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<?php |
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|
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namespace WebPConvert\Convert\Helpers; |
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|
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/** |
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* Get/parse shorthandsize strings from php.ini as bytes. |
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* |
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* Parse strings like "1k" into bytes (1024). |
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* |
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* @package WebPConvert |
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* @author Bjørn Rosell <[email protected]> |
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* @since Class available since Release 2.0.0 |
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*/ |
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class PhpIniSizes |
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{ |
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|
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/** |
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* Parse a shordhandsize string as the ones returned by ini_get() |
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* |
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* Parse a shorthandsize string having the syntax allowed in php.ini and returned by ini_get(). |
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* Ie "1K" => 1024. |
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* Strings without units are also accepted. |
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* The shorthandbytes syntax is described here: https://www.php.net/manual/en/faq.using.php#faq.using.shorthandbytes |
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* |
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* @param string $shortHandSize A size string of the type returned by ini_get() |
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* @return float|false The parsed size (beware: it is float, do not check high numbers for equality), |
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* or false if parse error |
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*/ |
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public static function parseShortHandSize($shortHandSize) |
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{ |
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|
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$result = preg_match("#^\\s*(\\d+(?:\\.\\d+)?)([bkmgtpezy]?)\\s*$#i", $shortHandSize, $matches); |
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if ($result !== 1) { |
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return false; |
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} |
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|
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// Truncate, because that is what php does. |
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$digitsValue = floor($matches[1]); |
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|
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if ((count($matches) >= 3) && ($matches[2] != '')) { |
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$unit = $matches[2]; |
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|
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// Find the position of the unit in the ordered string which is the power |
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// of magnitude to multiply a kilobyte by. |
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$position = stripos('bkmgtpezy', $unit); |
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|
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return floatval($digitsValue * pow(1024, $position)); |
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} else { |
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return $digitsValue; |
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} |
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} |
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|
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/* |
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* Get the size of an php.ini option. |
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* |
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* Calls ini_get() and parses the size to a number. |
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* If the configuration option is null, does not exist, or cannot be parsed as a shorthandsize, false is returned |
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* |
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* @param string $varname The configuration option name. |
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* @return float|false The parsed size or false if the configuration option does not exist |
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*/ |
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public static function getIniBytes($iniVarName) |
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{ |
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$iniVarValue = ini_get($iniVarName); |
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if (($iniVarValue == '') || $iniVarValue === false) { |
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return false; |
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} |
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return self::parseShortHandSize($iniVarValue); |
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} |
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} |
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