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<?php
/**
*
* @package Duplicator
* @copyright (c) 2022, Snap Creek LLC
*/
namespace Duplicator\Libs\Snap;
use Error;
use Exception;
class SnapUtil
{
/** @var int used in custom filter_input_custom for request (check _POST and _GET */
const INPUT_REQUEST = 10000;
/**
* Return array element value or default if not set
*
* @param mixed[] $array input array
* @param string $key array key
* @param boolean $required if is required thorw Exception if isn't in array
* @param mixed $default default value
*
* @return mixed
*/
public static function getArrayValue($array, $key, $required = true, $default = null)
{
if (array_key_exists($key, $array)) {
return $array[$key];
} else {
if ($required) {
throw new \Exception("Key {$key} not present in array");
} else {
return $default;
}
}
}
/**
* Gets the calling function name from where this method is called
*
* @param integer $backTraceBack backtrace level
*
* @return string Returns the calling function name from where this method is called
*/
public static function getCallingFunctionName($backTraceBack = 0)
{
$callers = debug_backtrace();
$backTraceL1 = 1 + $backTraceBack;
$backTraceL2 = 2 + $backTraceBack;
$result = '[' . str_pad(basename($callers[$backTraceL1]['file']), 25, '_', STR_PAD_RIGHT) . ':'
. str_pad((string) $callers[$backTraceL1]['line'], 4, ' ', STR_PAD_LEFT) . ']';
if (isset($callers[$backTraceL2])) {
$result .= ' [';
$result .= isset($callers[$backTraceL2]['class']) ? $callers[$backTraceL2]['class'] . '::' : '';
$result .= $callers[$backTraceL2]['function'];
$result .= ']';
}
return str_pad($result, 80, '_', STR_PAD_RIGHT);
}
/**
* Return a percentage
*
* @param int $startingPercent Low Percentage Limit
* @param int $endingPercent High Percentage Limit
* @param int $totalTaskCount Total count
* @param int $currentTaskCount Current count
*
* @return int
*/
public static function getWorkPercent($startingPercent, $endingPercent, $totalTaskCount, $currentTaskCount)
{
if ($totalTaskCount > 0) {
$percent = $startingPercent + (($endingPercent - $startingPercent) * ($currentTaskCount / (float) $totalTaskCount));
} else {
$percent = $startingPercent;
}
return min(max($startingPercent, $percent), $endingPercent);
}
/**
* Compare two versions like version_compare but the ability to enter the number of levels to compare.
* For example, if the level is 2 between 4.1.1 and 4.1.2.1, 4.1 is compared with 4.1 and so they are equal.
*
* @param string $version1 version one
* @param string $version2 version two
* @param string $operator operetor type
* @param int $vLevel version level 0 is all levels
*
* @return int|bool
*/
public static function versionCompare($version1, $version2, $operator = null, $vLevel = 0)
{
if ($vLevel > 0) {
$tV1 = array_slice(preg_split("/[.-]/", $version1), 0, $vLevel);
$version1 = implode('.', $tV1);
$tV2 = array_slice(preg_split("/[.-]/", $version2), 0, $vLevel);
$version2 = implode('.', $tV2);
}
return version_compare($version1, $version2, $operator);
}
/**
* Return version with level
*
* @param string $version version
* @param int $vLevel version level 0 is all levels
*
* @return string
*/
public static function getVersion($version, $vLevel = 0)
{
if ($vLevel > 0) {
$tV1 = array_slice(preg_split("/[.-]/", $version), 0, $vLevel);
$version = implode('.', $tV1);
}
return $version;
}
/**
* Return true if is PHP7+
*
* @return bool
*/
public static function isPHP7Plus()
{
static $isPHP7Plus = null;
if (is_null($isPHP7Plus)) {
$isPHP7Plus = version_compare(PHP_VERSION, '7.0.0', '>=');
}
return $isPHP7Plus;
}
/**
* Groups an array into arrays by a given key, or set of keys, shared between all array members.
*
* Based on {@author Jake Zatecky}'s {@link https://github.com/jakezatecky/array_group_by array_group_by()} function.
* This variant allows $key to be closures.
*
* @param mixed[] $array The array to have grouping performed on.
* @param mixed $key The key to group or split by. Can be a _string_, an _integer_, a _float_, or a _callable_.
