PHPfsockopen function problem. This script is not blocked and other scripts fail to be triggered.

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$ Host = 'www .abc.com '; $ port = 80; $ query = "admin/mi. php? Key = value "; $ fp = @ fsockopen ($ host, $ port, $ errno, $ errstr, 30); if ($ fp) {$ out =" GET /". $ query. "HTTP/1.1 \ r \ n"; $ out. = "Host :". $ host. "\ r \ n"; $ out. = "Connection: Close \ r \ n"; // 0, the resource stream will be converted to non-blocking mode; 1, the resource stream is converted to the blocking mode. @ Stream_set_blocking ($ fp, 0); @ stream_set_timeout ($ fp, 5); fwrite ($ fp, $ out); // sleep (1 ); // Key location fclose ($ fp);} else {echo "$ errstr ($ errno)
\ N ";}------------- check that SLEEP (1) successfully requested www.abc.com. If no SLEEP (1) request fails, what is the FSOCKOPEN operating mechanism? I don't want to block access to www.abc.com/admin/mi.php in this script. It only needs to trigger the execution of MI. PHP.

Reply content:

$ Host = 'www .abc.com '; $ port = 80; $ query = "admin/mi. php? Key = value "; $ fp = @ fsockopen ($ host, $ port, $ errno, $ errstr, 30); if ($ fp) {$ out =" GET /". $ query. "HTTP/1.1 \ r \ n"; $ out. = "Host :". $ host. "\ r \ n"; $ out. = "Connection: Close \ r \ n"; // 0, the resource stream will be converted to non-blocking mode; 1, the resource stream is converted to the blocking mode. @ Stream_set_blocking ($ fp, 0); @ stream_set_timeout ($ fp, 5); fwrite ($ fp, $ out); // sleep (1 ); // Key location fclose ($ fp);} else {echo "$ errstr ($ errno)
\ N ";}------------- check that SLEEP (1) successfully requested www.abc.com. If no SLEEP (1) request fails, what is the FSOCKOPEN operating mechanism? I don't want to block access to www.abc.com/admin/mi.php in this script. It only needs to trigger the execution of MI. PHP.

Add usleep (1000) to the key point. [latency: 1000 microseconds = 1 millisecond = 0.001 seconds. Currently stable.

--- Cloud network opening

$fpBy youclose. No blocking does not mean that the data can be sent completely. The data sending process is actually quite long. You need to resolve the domain name, establish a link, and wait for the task to be completed.closeThe probability of failure is very high.