Posted by amygdala on 05/28/07 06:18

Hi there,

I'm trying to replace single quoted attributes in HTML tags with double
quotes. What I've come up with is this:

function replaceSingleQuotesInsideTags( $input )
{
$output = preg_replace(
'/<[^>]*>/e',
"str_replace( '\'', '\"', '$0' )",
$input
);
return $output;
}

So let's say I have this string of HTML code:

On <A href="/home/" target="_self">this</A> page you will find <SPAN
STYLE='font-style: italic'>stuff</SPAN>

Result:
On <A href=\"/home/\" target=\"_self\">this</A> page you will find <SPAN
STYLE="font-style: italic">stuff</SPAN>

As you can see, when I run it through my function
replaceSingleQuotesInsideTags, not only does it replace the single quotes
with double quotes, but it also adds backslashes before double quotes that
were already present. This is unexpected behaviour to me.

Expected result:
On <A href="/home/" target="_self">this</A> page you will find <SPAN
STYLE="font-style: italic">stuff</SPAN>

Note the missing backslashes in the anchor tag attributes.

Does anybody have an idea of what is going on here?

Working with PHP 5.1.4, magic_quotes (all) off.

Thank you in advance.

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