[SOLVED] Switching to regex?

[Azu]

Hello I'm used to using str_replace but now I want to switch to a regex solution since str_replace isn't working how I want it to work.

 

Can somebody please tell me how to use a regex function to act like str_replace, except without changing the capilization of letters?

 

For example, stri_replace('a test','<b>A test</b>','This is a test'); outputs '<b>A test</b>' (it changed the lowercase a to an upper case A).

 

How do I do it with a regex function so that it won't change the case?

 

This is for a search script that I am making, and have it change instances of the search phrase in the result to bold. It isn't supposed to change the case though. Please help.. I've never used regex before except copy and pasting regex that I found by searching, but I can't find this by searching.. x_x

[hackerkts]

<?php
$text = "hello, how are you?";
$search = $_GET['search'];
$text = str_replace($search, '<b>'.$search.'</b>', $text);
echo $text;
?>

 

If your mixed replace don't put capital then it wouldn't change to capital letter.

[Azu]

Thanks, this is how I am doing it right now.

 

The problem is that it changes the case in the results to the case in the search.

[xyn]

for php 5 it's

 

str_ireplace("term", "replace", $string);

[Azu]

Thanks, this is how I am doing it right now.

 

The problem is that it changes the case in the results to the case in the search.

[xyn]

So you basically want your SQL syntax lowercase?

to match the keywords :S i'm confused. sorry.

[effigy]

<?php
$tests = array(
	'i am a string',
	'I AM A STRING'
);
foreach ($tests as $test) {
	echo $test, ' => ', preg_replace('/\b(am)\b/i', '<b>\1</b>', $test), '<br>';
}
?>

[Azu]

Thank you effigy! That's exactly what I was looking for