then, either add
> or remove </div> tags as needed to make them match?
>
> I'm sure that I could do something like this, but PHP is usually
> pretty insightful so I thought there might be a better way:
>
> // typed up for the example; obviously not in use or tested
> $num_opentag = substr_count($text, '<div');
> $num_closetag = substr_count($text, '</div>');
>
> // More closed than open
> if ($num_closetag > $num_opentag) {
> $difference = $num_closetag - $num_opentag;
> $text = preg_replace("/<\/div/i", "", $text, $difference);
> }
>
> // More open than closed
> if ($num_opentag > $num_closetag) {
> $difference = $num_opentag - $num_closetag;
> $text = preg_replace("/<div (.*)>/i", "", $text, $difference);
> }
a simple way would be to run it through the online validator.
I use Rapid PHP 2010 which shows the matching tags when the cursor is
between them.
So if I have <div><div></div> I'll know about it real quick.
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