[How to] Exclude replacement inside hyperlinks, maybe using if statement,or other way

[basketmen]

Hi guys, below are simple script for word replacement, it is replacing a word in to link



[PHP]$word = array(
'google',
'yahoo'
);

$link = array(
'<a href="http://google.com">google</a>',
'<a href="http://yahoo.com">yahoo</a>'
);


$this->post['message'] = str_ireplace($word, $link, $this->post['message']);[/PHP]

for example text

i love google result

the output printed will be like this
[HTML]i love <a href="http://google.com">google</a> result[/HTML]

it is just replacing google text into a link like this <a href="http://google.com">google</a>

but the problem is if the original google text is already inside a link, like this
[HTML]<a href="http://google.com">i love google result</a>[/HTML]

the output printed will be broken like this, there will be double hyperlink
[HTML]<a href="http://google.com">i love <a href="http://google.com">google</a> result</a>[/HTML]

please help guys, how to exclude the text google inside hyperlinks above from replaced, but the text google outside hyperlinks are still replaced

maybe using if statement in the simple script above, or other way

[Mahabub]

check the below code

$word = array(
'google',
'yahoo'
);

$link = array(
'<a href="http://google.com">google</a>',
'<a href="http://yahoo.com">yahoo</a>'
);

$message = 'i love google';

$message = str_ireplace($word, $link,$message);

echo $message;

[basketmen]

thanks for answering, but i am afraid its not working, nothing changed, any other code or other way please?

[rocknbil]

Just strip out all the links with the keywords, you'd likely want to do that anyway. This might be fragile but it will work.

<?php 
$string = ' 
<p>but the problem is if the original google text is already inside a link, like this 
<a href="http://google.com">i love google result</a></p> 
<p>I love yahoo</p> 
<p>No Google is better</p> 
<p>Bingo, boingo, bongo.</p> 
<p>Doesn\'t anyone remember Lycos?</p> 
'; 
echo "<p>Before</p> $string"; 
$links = Array( 
'Google' => 'http://google.com', 
'Yahoo' => 'http://yahoo.com', 
'Bing' => 'http://www.bing.com', 
'Lycos' => 'http://www.lycos.com' 
); 
foreach ($links as $key => $value) { 
 $strip = "<a[^>]+>.*" . $key . "[^<]*<\/a>"; 
 $string = preg_replace("/$strip/ism",$key,$string); 
 $string = preg_replace("/$key/im","<a href=\"$value\">$key</a>",$string); 
} 
echo "<p>After</p> $string"; 
?> 

Note it is case insensitive and properly capitalizes the entities.