str_replace

[rockinaway]

FOr my search I am highlighting matches.. and I have one problem.

 

I am using:

 

str_replace($_GET['keywords'], 'MY HIGHLIGHT CODE', $search results)

 

However with this is the search term was 'test', then it only highlights 'test', and not similar words like 'Test' etc

 

Is there anyway this can be solved?

[Jessica]

http://us3.php.net/str_replace

See also str_ireplace(), substr_replace(), preg_replace(), and strtr().

 

Try that first one. i in a function like that normally indicated case-Insensitive

[rockinaway]

Thanks!

 

I guess I need the str_ireplace

 

Thanks again!

[rockinaway]

I am getting undefined function with using str_ireplace

[wildteen88]

str_ireplace is only available for PHP5. You're probably better of using ergei_replace instead.

[rockinaway]

Doesn't recognise it still :S

[wildteen88]

What doesn't it recognise? ergei_replace or str_ireplace?

[rockinaway]

Both :'(

[wildteen88]

Ooh hang on, I had a slight typo it should be eregi_replace not ergei_replace

 

Before using this function read the document on it here

[rockinaway]

I don't get the pattern thing and how to work it out if I am using $_GET['keywords']

 

EDIT - Doesn't recognise that either

[wildteen88]

SO this doesn't work:

 

<?php

if(isset($_GET['keyword']))
{
    $keyword = $_GET['keyword'];

    $txt = 'Hello world how are you today?';

    $txt = eregi_replace('(' . $keyword. ')', "<b style=\"color: red;\">\\0</b>", $txt);

    echo $txt;
}

?>
<form action="" method="get">
Keyworld: <input type="text" name="keyword" value="hello"><br />
<input type="submit" value="Highlight Keyword">
</form>

 

When you use ereg you are using regular expressions. So you're best of reading up on the basics of regular expressions in or der to understand. Also you're best of readin up on how the ereg function works too, before I linked you to the eregi function which doesnt explain how ereg works.

[rockinaway]

That works now... Thanks!

 

I don't get the \\0 and couldn't find anything on it :S

[wildteen88]

its a back reference. If you read how the ereg function worked it explains it there.