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utils.php
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utils.php
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<?php
/**
* Parse a human readable string for a number of bytes
*
* @param string Input string
* @return int Number of bytes
*/
function parse_bytes($str)
{
if (is_numeric($str))
return intval($str);
if (preg_match('/([0-9]+)([a-z])/i', $str, $regs))
{
$bytes = floatval($regs[1]);
switch (strtolower($regs[2]))
{
case 'g':
$bytes *= 1073741824;
break;
case 'm':
$bytes *= 1048576;
break;
case 'k':
$bytes *= 1024;
break;
}
}
return intval($bytes);
}
/**
* Create a human readable string for a number of bytes
*
* @param int Number of bytes
* @return string Byte string
*/
function show_bytes($bytes)
{
if ($bytes > 1073741824)
{
$gb = $bytes/1073741824;
$str = sprintf($gb >= 10 || $gb-intval($gb) == 0 ? "%d GB" : "%.1f GB", $gb);
}
else if ($bytes > 1048576)
{
$mb = $bytes/1048576;
$str = sprintf($mb >= 10 || $mb-intval($mb) == 0 ? "%d MB" : "%.1f MB", $mb);
}
else if ($bytes > 1024)
$str = sprintf("%d KB", round($bytes/1024));
else
$str = sprintf('%d B', $bytes);
return $str;
}
/**
* Remove all non-ascii and non-word chars
* except . and -
*/
function asciiwords($str)
{
return preg_replace(array('/\s+/', '/[^a-z0-9\_\-\.]/i'), array('_',''), $str);
}
?>