What are the best practices for using preg_match_all in PHP to search for specific numbers within a string?

When using preg_match_all in PHP to search for specific numbers within a string, it is important to use the correct regular expression pattern to match the numbers. One common pattern to match numbers is "\d+" which matches one or more digits. Additionally, using the preg_match_all function will return all matches found in the string, allowing you to process each number individually. 

$string = "I have 3 apples and 5 oranges.";
preg_match_all('/\d+/', $string, $matches);
foreach ($matches[0] as $match) {
    echo $match . "\n";
}

Keywords

preg_match_all PHP regular expressions string manipulation numeric values

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