Description:
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fread($handle, 0) generates a warning where it did not in earlier versions.

This typically occurs in situations where the filesize is calculated:
  fread($handle, filesize($filename));

(where $handle is the result of opening file $filename, and $filename is the name of a zero-byte file)

Reproduce code:
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// Taken from fread documentation, will generate WARNING
// if something.txt exists and is empty (0 bytes)

// get contents of a file into a string
$filename = "/usr/local/something.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename));
fclose($handle);


Expected result:
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Would expect $contents == '', no errors or warnings

Actual result:
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Warning: fread(): Length parameter must be greater than 0. in xx on line yy