preg_replace PHP 和

Question

Is there a AND operator for PHP - regular expression.

I'm trying to replace everything from document to ' AND ) .

$output = preg_replace('/document.*\'/', '', $output);

Any idea how this can be done?

I've tried to find some tutorial for RegEX but I can't find any good. If you have any good sites or book please give me a link. I googled a lot.

Thanks.

EDIT: Misunderstanding.

This is the code before replaced.

<p>document.write(unescape('
<embed src="XXXXXX" type="application/x-shockwave-flash" wmode="window" width="712" height="475"%.35" allowFullScreen="true" ></embed>
')));</p>

I want to make it look like this:

<p>
<embed src="XXXXXX" type="application/x-shockwave-flash" wmode="window" width="712" height="475"%.35" allowFullScreen="true" ></embed>
</p>

Replaced:

document.write(unescape('

and

')));

Answer 1

What you actually want is to replace two parts, and leave something in between over. To not make it match undesired parts, use explicit character classes:

= preg_replace("/document[\w.(]+['](.*?)['][);]+/s", '$1', $output); 

So it matches anything enclosed in (' and ') with varying amounts of the latter.

Answer 2

Do you mean OR ?

You want to strip ranges ["document", "'"] and ranges ["document", ")"] , right? Which is like the range ["document", "'" OR ")"] .

In regular expressions, | means "or".

$output = preg_replace('/document.*(\'|\))/', '', $output);

Answer 3

In regular expression, AB is A and B A|B is A OR B

So if you want to match ') then just put that in the regular expression.

On the other hand if you want to match either ' or ) as the end of your string use '|) or [')]

Use something like http://gskinner.com/RegExr/ to try out your regexes. It also has descriptions on the right.

Answer 4

• Use parenthesis to create matching group
• Use $1 to refer to it

$output = preg_replace("/document[^']*'([^']*)[^;]*;/", '$1', $output);