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I want to split a word by capital letter in PHP

For example:

$string = "facebookPageUrl";

I want it like this:

$array = array("facebook", "Page", "Url");

How should I do it? I want the shortest and most efficient way.

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You can use preg_split with the a look-ahead assertion:

preg_split('/(?=p{Lu})/u', $str)

Here p{Lu} is a character class of all Unicode uppercase letters. If you just work with US-ASCII characters, you could also use [A-Z] instead.


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