getprotobynumber() - php 网络函数

梵高12个月前 (11-21)阅读数 20#技术干货

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getprotobynumber()

(PHP 4, PHP 5, PHP 7)

Get protocol name associated with protocol number

说明

getprotobynumber(int $number): string

getprotobynumber()returns the protocol name associated with protocol$numberas per/etc/protocols.

参数

$number

getprotobynumber() - php 网络函数

The protocol number.

返回值

Returns the protocol name as a string,或者在失败时返回FALSE.

参见

getprotobyname()Get protocol number associated with protocol name

Note that by the time of writing this note (5.3.3), there seems to be only two defined constants for the protocol numbers: SOL_UDP and SOL_TCP. 
For all other protocols (like ICMP,... ) you'll have to provide the exact number (EG: 1 for ICMP, ... )

On a UNIX system (don't know if this is true for Windows), the php functions getprotobyname and getprotobynumber are just wrapper for their corresponding system calls. These functions returns the protocol name or protocol number based on the definition from IANA. If you are looking for a protocol and you don't know its number, you can find the exact protocol number here: http://www.iana.org/assignments/protocol-numbers

getprotobynumber()
=====================
getprotobynumber() gets the protocol name for the given protocol number on the local system.
 If the protocol number is not recognized,the function returns FALSE.
The given code snippet gives the list of protocols along with their protocol numbers
=====================
code

=====================
OUTPUT:
0  ip 
1  icmp 
2  igmp 
3  ggp 
4  ipencap 
5  st 
6  tcp 
8  egp 
9  igp 
12  pup 
17  udp 
20  hmp 
22  xns-idp 
27  rdp 
29  iso-tp4 
33  dccp 
36  xtp 
37  ddp 
38  idpr-cmtp 
41  ipv6 
43  ipv6-route 
44  ipv6-frag 
45  idrp 
46  rsvp 
47  gre 
50  esp 
51  ah 
57  skip 
58  ipv6-icmp 
59  ipv6-nonxt 
60  ipv6-opts 
73  rspf 
81  vmtp 
88  eigrp 
89  ospf 
93  ax.25 
94  ipip 
97  etherip 
98  encap 
103  pim 
108  ipcomp 
112  vrrp 
115  l2tp 
124  isis 
132  sctp 
133  fc 
135  mobility-header 
136  udplite 
137  mpls-in-ip 
138  manet 
139  hip 
140  shim6 
141  wesp 
142  rohc

getprotobynumber()
=====================
getprotobynumber() gets the protocol name for the given protocol number on the local system. If the protocol number is not recognized,the function returns FALSE.The given code snippet gives the list of protocols along with their protocol numbers

OUTPUT:
0--> ip 
1--> icmp 
3--> ggp 
6--> tcp 
8--> egp 
12--> pup 
17--> udp 
20--> hmp 
22--> xns-idp 
27--> rdp 
66--> rvd

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