How to search text in string using php ?

Suppose I have string below,

$text = "Hello World!";

By using below code to get string position. By using string position we can check/search in a given string.

if (strpos($text, 'World') !== false) {
    echo 'true';
}

Basically the expected ouput is "true".

Note that the use of !== false is deliberate. The strpos() function finds the position of the first occurrence of a string inside another string.