Regular expression, remove onclick solution-php Tutorial

Trim & quot; border & quot; 0 & quot; onclick & quot; if (this. pa regular, remove onclick
$ Str = 'screen. width-461) window. open (\ 'http: // response); "> ';

I want to remove the onclick in the above string. the regular expression I write is as follows:
Function clear_onclick ($ document ){
If (! $ Document) return $ document;
$ Search = array (
"/Onclick = ('| \" | )? (. *) ('| \ "|)/IsmUe ",


);
$ Replace = array ("",
);

$ Text = preg_replace ($ search, $ replace, $ document );
Return $ text;
}

Echo clear_onclick ($ str );
It seems that my results cannot be achieved. how can I remove regular expressions?

------ Solution --------------------
"/Onclick = ('| \")? (. *) \ 1/sU"

That's all.