How to Split CamelCase Words into Words with PHP\'s preg_match?

Splitting CamelCase Words into Words with PHP's preg_match

In order to split camelCase words into an array of individual words using PHP's preg_match, you can employ the following steps:

The challenge presented was to divide the word "oneTwoThreeFour" into the following array:

['one', 'Two', 'Three', 'Four']

The provided code:

$words = preg_match("/[a-zA-Z]*(?:[a-z][a-zA-Z]*[A-Z]|[A-Z][a-zA-Z]*[a-z])[a-zA-Z]*\b/", $string, $matches)`;

failed to accomplish the desired outcome because it matched the entire word rather than splitting it into individual words.

Solution:

To achieve the desired result, you can utilize preg_split as follows:

$arr = preg_split('/(?=[A-Z])/',$str);

This regex effectively splits the input string just before the uppercase letter. The regex pattern (?=[A-Z]) matches the point immediately preceding an uppercase letter.

Demonstration:

<code class="php">$str = 'oneTwoThreeFour';
$arr = preg_split('/(?=[A-Z])/',$str);

print_r($arr); // Outputs: ['one', 'Two', 'Three', 'Four']</code>

By implementing preg_split with the provided regex pattern, you can accurately divide camelCase words into their individual word components.

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