stripping specific span tags based on their id

[gerkintrigg]

Is there a way of removing a span from a string of HTML by using it's id?

 

I have this string:

$string='<span id="1">test string</a><span id="2">test string2</a>';

I would like to be able to dynamically remove the html from one or the other tag depending on the user input, which relates to the id.

 

I have tried where commands relating to the id, but it's just not the same as SQL...

 

I'd like something like this (I know the code doesn't work... but you get the idea):

strip_tags($string, where(id=$user_input))

[FaT3oYCG]

preg_replace is what you need then just wrap a function arround it much like the example you provided minus the where() change that for $id and then check for that in the preg string.

[gerkintrigg]

I don't really understand how that would work?

 

something like:

preg_replace('<span id="$user_input"?>?</span>',strip_tags(<span id="$user_input"?>?</span>))

???

[Alex]

Whoops, I made and tested a solution to this problem but forgot to post it 

 

$str = '<span id="1">test string</span><span id="2">test string2</span>';
$input = '1';
$str = preg_replace("~<span id=\"$input\">(.+?)<\/span>~", "$1", $str);
echo $str; // test string<span id="2">test string2</span>

[gerkintrigg]

this post has been immensely useful. Thank you!