* - If the key is a callback, it must return a valid key from the array. - If the key is
* _NULL_, the iterated element is skipped. - string|int callback ( mixed $item )
*
* @return mixed[]|null Returns a multidimensional array or `null` if `$key` is invalid.
*/
public static function arrayGroupBy(array $array, $key)
{
if (!is_string($key) && !is_int($key) && !is_float($key) && !is_callable($key)) {
trigger_error('array_group_by(): The key should be a string, an integer, or a callback', E_USER_ERROR);
}
$func = (!is_string($key) && is_callable($key) ? $key : null);
$_key = $key;
// Load the new array, splitting by the target key
$grouped = array();
foreach ($array as $value) {
$key = null;
if (is_callable($func)) {
$key = call_user_func($func, $value);
} elseif (is_object($value) && isset($value->{$_key})) {
$key = $value->{$_key};
} elseif (isset($value[$_key])) {
$key = $value[$_key];
}
if ($key === null) {
continue;
}
$grouped[$key][] = $value;
}
// Recursively build a nested grouping if more parameters are supplied
// Each grouped array value is grouped according to the next sequential key
if (func_num_args() > 2) {
$args = func_get_args();
foreach ($grouped as $key => $value) {
$params = array_merge(array($value), array_slice($args, 2, func_num_args()));
$grouped[$key] = call_user_func_array(array(__CLASS__, 'arrayGroupBy'), $params);
}
}
return $grouped;
}
/**
* Converts human readable types (10GB) to bytes
*
* @param string $from A human readable byte size such as 100MB
*
* @return int<-1, max> Returns and integer of the byte size, -1 if isn't well formatted
*/
public static function convertToBytes($from)
{
if (is_numeric($from)) {
return (int) $from;
}
$number = (int) substr($from, 0, -2);
switch (strtoupper(substr($from, -2))) {
case "KB":
return $number * 1024;
case "MB":
return $number * pow(1024, 2);
case "GB":
return $number * pow(1024, 3);
case "TB":
return $number * pow(1024, 4);
case "PB":
return $number * pow(1024, 5);
}
$number = (int) substr($from, 0, -1);
switch (strtoupper(substr($from, -1))) {
case "K":
return $number * 1024;
case "M":
return $number * pow(1024, 2);
case "G":
return $number * pow(1024, 3);
case "T":
return $number * pow(1024, 4);
case "P":
return $number * pow(1024, 5);
}
return -1;
}
/**
* Sanitize input for XSS code
*
* @param string $input The value to sanitize
*
* @return string Returns the input value cleaned up.
*/
public static function sanitize($input)
{
return htmlspecialchars(self::sanitizeNSChars($input));
}
/**
* Remove all non stamp chars from string
*
* @param string $string input string
*
* @return string
*/
public static function sanitizeNSChars($string)
{
return preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x9F]/u', '', (string) $string);
}
/**
* remove all non stamp chars from string and newline
* trim string
*
* @param string $string input string
*
* @return string
*/
public static function sanitizeNSCharsNewline($string)
{
return preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x9F\r\n]/u', '', (string) $string);
}
/**
* Remove all non stamp chars, newline, spaces and tabulation from string
*
* @param string $string input string
*
* @return string
*/
public static function sanitizeNSCharsNewlineTabs($string)
{
return preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x9F\r\n\s]/u', '', (string) $string);
}
/**
* remove all non stamp chars from string and newline
* trim string
*
* @param string $string input string
*
* @return string
*/
public static function sanitizeNSCharsNewlineTrim($string)
{
return trim(self::sanitizeNSCharsNewline($string));
}
/**
* Default filter sanitize input text, apply sanitizeNSCharsNewlineTrim function.
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.
* @param string $var_name Name of a variable to get.
* @param string $default default value if dont exists
*
* @return string
*/
public static function sanitizeTextInput($type, $var_name, $default = '')
{
$filter = FILTER_UNSAFE_RAW;
$options = array(
'options' => array( 'default' => null),
);
if ($type == self::INPUT_REQUEST) {
$result = self::filterInputRequest($var_name, $filter, $options);
} else {
$result = filter_input($type, $var_name, $filter, $options);
}
if (is_null($result)) {
return $default;
}
return self::sanitizeNSCharsNewlineTrim($result);
}
/**
* Determines whether a PHP ini value is changeable at runtime.
