23 lines
589 B
PHP
23 lines
589 B
PHP
<?php
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/**
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* Returns the extension of the filename (path or URI) or an empty string.
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* @return string Extension of the filename starting with a dot.
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*/
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function getExtension($filename, $isURI = false) {
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# If $filename is an URI, get only the path component
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if ($isURI===true) $filename = parse_url($filename, PHP_URL_PATH);
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$extension = pathinfo($filename, PATHINFO_EXTENSION);
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# Special cases
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if (strpos($extension, ':')!==false) list($extension, ) = explode(':', $extension, 2);
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if (empty($extension)===false) $extension = '.' . $extension;
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return $extension;
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}
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?>
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