46 lines
1.1 KiB
PHP
46 lines
1.1 KiB
PHP
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<?php
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/**
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* FileHelper holds a collection of static methods, useful for generic purposes
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*
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*/
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class FileHelper {
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/**
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* Returns a safe filename by replacing all dangerous characters
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* with an underscore.
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*
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* @param string $filename The source filename to be "sanitized"
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*
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* @return Boolean string A safe version of the input filename
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*/
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public static function sanitizeFileName($filename) {
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// replace non letter or digits by -
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$filename = preg_replace('#[^\\pL\d]+#u', '-', $filename);
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// trim
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$filename = trim($filename, '-');
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// transliterate
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if (function_exists('iconv')) {
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$filename = iconv('utf-8', 'us-ascii//TRANSLIT', $filename);
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}
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// lowercase
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$filename = strtolower($filename);
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// remove unwanted characters
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$filename = preg_replace('#[^-\w]+#', '', $filename);
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if (empty($filename)) {
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return 'n-a';
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}
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return $filename;
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}
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}
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// usage:
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//$safe_filename = FileHelper::sanitizeFileName('#my unsaf&/file\name?"');
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?>;
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