Comments on Charl van Niekerk » Blog: PHP CamelCase Explode 2.0

Well spotted Stephen!

2008-07-12T00:46:00.000Z

Well spotted Stephen!

Thanks for the code, this was just what I was look...

2008-07-11T13:05:00.000Z

Thanks for the code, this was just what I was looking for..

One thing I noticed...

if ($lowercase) array_map('strtolower', $array);

neeeds to be:

if ($lowercase) $array = array_map('strtolower', $array);

Cool thanks Andreas!!

2008-06-16T10:18:00.000Z

Cool thanks Andreas!!

The "advanced" thing, with the following features:...

2008-06-16T04:14:00.000Z

The "advanced" thing, with the following features:
- give "ABCd" or "AB Cd" or "J E T Word" as an $example_string parameter, to tell the function how it should split acronyms and MIXedWords.. (performance issues are avoided via caching in static variables)
- additional $glue parameter to implode the array afterwards.

See http://www.bevolunteer.org/trac/wiki/CamelCaseExplode

Example use:

echo '
'.camelCaseExplode('MyXMLParsingEngine', true, 'ABCd', ' ');
echo '
'.camelCaseExplode('MyXMLParsingEngine', true, 'AB Cd', ' ');
echo '
'.camelCaseExplode('MyXMLParsingEngine', true, 'A B Cd', ' ');

gives

My XMLParsing Engine
My XML Parsing Engine
My X M L Parsing Engine

---------------

And here's the code...
(sorry, blogger doesn't like the < pre > tag in comments)

function camelCaseExplode($string, $lowercase = true, $example_string = 'AA Bc', $glue = false)
{
static $regexp_available = array(
'/([A-Z][^A-Z]*)/',
'/([A-Z][^A-Z]+)/',
'/([A-Z]+[^A-Z]*)/',
);
static $regexp_by_example = array();
if (!isset($regexp_by_example[$example_string])) {
$example_array = explode(' ', $example_string);
foreach ($regexp_available as $regexp) {
if (implode(' ', preg_split(
$regexp,
str_replace(' ', '', $example_string),
-1,
PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE
)) == $example_string) {
break;
}
}
$regexp_by_example[$example_string] = $regexp;
}
$array = preg_split(
$regexp_by_example[$example_string],
$string,
-1,
PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE
);
if ($lowercase) array_map('strtolower', $array);
return is_string($glue) ? implode($glue, $array) : $array;
}

Oh yes, just why I didn't design it like that, if ...

2007-11-12T15:25:00.000Z

Oh yes, just why I didn't design it like that, if you join two adjacent segments that are both all-caps one will not know where they should be separated.

Hey man, good one, thanks for pointing that out! M...

2007-11-12T15:21:00.000Z

Hey man, good one, thanks for pointing that out! My intention was actually that acronyms such as AOL should be split up into 3 elements (that's the way I tested). However, I'm sure lots of people would like to use your solution instead.

I think the regex should be /([A-Z][^A-Z]+)/, not ...

2007-11-11T22:53:00.000Z

I think the regex should be /([A-Z][^A-Z]+)/, not /([A-Z][^A-Z]*)/ . Otherwise it splits acronyms like "AOL".