简单实用socket

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@socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO,array("sec"=>10, "usec"=>0));当socket_read得不到响应，这里设置时间可以跳过不会陷入死循环
5 ]# o5 M9 s+ w1 ]. Q$ O, q* Z现在socket读写数据的流程是这样的：

! M  X5 h# k; ^4 K( t( h$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

3 y: p9 Q' e( L3 J" H+ t. Lsocket_set_option($socket,SOL_SOCKET,SO_RCVTIMEO,array("sec"=>60, "usec"=>0 ) );

socket_connect($socket, IP, PORT);
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$ j5 l8 H) Z3 b" Wsocket_write($socket, $strxml, strlen($strxml);
$back = socket_read($socket, 8192);

8 ^9 U2 }, R/ i7 ]3 n' |socket_read有时候收不到返回数据，应该是超时了，如何修改超时时间？
socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO,array("sec"=>3, "usec"=>0));//接受超时
" {2 X4 u- t% bsocket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO,array("sec"=>2, "usec"=>0));//发送超时
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https://blog.csdn.net/sn_qmzm521/article/details/80756396
https://blog.csdn.net/Hiking_Tsang/article/details/84788448
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