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PHP5中文手册
Network Functions
安装
本扩展模块作为 PHP 内核的一部分，无需安装即可使用。
运行时配置
这些函数的行为受 php.ini 的影响。
Network Configuration Options
| Name |
Default |
Changeable |
Changelog |
| define_syslog_variables |
"0" |
PHP_INI_ALL |
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有关 PHP_INI_* 常量进一步的细节与定义参见 php.ini 配置选项。
以下是配置选项的简要解释。
-
define_syslog_variables
boolean
-
Whether or not to define the various syslog variables (e.g. $LOG_PID,
$LOG_CRON, etc.). Turning it off is a good idea performance-wise. At
runtime, you can define these variables by calling
define_syslog_variables().
预定义常量
以下常量作为 PHP 核心的一部分一直有效。
openlog() Options
| Constant |
Description |
| LOG_CONS |
if there is an error while sending data to the system logger,
write directly to the system console
|
| LOG_NDELAY |
open the connection to the logger immediately
|
| LOG_ODELAY |
(default) delay opening the connection until the first
message is logged
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| LOG_NOWAIT |
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| LOG_PERROR |
print log message also to standard error |
| LOG_PID |
include PID with each message |
openlog() Facilities
| Constant |
Description |
| LOG_AUTH |
security/authorization messages (use LOG_AUTHPRIV instead
in systems where that constant is defined)
|
| LOG_AUTHPRIV |
security/authorization messages (private) |
| LOG_CRON |
clock daemon (cron and at) |
| LOG_DAEMON |
other system daemons |
| LOG_KERN |
kernel messages |
| LOG_LOCAL0 ... LOG_LOCAL7 |
reserved for local use, these are not available in Windows |
| LOG_LPR |
line printer subsystem |
| LOG_MAIL |
mail subsystem |
| LOG_NEWS |
USENET news subsystem |
| LOG_SYSLOG |
messages generated internally by syslogd |
| LOG_USER |
generic user-level messages |
| LOG_UUCP |
UUCP subsystem |
syslog() Priorities (in descending order)
| Constant |
Description |
| LOG_EMERG |
system is unusable |
| LOG_ALERT |
action must be taken immediately |
| LOG_CRIT |
critical conditions |
| LOG_ERR |
error conditions |
| LOG_WARNING |
warning conditions |
| LOG_NOTICE |
normal, but significant, condition |
| LOG_INFO |
informational message |
| LOG_DEBUG |
debug-level message |
dns_get_record() Options
| Constant |
Description |
| DNS_A |
IPv4 Address Resource |
| DNS_MX |
Mail Exchanger Resource |
| DNS_CNAME |
Alias (Canonical Name) Resource |
| DNS_NS |
Authoritative Name Server Resource |
| DNS_PTR |
Pointer Resource |
| DNS_HINFO |
Host Info Resource (See IANA's
» Operating System Names
for the meaning of these values) |
| DNS_SOA |
Start of Authority Resource |
| DNS_TXT |
Text Resource |
| DNS_ANY |
Any Resource Record. On most systems
this returns all resource records, however
it should not be counted upon for critical
uses. Try DNS_ALL instead. |
| DNS_AAAA |
IPv6 Address Resource |
| DNS_ALL |
Iteratively query the name server for
each available record type. |
Table of Contents- checkdnsrr — Check DNS records corresponding to a given Internet host name or IP address
- closelog — Close connection to system logger
- debugger_off — Disable internal PHP debugger (PHP 3)
- debugger_on — Enable internal PHP debugger (PHP 3)
- define_syslog_variables — Initializes all syslog related constants
- dns_check_record — 别名 checkdnsrr
- dns_get_mx — 别名 getmxrr
- dns_get_record — Fetch DNS Resource Records associated with a hostname
- fsockopen — Open Internet or Unix domain socket connection
- gethostbyaddr — Get the Internet host name corresponding to a given IP address
- gethostbyname — Get the IP address corresponding to a given Internet host name
- gethostbynamel — Get a list of IP addresses corresponding to a given Internet host
name
- getmxrr — Get MX records corresponding to a given Internet host name
- getprotobyname — Get protocol number associated with protocol name
- getprotobynumber — Get protocol name associated with protocol number
- getservbyname — Get port number associated with an Internet service and protocol
- getservbyport — Get Internet service which corresponds to port and protocol
- header — Send a raw HTTP header
- headers_list — Returns a list of response headers sent (or ready to send)
- headers_sent — Checks if or where headers have been sent
- inet_ntop — Converts a packed internet address to a human readable representation
- inet_pton — Converts a human readable IP address to its packed in_addr representation
- ip2long — Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address
- long2ip — Converts an (IPv4) Internet network address into a string in Internet standard dotted format
- openlog — Open connection to system logger
- pfsockopen — Open persistent Internet or Unix domain socket connection
- setcookie — Send a cookie
- setrawcookie — Send a cookie without urlencoding the cookie value
- socket_get_status — 别名 stream_get_meta_data
- socket_set_blocking — 别名 stream_set_blocking
- socket_set_timeout — 别名 stream_set_timeout
- syslog — Generate a system log message
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