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