简单实用socket

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@socket_set_option($socket, SOL_SOCKET, SO_RCVTIMEO,array("sec"=>10, "usec"=>0));当socket_read得不到响应，这里设置时间可以跳过不会陷入死循环
3 r8 b/ j: e. d4 ^5 C' v" Z. l现在socket读写数据的流程是这样的：
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$ ?& B, ~# b: C$ I6 @$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

socket_set_option($socket,SOL_SOCKET,SO_RCVTIMEO,array("sec"=>60, "usec"=>0 ) );
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& E8 w% a( j3 I5 s2 V! O/ @socket_connect($socket, IP, PORT);

socket_write($socket, $strxml, strlen($strxml);
+ z2 K( z9 T* ~0 ?  G/ F# V$back = socket_read($socket, 8192);

! x) f& x2 ?& b, lsocket_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($socket, SOL_SOCKET, SO_RCVTIMEO,array("sec"=>3, "usec"=>0));//接受超时
socket_set_option($socket, SOL_SOCKET, SO_SNDTIMEO,array("sec"=>2, "usec"=>0));//发送超时

https://blog.csdn.net/sn_qmzm521/article/details/80756396
$ q* q3 n/ B2 ghttps://blog.csdn.net/Hiking_Tsang/article/details/84788448
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