src/Migration/Adapter/Database/MySqlSchemaAdapter.php
public function quote(?string $value): string
    {
        if ($value === null) {
            return 'NULL';
        }

        return $this->pdo->quote($value);
    }
public function quote(?string $value): string
    {
        if ($value === null) {
            return 'NULL';
        }

        return $this->pdo->quote($value);
    }
public function quote ( ? string $ value ) : string { if ( $ value === null ) { return 'NULL' ; } return $ this -> pdo -> quote ( $ value ) ; }
Quote value.

@param string|null $value

@return string
Quote value .