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Reading . or .. using fread/fopen never ends on PHP?

+3 votes
221 views

Discovered today: fopen() opens '.' and '..' but fread() returns nothing without errors nor end-of-file, so this loop:

 $f = fopen('.', 'r');
 if( $f === FALSE ) die("fopen failed");
 $n = 0;
 while(($s = fread($f, 10)) !== FALSE)
 $n += strlen($s);
 fclose($f);
 echo "total bytes read: $nn";

never ends! The same happens with '..'. Tested on PHP 5.6.3 and 7.0.0 under Slackware 14.1 32-bits. Under Vista, instead, fopen() fails as expected.

Bug or specific feature under Linux?

posted Mar 2, 2015 by Amit Mishra

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