socket_sendto() - socket通信函数

是丫丫呀2年前 (2023-11-21)阅读数 32#技术干货

文章标签范例

socket_sendto()

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

Sends a message to a socket, whether it is connected or not

说明

socket_sendto(resource $socket,string $buf,int $len,int $flags,string $addr[,int $port= 0]): int

The functionsocket_sendto()sends$lenbytes from$bufthrough the socket$socketto the$portat the address$addr.

参数

$socket

A valid socket resource created using socket_create().

$buf

The sent data will be taken from buffer$buf.

$len

$lenbytes from$bufwill be sent.

socket_sendto() - socket通信函数

$flags

The value of$flagscan be any combination of the following flags, joined with the binary OR(|)operator.

Possible values for$flags

`MSG_OOB`	Send OOB(out-of-band)data.
`MSG_EOR`	Indicate a record mark. The sent data completes the record.
`MSG_EOF`	Close the sender side of the socket and include an appropriate notification of this at the end of the sent data. The sent data completes the transaction.
`MSG_DONTROUTE`	Bypass routing, use direct interface.

$addr

IP address of the remote host.

$port

$portis the remote port number at which the data will be sent.

返回值

socket_sendto()returns the number of bytes sent to the remote host, orFALSEif an error occurred.

范例

socket_sendto()Example

参见

socket_send()Sends data to a connected socket

Here's how you can make an udp broadcast, useful sometimes, and does seem hard to figure out hwo to do..

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