PHP preg_replace：从img以外的所有标签中删除style =“ ..”

Question

It is the reverse of : PHP preg_replace: remove style=".." from img tags

Im trying to find an expression for preg_replace, that deletes all inline css styles except for images. For example, I have this text:

<img attribut="value" style="myCustom" attribut='value' style='myCustom' /> <input attribut="value" style="myCustom" attribut='value' style='myCustom'> <span attribut="value" style="myCustom" attribut='value' style='myCustom'> style= </span>

And I need to make it look like:

<img attribut="value" style="myCustom" attribut='value' style='myCustom' /> <input attribut="value" "myCustom" attribut='value' 'myCustom'> <span attribut="value" "myCustom" attribut='value' 'myCustom'> style= </span>

or like this:

<img attribut="value" style="myCustom" attribut='value' style='myCustom' /> <input attribut="value" attribut='value'> <span attribut="value" attribut='value'> style= </span>

It might looks like this

preg_replace('/(\<img[^>]+)(style\=\"[^\"]+\")([^>]+)(>)/', '${1}${3}${4}', $article->text)

Answer 1

The regex issue can be answered with a simple negative assertion:

preg_replace('/(<(?!img)\w+[^>]+)(style="[^"]+")([^>]*)(>)/', '${1}${3}${4}', $article->text)

And a simpler approach might be using querypath (rather than fiddly DOMDocument):

FORACH htmlqp($html)->find("*")->not("img") EACH $el->removeAttr("style");

Answer 2

This does as you've asked

$string = '<img attribut="value" style="myCustom" attribut=\'value\' style=\'myCustom\' /> <input attribut="value" style="myCustom" attribut=\'value\' style=\'myCustom\'> <span attribut="value" style="myCustom" attribut=\'value\' style=\'myCustom\'> style= </span>';

preg_match_all('/\<img.+?\/>/', $string, $images);

foreach ($images[0] as $i => $image) {    
    $string = str_replace($image,'--image'.$i.'--', $string);
}

$string = preg_replace(array('/style=[\'\"].+?[\'\"]/','/style=/'), '', $string);

foreach ($images[0] as $i => $image) {
    $string = str_replace('--image'.$i.'--',$image, $string);
}

OUTPUTS

<img attribut="value" style="myCustom" attribut='value' style='myCustom' /> <input attribut="value"  attribut='value' > <span attribut="value"  attribut='value' >  </span>

Answer 3

Checkout:

http://blacksmoke.plutohost.net/isr/

Answer 4

A very simple regular expression to get rid of them, without going too much into it would be

preg_replace( '/style="(.*)"/', 'REPLACEMENT' )

Very simple, effective enough though