*
* @since 4.6.0
*
* @staticvar array $ini_all
*
* @link https://secure.php.net/manual/en/function.ini-get-all.php
*
* @param string $setting The name of the ini setting to check.
*
* @return bool True if the value is changeable at runtime. False otherwise.
*/
public static function isIniValChangeable($setting)
{
// if ini_set is disabled can change the values
if (!function_exists('ini_set')) {
return false;
}
static $ini_all;
if (!isset($ini_all)) {
$ini_all = false;
// Sometimes `ini_get_all()` is disabled via the `disable_functions` option for "security purposes".
if (function_exists('ini_get_all')) {
$ini_all = ini_get_all();
}
}
// Bit operator to workaround https://bugs.php.net/bug.php?id=44936 which changes access level to 63 in PHP 5.2.6 - 5.2.17.
if (isset($ini_all[$setting]['access']) && ( INI_ALL === ( $ini_all[$setting]['access'] & 7 ) || INI_USER === ( $ini_all[$setting]['access'] & 7 ) )) {
return true;
}
// If we were unable to retrieve the details, fail gracefully to assume it's changeable.
if (!is_array($ini_all)) {
return true;
}
return false;
}
/**
* get php.ini value
*
* @param string $key php ini value
* @param mixed $default default valu if init_get is disabled or key don't exists
* @param string $returnType the return type, accept only scalar values (bool, int, float, string)
*
* @return mixed
*/
public static function phpIniGet($key, $default, $returnType = 'string')
{
if (!function_exists('ini_get')) {
return $default;
}
if (($result = ini_get($key)) === false) {
return $default;
}
switch ($returnType) {
case "bool":
return filter_var($result, FILTER_VALIDATE_BOOLEAN);
case "int":
return (int) $result;
case "float":
return (float) $result;
case "string":
return (string) $result;
default:
throw new Exception('Invalid return type ' . $returnType);
}
}
/**
* The val value returns if it is between min and max otherwise it returns min or max
*
* @param int|float $val input value
* @param int|float $min min value
* @param int|float $max max value
*
* @return int
*/
public static function getIntBetween($val, $min, $max)
{
return min((int) $max, max((int) $min, (int) $val));
}
/**
* Gets a specific external variable by name and optionally filters it by request
*
* @param string $variable_name <p>Name of a variable to get.</p>
* @param int $filter <p>The ID of the filter to apply. The Types of filters manual page lists the available filters.</p>
* <p>If omitted, <b><code>FILTER_DEFAULT</code></b> will be used, which is equivalent to
* <b><code>FILTER_UNSAFE_RAW</code></b>. This will result in no filtering taking place by
* default.</p>
* @param mixed[]|int $options <p>Associative array of options or bitwise disjunction of flags.
* If filter accepts options, flags can be provided in "flags" field of array.</p>
*
* @return mixed Value of the requested variable on success
*
* @link http://php.net/manual/en/function.filter-input.php
* @see filter_var(), filter_input_array(), filter_var_array()
*/
public static function filterInputRequest($variable_name, $filter = FILTER_DEFAULT, $options = 0)
{
if (isset($_GET[$variable_name]) && !isset($_POST[$variable_name])) {
return filter_input(INPUT_GET, $variable_name, $filter, $options);
}
return filter_input(INPUT_POST, $variable_name, $filter, $options);
}
/**
* Return input from type
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV, self::INPUT_REQUEST
*
* @return mixed[]
*/
public static function getInputFromType($type)
{
switch ($type) {
case INPUT_GET:
return $_GET;
case INPUT_POST:
return $_POST;
case INPUT_COOKIE:
return $_COOKIE;
case INPUT_SERVER:
return $_SERVER;
case INPUT_ENV:
return $_ENV;
case self::INPUT_REQUEST:
return array_merge($_GET, $_POST);
default:
throw new Exception('Invalid type ' . $type);
}
}
/**
* Default filter sanitize string, apply sanitizeNSChars function.
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.
* @param string $var_name Name of a variable to get.
