Question

Change links from relative to absolute

Asked by: bitter_chicken

Hi doodz/doodettes:

Here's what I want to do within a php script:

Say I have loaded a plain HTML file into a string, and I know what folder the file lies in, how can I change all the links & references to resources (such as images) from relative to absolute? (i.e. http://something)

eg
Say a HTML page lies in a folder: 'folder1' within the public_html directory.
References to images might be src="images/image1.jpg" and a link might be href="../index.htm"

I would like the script to change the first reference to
src="http://www.website.com/folder1/images/image1.jpg"
And the second:
href="http://www.website.com/index.htm"

How would I go about this? I appreciate any ideas or advice

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Asked On
2004-07-15 at 00:39:03ID21059525
Tags

relative

,

change

,

php

,

absolute

,

links

Topic

PHP Scripting Language

Participating Experts
2
Points
500
Comments
4

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Answers

 

by: SquinkyPosted on 2004-07-15 at 03:30:02ID: 11557469

The 'make_abs' function on this page should do what you need:

http://www.webmasterworld.com/forum88/334.htm

this may also help, there are similar examples in the user notes:

http://www.php.net/realpath

 

by: Th3_GODPosted on 2004-07-16 at 17:58:53ID: 11573100

You can also just use the URL to the file + the relative reference. You can even use the realtive reference relative to ur current page. Some don't know this but almost always you can use relative URL operations in Absolute paths for example. http://www.somesite.com/deepdir/somedirectoryyouarein/../../Targetdirectory/Iwannabehere/

This will actually link to the absulte link http://www.soemsite.com/Targetdirectory/Iwannabehere
the ../ moves up a direcotry.

Another Method use the HTML Base tag. Just add an echo anywhere within the HMTL String (it may work before or after the <html> tags but is meant to be stuck in the head/)
The base tag will do everything you want and is wat u need i beleive, Im not sure but i think the above is for makeing Things relative to the php not to the HTML. For Html use the <Base href="newrelativeposition here"> tag
 http://www.htmldog.com/reference/htmltags/base/

 

by: Th3_GODPosted on 2004-07-16 at 18:05:20ID: 11573116

By the way i ssume you are using relative references for efficnecy etc. You can use the Server path variables to get rthe current Domain directory etc. this will enable you to basically use a absolute path that will change as a relative one does, when the path changes or the server changes. The link for this is http://www.scriptygoddess.com/archives/2003/01/20/getting-the-current-url-with-php/

 

by: bitter_chickenPosted on 2004-08-15 at 03:46:34ID: 11803571

thanks for the help

20120131-EE-VQP-002

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