How PHP determines the string position in another string

This article mainly introduces PHP to judge the string in another string position method, need friends can refer to the next

The code is as follows: $email = ' user@exe.com ';         Defines a string $result =strstr ($email, ' @ ');      Returns the substring echo $result;   The Strstr () function searches for a string that appears for the first time in another string. The function returns the remainder of the string (from a match point).   returns false if the searched string is not found. The syntax code is as follows: Strstr (String,search) Outputs the result "@exe. com"