[RESOLVED] add space between camelCase words

viveleroi0

How can I easily add a space between each lowercase and uppercase letter of a string? The trick is that it can only be between lowercase /uppercase, not when you have an uppercase/lowercase.

For example:

camelCase

should become:

camel Case

not:

camel C ase

I've got a solution using preg_match_all and then looping, but there has to be an easier way. Ideas?

bpat1434

Hmm... what have you tried? This works for me:

<?php

$strings = array(
	'camelCase',
	'camelcase',
	'sOme worDswhichDon\'tGoTogether'
);

$pattern = '/(.*?[a-z]{1})([A-Z]{1}.*?)/';
$replace = '${1} ${2}';

foreach($strings AS $string)
{
	echo '<strong>Original:</strong> ', $string,
		'<br /><strong>Replaced:</strong>', 
		preg_replace($pattern, $replace, $string),
		'<br />';
}

?>

Gives this output:

Original: camelCase
Replaced:camel Case
Original: camelcase
Replaced:camelcase
Original: sOme worDswhichDon'tGoTogether
Replaced:s Ome wor Dswhich Don't Go Together

That's what you want isn't it?

Drakla

It's beautiful.

bradgrafelman

Don't forget to mark this thread resolved (if it is).

bpat1434

Considering the original poster hasn't replied, we aren't sure yet :p

bradgrafelman

WOOPS. Hehe. Read Drakla's reply and didn't bother to double check the usernames... :o

Weedpacket

Well, you don't need the loop, since preg_replace() can take a whole array of strings and process all of them.
An alternative pattern might be

/(?<=[^A-Z])([A-Z])/
=replace with=> " $1"

viveleroi0

I didn't need a loop, I just needed the regex patterns on how to replace it properly. This works thanks!