Las extensiones (librerías) disponibles en PHP 5.3 en servidores con selector de versiones son:
| apc | gmagick | mcrypt | phalcon | sysvsem | |||||
| apcu | gnupg | memcache | phar | sysvshm | |||||
| apm | haru | memcached | posix | tidy | |||||
| bcmath | hidef | mongo | propro | timezonedb | |||||
| bcompiler | htscanner | msgpack | pspell | trader | |||||
| big_int | http | mssql | quickhash | translit | |||||
| bitset | huffman | mysql | radius | uploadprogress | |||||
| bloomy | idn | mysqli | raphf | uri_template | |||||
| bz2_filter | igbinary | mysqlnd | rar | uuid | |||||
| coin_acceptor | imagick | ncurses | recode | wddx | |||||
| crack | imap | nd_mysql | redis | weakref | |||||
| dba | inclued | nd_mysqli | rsync | xcache | |||||
| dbase | inotify | nd_pdo_mysql | snmp | xcache_3 | |||||
| dbx | interbase | oauth | soap | xdebug | |||||
| dom | intl | odbc | sockets | xmlreader | |||||
| doublemetaphone | ioncube_loader | opcache | sourceguardian | xmlrpc | |||||
| eaccelerator | ioncube_loader_4 | spl_types | xmlwriter | ||||||
| eio | jsmin | pdo | sqlite | xrange | |||||
| enchant | json | pdo_dblib | ssh2 | xsl | |||||
| fileinfo | ldap | pdo_firebird | stats | yaf | |||||
| functional | libevent | pdo_mysql | stem | yaz | |||||
| gd | lzf | pdo_odbc | stomp | zend_guard_loader | |||||
| gender | magickwand | pdo_pgsql | suhosin | zip | |||||
| geoip | mailparse | pdo_sqlite | sybase_ct | ||||||
| mbstring | pgsql | sysvmsg |
