this is my code
$line = trim(fgets(STDIN));
echo $line;
what browser shows:
Warning: fgets() expects parameter 1 to be resource, string given in /storage/emulated/0/coding/mobilephp

As mentioned in the article posted by @ryantroop, fgets(stream) will also return the newline. If you don't want it, you will either have to trim it or use stream_get_line(). FWIW, you can't use STDIN if your script is being read from stdin... :-) Read this: http://php.net/manual/en/features.commandline.io-streams.php

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