Bold array elements and Replace

SMALLARTICLES

$str = array("word1", "word2", "word3");
$str_bold = array("<b>word1</b>", "<b>word2</b>", "<b>word3</b>");

How can I add bolding tags arround (single) words in an array?
($str array can have 4, 5, 6 or more signle words in other occasions)

If you can tell me I can do this:

$sentence = "This sentence has word1 and word3 in it.";
$sentence_bold = str_replace($str,$str_bold,$sentence);
echo $sentence_bold;

output:

This sentence has word1 and word3 in it.

wilku

You can do this. To automate the process of adding bolding tags:


$str = array("word1", "word2", "word3");
$str_bold = array();

foreach ($str as $word)
         $str_bold[] = '<b>'.$word.'</b>';

SMALLARTICLES

Oh. I see. I'll try to memorize and duplicate. Thanks Wilku. 🙂

NogDog

This will be case-insensitive, and will only match whole words:

<?php
$words = array('word1', 'word2', 'word3');
$regexes = array_map(create_function(
      '$a', 'return("/\\b".preg_quote($a)."\\b/i");'), $words);
$sentence = "This sentence has word1 and Word3 in it, thisword2 will be ignored.";
$sentence_bold = preg_replace($regexes, "<b>$0</b>", $sentence);
echo $sentence_bold;

SMALLARTICLES

I noticed words like 'thisword2' did get partially bolded, but I don't mind that much. As long as I get blolded words. Btw I'm using this on a search results page. I have however tried your code, NogDog, and it seems to work as told.

tks - good work guys. 🙂

NogDog

If you want partial words to be bolded, remove the "\b" (word boundary) at each end of the regular expression.