How can regular expressions be used in PHP to address the issue of removing repeated occurrences of a character in a string?

Repeated occurrences of a character in a string can be removed using regular expressions in PHP. By using the preg_replace function with the appropriate regex pattern, we can easily replace multiple occurrences of a character with just one instance. 

// Input string with repeated occurrences of a character
$inputString = "Helloooo Worlddd";

// Remove repeated occurrences of the letter 'o'
$outputString = preg_replace('/(.)\1+/', '$1', $inputString);

echo $outputString; // Output: "Hello World"

Keywords

Regular expressions PHP preg_replace character repetition string manipulation

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