Allowed expressions (tags):

• posts: Number of user posts.
• likes: User reaction count.
• reactions: User reaction count (same as likes).
• trophies: Number of user trophies.
• days: Number of days since user registration.
• isMemberOf(id): User group, for multiple groups you can use comma-separated values.
• username: User's username.
• user_id: User's identifier.
• user_state: User's state.
• is_staff: Flag indicating whether the user is a staff member.
• is_admin: Flag indicating whether the user is an administrator.
• is_moderator: Flag indicating whether the user is a moderator.

Allowed operators:

• Arithmetic operators:
  Arithmetic operators are used for performing mathematical calculations:
  • +
  • -
  • *
  • /
  • % (modulus)
  • ** (exponentiation)
• Comparison operators:
  Comparison operators are used for comparing values and returning a boolean result:
  • == (equal to)
  • === (strictly equal to)
  • != (not equal to)
  • !== (strictly not equal to)
  • < (less than)
  • > (greater than)
  • <= (less than or equal to)
  • >= (greater than or equal to)
• Logical operators:
  Logical operators are used for performing logical operations and returning a boolean result:
  • and or && (logical AND)
  • or or || (logical OR)
  • not or ! (logical NOT)
• Bitwise operators:
  Bitwise operators are performed on binary representations of numbers:
  • & (bitwise AND)
  • | (bitwise OR)
  • ^ (bitwise XOR)
• String operators:
  The ~ operator is used for string concatenation:
  • ~ (string concatenation)
• Array operators:
  Array operators are used for checking element membership in an array:
  • in (element present in array)
  • not in (element not present in array)
• Numeric operators:
  The .. operator is used to create a range of numbers:
  • .. (number range)
• Ternary operator:
  The ?: operator is used to perform conditional operations in a single line:
  • ?: (ternary operator)