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Till Klampaeckel' Blog:
PHP parse errors with cgi and nginx
Mar 16, 2010 @ 16:18:59

Till Klampaeckel has a very quick post about a problem he was coming across when using PHP as a CGI on the nginx web server. It was throwing errors ("client prematurely closed connection...") with no evident cause.

The issue was a PHP parse error which I overlooked when I added a new file. The weird thing is, I had nothing in the logs (E_ALL, display_errors is off, but all logs are enabled and I tailed them using multitail) and nginx only displayed a blank page. The errors above were in nginx's own log file.

The multitail command lets you run the "tail" command on more than one file at a time and view them split out in your console for easier reference. The full error message reads:

client closed prematurely connection, so upstream connection is closed too while sending request to upstream, client: a.a.a.a, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/tmp/.fastcgi.till/socket:", host: "localhost"
tagged: nginx parse error multitail debug

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