Hello Gregor,
On 13 Jan 2004 at 15:08, Gregor Jaksa wrote:
> hello, i need to replace some words in file with [tag]word[/tag] and other
> words with [sample]word[/sample].
>
> i have a list of words which i need to replace with [sample] tags declared
> like
> $words = 'word1|word2|word3|word4';
>
> replacing those words is easy i just use preg_replace('/\b( ' . $words .
> ')\b/i', '[sample]$1[/sample]', $file);
> but how to replace all other words that are not in $words array with [tag]
> tag ?
>
> thx in advance!
Let me see if I understood you correctly: you want to surround all the words in the
string
$file that are not also contained in the $words array with [tag] and [/tag]?
Here's an idea:
<?php
$file = 'this is my test string and I just want to use it for a quick test';
$words = 'test|string';
$new_file = preg_replace('/\b('.$words.')\b/', ' [sample]$1[/sample] ', $file);
$new_file = preg_replace('/\b(?<!\[sample\]|\[)(\w+)(?!\[\/sample\]|\])\b/',
' [tag]$1[/tag] ', $new_file);
print $new_file;
?>
Very important: you *must not* forget the spaces before and after the opening and
closing brackets in the replacement string.
Good luck,
Erik
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