Ho provato questo:

<title>Ciao</title>
<?php
//phpinfo();

$cpdf = cpdf_open(0);
cpdf_page_init($cpdf, 1, 0, 595, 842, 1.0);
cpdf_add_outline($cpdf, 0, 0, 0, 1, "Page 1");
cpdf_begin_text($cpdf);
cpdf_set_font($cpdf, "Times-Roman", 30, "WinAnsiEncoding");
cpdf_set_text_rendering($cpdf, 1);
cpdf_text($cpdf, "Times Roman outlined", 50, 750);
cpdf_end_text($cpdf);
cpdf_moveto($cpdf, 50, 740);
cpdf_lineto($cpdf, 330, 740);
cpdf_stroke($cpdf);
cpdf_finalize($cpdf);
Header("Content-type: application/pdf");
cpdf_output_buffer($cpdf);
cpdf_close($cpdf);


?>

ma ottengo un errore

Fatal error: Call to undefined function: cpdf_open() in /var/www/vhost/prova/pdf.php on line 5

Con phpinfo ho questo:

Extensions listed here are (or will be soon) available as external modules. To install one or all of these, use "urpmi" php-EXTENSION_NAME

mysql pgsql sqlite gd imap ldap bcmath bz2 calendar cpdf crack curl cyrus db dba dba_bundle dbase dbx dio domxml exif fbsql fdf filepro fribidi gmp hwapi hyperwave iconv imagick informix ingres_ii interbase ircg java mbstring mcal mcrypt mcve mhash mime_magic ming mnogosearch msession msql mssql ncurses notes oci8 odbc oracle overload ovrimos pam_auth pcntl pdf pfpro pspell qtdom readline recode rrdtool shmop snmp smbauth sockets swf sybase sybase_ct sysvmsg tokenizer wddx xml xmlrpc xslt yaz zip adodb mmcache apd cybercash cybermut mono mqseries netools python spplus spread inifile

Mi manca il componente? Grazie