In the context of PHP development, what are some best practices for efficiently extracting and manipulating substrings from a larger string, especially when dealing with repetitive patterns?

When dealing with repetitive patterns in a larger string in PHP, a best practice is to use regular expressions to efficiently extract and manipulate substrings. Regular expressions allow you to define a pattern to match specific substrings within a larger string, making it easier to extract the desired data. By using functions like preg_match_all() or preg_replace(), you can efficiently work with repetitive patterns in a string.

// Example code snippet using regular expressions to extract substrings from a larger string
$largeString = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas.";

// Extract all words starting with a vowel
preg_match_all('/\b[aeiou]\w+\b/', $largeString, $matches);

// Output the extracted words
print_r($matches[0]);