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

        $value = substr($this->pdo->quote($value), 1, -1);

        return $value;
    }
public function esc(?string $value): string
    {
        if ($value === null) {
            return 'NULL';
        }

        $value = substr($this->pdo->quote($value), 1, -1);

        return $value;
    }
public function esc ( ? string $ value ) : string { if ( $ value === null ) { return 'NULL' ; } $ value = substr ( $ this -> pdo -> quote ( $ value ) , 1 , - 1 ) ; return $ value ; }
Escape value.

@param string|null $value

@return string
Escape value .