Current File : /home/vacivi36/intranet.vacivitta.com.br/protected/humhub/libs/Helpers.php
<?php
/**
* @link https://www.humhub.org/
* @copyright Copyright (c) 2017 HumHub GmbH & Co. KG
* @license https://www.humhub.com/licences
*/
namespace humhub\libs;
use Yii;
use yii\base\InvalidArgumentException;
use yii\base\Exception;
/**
* This class contains a lot of html helpers for the views
*
* @since 0.5
*/
class Helpers
{
/**
* Shorten a text string
*
* @param string $text - Text string you will shorten
* @param integer $length - Count of characters to show
* @return string
*/
public static function truncateText($text, $length): string
{
return self::trimText($text, $length);
}
public static function trimText($text, $length): string
{
$text = trim(preg_replace('#<br */?>#i', ' ', $text));
$length = abs((int)$length);
if (mb_strlen($text) > $length) {
$text = trim(mb_substr($text, 0, $length)) . '...';
}
return $text;
}
/**
* Compare two arrays values
* @param array $a - First array to compare against..
* @param array $b - Second array
*
* convert Objects: Helpers::arrayCompVal((array)$obj1, (array)$obj2)
*
* */
public static function arrayCompVal($a, $b)
{
if (!is_array($a) || !is_array($b)) {
return false;
}
sort($a);
sort($b);
return $a == $b;
}
/**
* Temp Function to use UTF8 SubStr
* @deprecated since 1.11 Use mb_substr() instead.
*
* @param string $str
* @param integer $from
* @param integer $len
* @return string
*/
public static function substru($str, $from, $len): string
{
return preg_replace('#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,' . $from . '}' . '((?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){0,' . $len . '}).*#s', '$1', $str);
}
/**
* Get a readable time format from seconds
* @param string $sekunden - Seconds you will formatting
* */
public static function getFormattedTime($sekunden)
{
$minus = '';
if ($sekunden < 0) {
$sekunden *= -1;
$minus = '-';
}
$minuten = bcdiv($sekunden, '60', 0);
$stunden = bcdiv($minuten, '60', 0);
$minuten = bcmod($minuten, '60');
if ($minuten < 10) {
$minuten = '0' . $minuten;
}
$stunden = bcmod($stunden, '24');
return $minus . $stunden . ':' . $minuten;
}
/**
* Returns bytes of a PHP Ini Setting Value
* E.g. 10M will converted into 10485760
*
* Source: http://php.net/manual/en/function.ini-get.php
*
* @param String $val
* @return int bytes
* @deprecated bug on PHP7 "A non well formed numeric value encountered"
* @see \humhub\libs\Helpers::getBytesOfIniValue instead
*/
public static function GetBytesOfPHPIniValue($val)
{
$val = trim($val);
$last = strtolower($val[strlen($val) - 1]);
switch ($last) {
case 'g':
$val *= 1024;
case 'm':
$val *= 1024;
case 'k':
$val *= 1024;
}
return $val;
}
/**
* Returns bytes of a PHP Ini Setting Value
* E.g. 10M will converted into 10485760
*
* Source: http://php.net/manual/en/function.ini-get.php#96996
*
* @param string $valueString
* @return int bytes
* @throws InvalidParamException
*/
public static function getBytesOfIniValue($valueString)
{
if ($valueString === null || $valueString === '') {
return 0;
}
if ($valueString === false) {
throw new InvalidArgumentException('Your configuration option of ini_get function does not exist.');
}
switch (substr($valueString, -1)) {
case 'M':
case 'm':
return (int)$valueString * 1048576;
case 'K':
case 'k':
return (int)$valueString * 1024;
case 'G':
case 'g':
return (int)$valueString * 1073741824;
default:
return (int)$valueString;
}
}
/**
* Returns a unique string
*
* @return string unique
*/
public static function GetUniqeId()
{
return str_replace('.', '', uniqid('', true));
}
/**
* Checks if the class has this class as one of its parents
*
* @param string $className
* @param string $type
* @return boolean
*/
public static function CheckClassType($className, $type = '')
{
$className = preg_replace('/[^a-z0-9_\-\\\]/i', '', $className);
if (is_array($type)) {
foreach ($type as $t) {
if (class_exists($className) && is_a($className, $t, true)) {
return true;
}
}
} else {
if (class_exists($className) && is_a($className, $type, true)) {
return true;
}
}
throw new Exception("Invalid class type! (" . $className . ")");
}
/**
* Check for sameness of two strings using an algorithm with timing
* independent of the string values if the subject strings are of equal length.
*
* The function can be useful to prevent timing attacks. For example, if $a and $b
* are both hash values from the same algorithm, then the timing of this function
* does not reveal whether or not there is a match.
*
* NOTE: timing is affected if $a and $b are different lengths or either is not a
* string. For the purpose of checking password hash this does not reveal information
* useful to an attacker.
*
* @see http://blog.astrumfutura.com/2010/10/nanosecond-scale-remote-timing-attacks-on-php-applications-time-to-take-them-seriously/
* @see http://codereview.stackexchange.com/questions/13512
* @see https://github.com/ircmaxell/password_compat/blob/master/lib/password.php
*
* @param string $a First subject string to compare.
* @param string $b Second subject string to compare.
* @return bool true if the strings are the same, false if they are different or if
* either is not a string.
*/
public static function same($a, $b)
{
if (!is_string($a) || !is_string($b)) {
return false;
}
$mb = function_exists('mb_strlen');
$length = $mb ? mb_strlen($a, '8bit') : strlen($a);
if ($length !== ($mb ? mb_strlen($b, '8bit') : strlen($b))) {
return false;
}
$check = 0;
for ($i = 0; $i < $length; $i += 1) {
$check |= (ord($a[$i]) ^ ord($b[$i]));
}
return $check === 0;
}
/**
* Set sql_mode=TRADITIONAL for mysql server.
*
* This static function is intended as closure for on afterOpen raised by yii\db\Connection and
* should be configured in dynamic.php like this: 'on afterOpen' => ['humhub\libs\Helpers', 'SqlMode'],
*
* This is mainly required for grouped notifications.
*
* @param $event
* @since 1.2.1
*/
public static function SqlMode($event)
{
/* set sql_mode only for mysql */
if ($event->sender->driverName == 'mysql') {
try {
$event->sender->createCommand('SET SESSION sql_mode=""; SET SESSION sql_mode="NO_ENGINE_SUBSTITUTION"')->execute();
} catch (\Exception $ex) {
Yii::error('Could not switch SQL mode: ' . $ex->getMessage());
}
}
}
}
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