* @param mixed $default default value if dont exists
*
* @return string
*/
public static function filterInputDefaultSanitizeString($type, $var_name, $default = '')
{
$filter = FILTER_UNSAFE_RAW;
$options = array(
'options' => array( 'default' => null)
);
if ($type == self::INPUT_REQUEST) {
$result = self::filterInputRequest($var_name, $filter, $options);
} else {
$result = filter_input($type, $var_name, $filter, $options);
}
if (is_null($result)) {
return $default;
}
return self::sanitizeNSChars($result);
}
/**
* All characters that are not explicitly accepted are removed.
* By default, only alphanumeric characters are accepted.
*
* @param mixed $input input value
* @param string $extraAcceptChars extra accepted chars
*
* @return string|string[]
*/
public static function sanitizeStrict($input, $extraAcceptChars = '')
{
$regex = '/[^a-zA-Z0-9' . preg_quote($extraAcceptChars, '/') . ' ]/m';
if (is_scalar($input) || is_null($input)) {
$input = (string) $input;
} elseif (is_array($input)) {
} elseif (is_object($input)) {
$input = (array) $input;
} else {
$input = '';
}
if (is_array($input)) {
foreach ($input as $key => $val) {
$input[$key] = self::sanitizeStrict($val, $extraAcceptChars);
}
return $input;
}
$result = preg_replace($regex, '', $input);
return (is_null($result) ? '' : $result);
}
/**
* Sanitize value to int
*
* @param mixed $input Input value
* @param int $default Default value if input isnt valid
*
* @return int
*/
public static function sanitizeInt($input, $default = 0)
{
if (!is_scalar($input)) {
return $default;
} elseif (is_bool($input)) {
return (int) $input;
} else {
return filter_var($input, FILTER_VALIDATE_INT, array('options' => array( 'default' => $default)));
}
}
/**
* Sanitize value to bool
*
* @param mixed $input Input value
*
* @return bool
*/
public static function sanitizeBool($input)
{
if (!is_scalar($input)) {
return false;
} elseif (is_bool($input)) {
return $input;
} else {
return filter_var($input, FILTER_VALIDATE_BOOLEAN);
}
}
/**
* Sanitize value from input $_GET, $_POST, $_REQUEST ...
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV or SnapUtil::INPUT_REQUEST
* @param string $varName Name of a variable to get.
* @param mixed $default default value if var $varName don't exists
* @param string $extraAcceptChars extra accepted chars
*
* @return string|string[]|mixed return default value if varName isn't defined
*/
public static function sanitizeStrictInput($type, $varName, $default = false, $extraAcceptChars = '')
{
if (($value = self::getValueByType($type, $varName)) === null) {
return $default;
}
return self::sanitizeStrict($value, $extraAcceptChars);
}
/**
* Sanitize value from input $_GET, $_POST, $_REQUEST ...
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV or SnapUtil::INPUT_REQUEST
* @param string $varName Name of a variable to get.
* @param int $default default value if var $varName don't exists
*
* @return int return default value if varName isn't defined
*/
public static function sanitizeIntInput($type, $varName, $default = 0)
{
if (($value = self::getValueByType($type, $varName)) === null) {
return $default;
}
return self::sanitizeInt($value);
}
/**
* Sanitize value from input $_GET, $_POST, $_REQUEST ...
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV or SnapUtil::INPUT_REQUEST
* @param string $varName Name of a variable to get.
* @param null|bool $default default value if var $varName don't exists
*
* @return bool return default value if varName isn't defined
*/
public static function sanitizeBoolInput($type, $varName, $default = false)
{
if (($value = self::getValueByType($type, $varName)) === null) {
return $default;
}
return self::sanitizeBool($value);
}
/**
* Sanitize value from input $_GET, $_POST, $_REQUEST ...
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV or SnapUtil::INPUT_REQUEST
* @param string $varName Name of a variable to get.
* @param mixed $default default value if var $varName don't exists
*
* @return string|string[]|mixed return default value if varName isn't defined
*/
public static function sanitizeInput($type, $varName, $default = false)
{
if (($value = self::getValueByType($type, $varName)) === null) {
return $default;
}
return self::sanitize($value);
}
/**
* Return value input by type null if don't exists
*
* @param int $type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV or SnapUtil::INPUT_REQUEST
* @param string $varName Name of a variable to get.
