Keep values in a flat array if they contain a value from another flat array as a substring

There are two arrays.

$array1 = ["apple", "banana", "grape", "watermelon", "taro", "coffee", "green tea", "tomato", "cabbage"];
$array2 = ["there is apple", "there is banana", "there is lemon", "there is melon", "there is cucumber"];

result I want is

$array2 = ["there is apple", "there is banana"]; 

Logic is check array2 contains any value from array1.

I can do it with a string and one array

$string = "apple";
$array = ["there is apple", "there is banana", "there is lemon", "there is melon", "there is cucumber"];

with two arrays quite hard.

Do I need to loop twice?

You only need to loop once:

$array = ["apple", "banana", "grape", "watermelon"];
$array2 = ["there is apple", "there is banana", "there is lemon", "there is melon", "there is cucumber"];

foreach($array as $k=>$v){
   if(isset($array2[$k]) && strstr($array2[$k], $v)){
       $result[] = $array2[$k];
   }
}

print_r($result); // Array ( [0] => there is apple [1] => there is banana )

See Demo

Also take a look at strstr()