What about the Fsockopen non-blocking mode? Why is it still blocking?

function Fsockopen_test () {    $hostname = ' m.cn ';    $url = '/test/1.php ';    $fp = Fsockopen ($hostname, $errno, $ERRSTR, 5);    if (! $fp) {        echo "$errstr ($errno)";        return false;    }    Stream_set_blocking ($fp, 0);//Opens the manual for non-blocking mode    $header = "GET $url http/1.1\r\n";     $header. = "Host: $hostname \ r \ n";    $header. = "connection:close\r\n\r\n";//long connection close    fwrite ($fp, $header);    Fclose ($FP);} Fsockopen_test ();

The code inside the requested/test/1.php:

Sleep (6); $fp  =  fopen ('./data.txt ',  ' W '); Fwrite ($FP, 111); fclose ($FP);

Through the browser console to see the actual or will wait for the test/1.php execution, this side only refresh. What is this for?

Reply to discussion (solution)

Yes, no problem.

echo Date (' y-m-d h:i:s '), Php_eol;fsockopen_test (), Echo date (' y-m-d h:i:s '), Php_eol;

can see no delay

Yes, no problem.

echo Date (' y-m-d h:i:s '), Php_eol;fsockopen_test (), Echo date (' y-m-d h:i:s '), Php_eol;

Can you see that there is no delay amount? How do I have this?

Yes, no problem.

echo Date (' y-m-d h:i:s '), Php_eol;fsockopen_test (), Echo date (' y-m-d h:i:s '), Php_eol;

You can see that there is no delay I changed to your code, and then the original output comments, and found that there is a delay?

Yes, no problem.

echo Date (' y-m-d h:i:s '), Php_eol;fsockopen_test (), Echo date (' y-m-d h:i:s '), Php_eol;

can see no delay
Find out why, comment out this code is OK

function Fsockopen_test () {    $hostname = ' m.cn ';    $url = '/test/1.php ';    $fp = Fsockopen ($hostname, $errno, $ERRSTR, 5);    if (! $fp) {        echo "$errstr ($errno)";        return false;    }    Stream_set_blocking ($fp, 0);//Opens the manual for non-blocking mode    $header = "GET $url http/1.1\r\n";     $header. = "Host: $hostname \ r \ n";    $header. = "connection:close\r\n\r\n";//long connection close    fwrite ($fp, $header);    /* $html = ';    while (!feof ($fp)) {        $html. =fgets ($FP);    }    echo $html; *    /Fclose ($FP);} Echo time (), '
'; Fsockopen_test (); Echo time (), '
';

