pregnant strings

zingbats

Ok! As you may have guessed from my comical punny subject; I need to use preg_match and preg_replace. 🙂

I have used file() to get the HTML of a particular site. I need to replace *.jpg with the filename this.jpg.

So if the html contained:
<img border="0" src="image.jpg" width="285" height="299">

It would be replaced with:

Danke schon.

laserlight

If you judge that the probability of the string
src="image.jpg"
being found outside the image tag is negligible, then you could simply do a str_replace for that, and save on regex.

zingbats

Yeah OK but i want to keep the other image attributes.

So, even if I find the correct line with it on, I firstly have no idea how many spaces into the line it is.

Think of it, I am using file() to split the HTML into lines. Then doing a foreach to check each row.

Here is an example row:

  <td width="210" valign="top" background="blah.gif">

Firstly, I would need to search for /.gif rather than <img

Secondly, the script only finds the ".gif" bit not the "blah" bit thus giving me no way of saying replace blah.gif

laserlight

Oh yeah, you wouldnt be able to avoid regex.

Keeping to my idea:
$line[$i] = preg_replace('/src\=\"([-\w]+).gif\"/i','src="$1"', $line[$i]);

though you might want to use something more sophisticated, that checks for the image tag properly.
I dont have access to PHP to test at the moment, and my regex isnt all that great, so I'll leave it as that.

zingbats

ooook.. That looks mighty complex!

The PHP doc. offers NO insight into what all the \w and ()s all mean. You know anywhere where I can read up on it?

mrhappiness

The PHP Doc. 🙂

zingbats

Ok. The code doesnt actually work.

You can try my code and see what I mean. All you do is define $addy as a HTML page (http://www.google.com).

There is no error, just it doesnt replace the file.

<? 
$echoey = file($addy); 
foreach($echoey as $line){ 
if(preg_match("/src/", $line)){ 
$line = preg_replace('/src\=\"([\-\w]+)\.gif\"/i','src="BLAHBLAH"', $line); 
} else { 
} 
} 
//echo file_get_contents($addy); 
$echoer = ""; 
foreach($echoey as $adder){ 
$echoer .= $adder; 
$echoer .= "\r\n"; 
} 
echo $echoer; 
?>