RSS trobule

[EPJS]

I'm trying to put my Amazon wish list on my site, so people can buy me stuff easier :p
(those amazon wish list urls are hard to remember)

I'm trying to get it to validate as HTML 4.01 Transitional

Some of the <img> tags don't have ALT in the RSS file, so alright I fixed that with this

$desc	= str_replace('<img','<img alt=""',$desc);

HOWEVER, some of the <img> do have ALT. In which case, then a "duplicate specification" is given when validating.

So, I have to somehow detect which <img> tags don't have ALT and add it, without adding it to the ones that already have ALT.

Have help on doing this? I wouldn't even know where to begin. 😕

[wilku]

Regular expression to the rescue 😉

<?php
$text = 'this is some <img src="/img.jpg"> without alt and <img alt="alternate text" src="/img.jpg">';
$result = preg_replace('/(<img)(.*(?!alt).*>)/','\1 alt=""\2',$text);
echo "source:".htmlentities($text)."<br>";
echo "result:".htmlentities($result);
?>

The key part is (?!alt) which means 'not followed by alt'.

[EPJS]

wilku wrote:

Regular expression to the rescue 😉

<?php
$text = 'this is some <img src="/img.jpg"> without alt and <img alt="alternate text" src="/img.jpg">';
$result = preg_replace('/(<img)(.*(?!alt).*>)/','\1 alt=""\2',$text);
echo "source:".htmlentities($text)."<br>";
echo "result:".htmlentities($result);
?>

The key part is (?!alt) which means 'not followed by alt'.

That causes things like

<img alt="" border="0" width="132" height="22" src="http://g-images.amazon.com/images/G/01/gifts/registries/wishlist/v2/btn-buying-opt-cpct.gif" hspace="3" vspace="5" alt="Add to Cart" >

to appear.

It's adding the alt="" but it's not noticing the other alt in there.

[NogDog]

$regexp = '#(<img(\s+(?!alt)\S*=([\'"])[^\\3]*\\3)+)(\s*/?>)#isU';
$result = preg_replace($regexp, '\\1 alt=""\\4', $string);