如果字符串中某处包含分隔的单词，则返回结果- PHP

$string = "Hello, World! This is a sample string.";
$delimiter = ", ";

$words = explode($delimiter, $string);

print_r($words);

Array
(
    [0] => Hello
    [1] => World! This is a sample string.
)

$string = "Hello, World! This is a sample string.";
$word = "World";

if (strpos($string, $word) !== false) {
    echo "字符串中包含单词 '{$word}'";
} else {
    echo "字符串中不包含单词 '{$word}'";
}

字符串中包含单词 'World'