*
* @return string|string[]|null
*/
protected static function getValueByType($type, $varName)
{
$doNothingCallback = function ($v) {
return $v;
};
if ($type === self::INPUT_REQUEST) {
$type = ((isset($_GET[$varName]) && !isset($_POST[$varName])) ? INPUT_GET : INPUT_POST);
}
$value = filter_input($type, $varName, FILTER_CALLBACK, array('options' => $doNothingCallback));
/** @var string|string[]|null $value */
return $value;
}
/**
* Gets external variables and optionally filters them
* <p>This function is useful for retrieving many values without repetitively calling <code>filter_input()</code>.</p>
*
* @param mixed[]|int $definition <p>An array defining the arguments.
* A valid key is a <code>string</code> containing a variable name and a valid value is either a filter type,
* or an <code>array</code> optionally specifying the filter, flags and options.
* If the value is an array, valid keys are <i>filter</i> which specifies the filter type,
* <i>flags</i> which specifies any flags that apply to the filter, and <i>options</i>
* which specifies any options that apply to the filter. See the example below for a better understanding.</p>
* <p>This parameter can be also an integer holding a filter constant.
* Then all values in the input array are filtered by this filter.</p>
* @param bool $add_empty <p>Add missing keys as <b><code>NULL</code></b> to the return value.</p>
*
* @return mixed An array containing the values of the requested variables on success.
*
* @link http://php.net/manual/en/function.filter-input-array.php
* @see filter_input(), filter_var_array()
*/
public static function filterInputRequestArray($definition = FILTER_DEFAULT, $add_empty = true)
{
if (!is_array($definition) || count($definition) === 0) {
return array();
}
$getKeys = array_keys($_GET);
$postKeys = array_keys($_POST);
$keys = array_keys($definition);
if (count(array_intersect($keys, $getKeys)) && !count(array_intersect($keys, $postKeys))) {
$type = INPUT_GET;
} else {
$type = INPUT_POST;
}
// phpcs:ignore PHPCompatibility.FunctionUse.NewFunctionParameters.filter_input_array_add_emptyFound
$result = filter_input_array($type, $definition, $add_empty);
if (!is_array($result)) {
$result = array();
foreach ($keys as $key) {
$result[$key] = null;
}
}
return $result;
}
/**
* Close all buffers and return content
*
* @param bool $getContent If true it returns buffer content, otherwise it is discarded
*
* @return string
*/
public static function obCleanAll($getContent = true)
{
$result = '';
for ($i = 0; $i < ob_get_level(); $i++) {
if ($getContent) {
$result .= ob_get_contents();
}
ob_clean();
}
return $result;
}
/**
* Array map recursively
*
* @param callable $callback callback function
* @param mixed[] $array array input
*
* @return mixed[]
*/
public static function arrayMapRecursive($callback, $array)
{
if (!is_array($array)) {
throw new Exception('$array must be an array');
}
if (!is_callable($callback)) {
throw new Exception('$callback must be callable');
}
$func = function ($item) use (&$func, &$callback) {
return is_array($item) ? array_map($func, $item) : call_user_func($callback, $item);
};
return array_map($func, $array);
}
/**
* Implemented array_key_first
*
* @link https://www.php.net/manual/en/function.array-key-first.php
*
* @param mixed[] $arr array input
*
* @return int|string|null
*/
public static function arrayKeyFirst($arr)
{
if (!function_exists('array_key_first')) {
foreach ($arr as $key => $unused) {
return $key;
}
return null;
} else {
// phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions.array_key_firstFound
return array_key_first($arr);
}
}
/**
* Get number of bit supported by PHP
*
* @return string
*/
public static function getArchitectureString()
{
return (PHP_INT_SIZE * 8) . '-bit';
}
/**
* In array check by callback
*
* @param mixed[] $haystack array input
* @param callable $callback callback function
*
* @return null|bool
*/
public static function inArrayExtended($haystack, $callback)
{
if (!is_callable($callback)) {
return null;
}
foreach ($haystack as $value) {
if (call_user_func($callback, $value)) {
return true;
}
}
return false;
}
/**
* This is a binary recursion, so it only works on an ordered array of integers.
* (If it is not ordered, it does not work)
*
* The advantage of using this search instead of normal array search is that the complexity goes from O(n) to O(log n).
