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<?php namespace Comodojo\Zip\Foundation\Utils; |
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use \InvalidArgumentException; |
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/** |
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* @package Comodojo Foundation |
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* @author Marco Giovinazzi <[email protected]> |
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* @license MIT |
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* |
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* LICENSE: |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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class UniqueId { |
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/** |
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* Generate a custom uid starting from a prefix |
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* |
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* The result uid format will be $string-[random] |
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* |
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* @param string $prefix |
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* @param int $length |
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* @return string |
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*/ |
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public static function generateCustom($prefix, $length=128) { |
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if ( $length <= (strlen($prefix)+1) ) { |
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throw new InvalidArgumentException("Uid length cannot be smaller than prefix length +1"); |
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} |
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return "$prefix-".self::generate($length-(strlen($prefix)+1)); |
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} |
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/** |
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* Generate an uid |
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* |
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* @param int $length |
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* @return string |
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*/ |
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public static function generate($length=128) { |
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if ($length < 32) { |
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return substr(self::getUid(), 0, $length); |
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} else if ($length == 32) { |
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return self::getUid(); |
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} else { |
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$numString = (int)($length/32) + 1; |
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$randNum = ""; |
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for ($i = 0; $i < $numString; $i++) $randNum .= self::getUid(); |
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return substr($randNum, 0, $length); |
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} |
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} |
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/** |
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* Generate an uid (128 bit / 32 char random) |
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* |
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* @param int $length |
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* @return string |
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*/ |
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protected static function getUid() { |
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return md5(uniqid(rand(), true), 0); |
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} |
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} |
comodojo /
zip
