在PHP中获取包含在字符串中的结果？

<?php
$string = "Hello, my name is John. I am 25 years old.";
$pattern = "/[0-9]+/";
preg_match($pattern, $string, $matches);

echo "The result is: " . $matches[0];
?>

<?php
$string = "There are 5 cats and 3 dogs in the house.";
$pattern = "/[0-9]+/";
preg_match_all($pattern, $string, $matches);

echo "The results are: ";
foreach ($matches[0] as $match) {
    echo $match . " ";
}
?>