Replace javascript document.write() call from a HTML document body with its HTML content

Question

Is there an AND operator for PHP's regular expressions?

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

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

I've tried to find some tutorial for regex, but I can't find anything good.

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

')));

Most frequently regular-expressions.info is recommended. The introductions are mostly understandable. Also look into this tools list stackoverflow.com/questions/89718/… for help with crafting regexpressions. — mario
– mario, Commented May 2, 2011 at 0:03
@mario I checked it before. It didnt look newcomer -friendly. I'll take a look again, Thanks :) — Muazam
– Muazam, Commented May 2, 2011 at 0:25

mario · Accepted Answer · 2011-05-02 01:04:58Z

2

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.

edited May 2, 2011 at 1:04

answered May 2, 2011 at 0:47

mario

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2 Comments

Muazam Over a year ago

The code does not replace anything or give any errors. Thanks for helping.

mario Over a year ago

@Muazam: True. Try again with the /s modifier. Works on your example.

Lightness Races in Orbit · Accepted Answer · 2011-05-02 00:03:59Z

0

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);

answered May 2, 2011 at 0:03

Lightness Races in Orbit

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3 Comments

Muazam Over a year ago

Sorry for the misunderstanding, updated first post with an example.

Lightness Races in Orbit Over a year ago

@Muazam: I still don't really get it. Maybe I'm just too tired.

Lightness Races in Orbit Over a year ago

@Muazam: Your question didn't ask me to :(

manojlds · Accepted Answer · 2011-05-02 00:11:42Z

0

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.

edited May 2, 2011 at 0:11

answered May 2, 2011 at 0:06

manojlds

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1 Comment

Muazam Over a year ago

I want to match them both, but not in order. Thanks

vartec · Accepted Answer · 2011-05-02 01:02:16Z

0

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

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

edited May 2, 2011 at 1:02

answered May 2, 2011 at 0:43

vartec

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1 Comment

Muazam Over a year ago

syntax error, unexpected ']', That looks like some advance RegEX. Thanks for helping :)

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