Installing pdo_mysql error

hi how to install PDO pdo_mysql sysvshm sysvsem sysvmsg SPL sockets SimpleXML shmop mysqlnd mysqli mcrypt mbstring i am using following line yum install pdo_mysql sysvshm sysvsem sysvmsg spl sockets SimpleXML shmop mysqlnd mysqli mcrypt mbstring Aucun paquet sysvshm disponible. Aucun paquet sysvsem disponible. Aucun paquet sysvmsg disponible. Aucun paquet spl disponible. Aucun paquet sockets disponible. Aucun paquet SimpleXML disponible. Aucun paquet shmop disponible. Aucun paquet mysqlnd disponible. Aucun paquet mysqli disponible. Aucun paquet mcrypt disponible. Aucun paquet mbstring disponible. No sysvshm package available. No sysvsem package available. No sysvmsg package available. No spl package available. No packet sockets available. No SimpleXML package available. No shmop package available. No mysqlnd package available. No mysqli package available. No mcrypt package available. No mbstring package available.