note 105204 deleted from function.filesize by danbrown

From: Date: Tue, 02 Aug 2011 22:30:04 +0000
Subject: note 105204 deleted from function.filesize by danbrown
References: 1  Groups: php.notes 
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Note Submitter: wang.phillip ---- this is modified from arne's code below, which doesn't calculate the filesize correctly... This should be the correct one: function fsize($file) { // filesize will only return the lower 32 bits of // the file's size! Make it unsigned. $fmod = filesize($file); var_dump($fmod); if ($fmod < 0) $fmod += 2.0 * (PHP_INT_MAX + 1); var_dump($fmod); // find the upper 32 bits $i = 0; $myfile = fopen($file, "r"); // feof has undefined behaviour for big files. // after we hit the eof with fseek, // fread may not be able to detect the eof, // but it also can't read bytes, so use it as an // indicator. while (strlen(fread($myfile, 1)) === 1) { fseek($myfile, PHP_INT_MAX, SEEK_CUR); fseek($myfile, 1, SEEK_CUR); fseek($myfile, PHP_INT_MAX, SEEK_CUR); $i++; } fclose($myfile); --$i; // add the lower 32 bit to our 2 * PHP_INT_MAX multiplier return ($i * 2.0 * (PHP_INT_MAX + 1)) + $fmod; }

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