How can PHP developers ensure that their code is efficient and effective when extracting specific information, like numbers, from strings?

When extracting specific information, like numbers, from strings in PHP, developers can use regular expressions to efficiently and effectively achieve this task. Regular expressions allow for pattern matching within strings, making it easy to extract desired information such as numbers. By using functions like preg_match or preg_match_all, developers can easily extract numbers from strings while ensuring their code is efficient and accurate.

$string = "I have 10 apples and 5 oranges";
preg_match_all('!\d+!', $string, $numbers);
print_r($numbers[0]);