src/Collection/ArrayAccess.php
public function offsetExists( $offset )
	{
		// Can not retrieve a key based on a value other than a string, integer or boolean
		if( !is_string( $offset ) && !is_int( $offset ) && !is_bool( $offset ) ) {
			return false;
		}

		return array_key_exists( $offset, $this->data );
	}
public function offsetExists( $offset )
	{
		// Can not retrieve a key based on a value other than a string, integer or boolean
		if( !is_string( $offset ) && !is_int( $offset ) && !is_bool( $offset ) ) {
			return false;
		}

		return array_key_exists( $offset, $this->data );
	}
Check if the given offset exists in the set of data.

@param mixed $offset The offset to check.

@return bool