Dangerous PHP functions!!

disk_free_space,disk_total_space,diskfreespace,exec,function_exists,
fsockopen,getcwd,getenv,get_current_user,getmyuid,
getmygid,ini_get,is_writable,is_callable,php_uname,
passthru,popen,shell_exec,system,dl,
escapeshellarg,escapeshellcmd,proc_close,proc_get_status,proc_nice,
proc_open,proc_terminate,checkdnsrr,closelog,define_syslog_variables,
dns_check_record,dns_get_mx,dns_get_record,getcwd,gethostbyaddr,
gethostbyname,gethostbynamel,gethostname,getmxrr,getprotobyname,
getprotobynumber,getservbyname,getservbyport,header_remove,header,
headers_list,headers_sent,inet_ntop,inet_pton,ip2long,
long2ip,fclose,feof,fgets,fgetss,
file,fopen,fsockopen,fwrite,mail,
pfsockopen,openlog,setcookie,setrawcookie,socket_recvfrom,
socket_recv,stream_socket_recvfrom,msg_receive,socket_get_status,socket_set_blocking,
socket_set_timeout,syslog,basename,chgrp,chmod,
chown,clearstatcache,copy,dirname,disk_free_space,
disk_total_space,diskfreespace,fclose,feof,fflush,
fgetc,fgetcsv,fgets,fgetss,file_exists,
file_get_contents,file_put_contents,file,fileatime,filectime,
filegroup,fileinode,filemtime,fileowner,fileperms,
filesize,filetype,flock,fnmatch,fopen,
fpassthru,fputcsv,fputs,fread,fscanf,
fseek,fstat,ftell,ftruncate,fwrite,
glob,is_dir,is_executable,is_file,is_link,
is_readable,is_uploaded_file,is_writeable,lchgrp,lchown,
link,linkinfo,lstat,mkdir,move_uploaded_file,
parse_ini_file,parse_ini_string,pathinfo,pclose,popen,
readfile,readlink,realpath_cache_get,realpath_cache_size,realpath,
rename,rewind,rmdir,set_file_buffer,stat,
symlink,tempnam,tmpfile,touch,umask