*
* @param int[] $array array values
* @param int $x element to search
*
* @return bool
*/
public static function binarySearch($array, $x)
{
if (count($array) === 0) {
return false;
}
$low = 0;
$high = count($array) - 1;
while ($low <= $high) {
$mid = floor(($low + $high) / 2);
if ($array[$mid] == $x) {
return true;
}
if ($x < $array[$mid]) {
$high = $mid - 1;
} else {
$low = $mid + 1;
}
}
return false;
}
/**
* Generates a random password drawn from the defined set of characters.
* Copy of the wp_generate_password() function from wp-includes/pluggable.php with minor tweaks
*
* @param int $length Optional. The length of password to generate. Default 12.
* @param bool $special_chars Optional. Whether to include standard special characters.
* Default true.
* @param bool $extra_special_chars Optional. Whether to include other special characters.
* Used when generating secret keys and salts. Default false.
*
* @return string The random password.
*/
public static function generatePassword($length = 12, $special_chars = true, $extra_special_chars = false)
{
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
if ($special_chars) {
$chars .= '!@#$%^&*()';
}
if ($extra_special_chars) {
$chars .= '-_ []{}<>~`+=,.;:/?|';
}
$password = '';
for ($i = 0; $i < $length; $i++) {
$password .= substr($chars, self::rand(0, strlen($chars) - 1), 1);
}
return $password;
}
/**
* Generates a random number
* Copy of the wp_rand() function from wp-includes/pluggable.php with minor tweaks
*
* @param int $min Lower limit for the generated number
* @param int $max Upper limit for the generated number
*
* @return int A random number between min and max
*/
public static function rand($min = 0, $max = 0)
{
global $rnd_value;
// Some misconfigured 32bit environments (Entropy PHP, for example) truncate integers
// larger than PHP_INT_MAX to PHP_INT_MAX rather than overflowing them to floats.
$max_random_number = 3000000000 === 2147483647 ? (float) "4294967295" : 4294967295; // @phpstan-ignore-line
// 4294967295 = 0xffffffff
// We only handle Ints, floats are truncated to their integer value.
$min = (int) $min;
$max = (int) $max;
// Use PHP's CSPRNG, or a compatible method
static $use_random_int_functionality = null;
if (is_null($use_random_int_functionality)) {
$use_random_int_functionality = function_exists('random_int');
}
if ($use_random_int_functionality) {
try {
$_max = ( 0 != $max ) ? $max : $max_random_number;
// rand() can accept arguments in either order, PHP cannot.
$_max = max($min, $_max);
$_min = min($min, $_max);
// phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions.random_intFound
$val = random_int($_min, $_max);
if (false !== $val) {
return abs(intval($val));
} else { // @phpstan-ignore-line
$use_random_int_functionality = false;
}
} catch (Error $e) {
$use_random_int_functionality = false;
} catch (Exception $e) {
$use_random_int_functionality = false;
}
}
// Reset $rnd_value after 14 uses
// 32(md5) + 40(sha1) + 40(sha1) / 8 = 14 random numbers from $rnd_value
if (strlen($rnd_value) < 8) {
static $seed = '';
$rnd_value = md5(uniqid(microtime() . mt_rand(), true) . $seed);
$rnd_value .= sha1($rnd_value);
$rnd_value .= sha1($rnd_value . $seed);
$seed = md5($seed . $rnd_value);
}
// Take the first 8 digits for our value
$value = substr($rnd_value, 0, 8);
// Strip the first eight, leaving the remainder for the next call to rand().
$rnd_value = substr($rnd_value, 8);
$value = abs(hexdec($value));
// Reduce the value to be within the min - max range
if ($max != 0) {
$value = $min + ( $max - $min + 1 ) * $value / ( $max_random_number + 1 );
}
return abs(intval($value));
}
/**
* Returns true if the class exists, false otherwise
*
* @param string $className Name of the class to check if it exists
* @param boolean $autoload Parameter that will be passed to class_exists as second
*
* @return boolean
*/
public static function classExists($className, $autoload = true)
{
if (!class_exists($className, $autoload)) {
return false;
}
if (function_exists("ini_get")) {
$disabled = explode(',', ini_get('disable_classes'));
return in_array($className, $disabled) ? false : true;
}
// We can only suppose that it exists, can't be 100% sure, but it's the best guess
return true;
}
/**
* Function phpinfo wrapper
*
* @see https://www.php.net/manual/en/function.phpinfo.php
*
* @param int $flags see phpinfo function flags
*
* @return bool Returns true on success or false on failure.
*/
public static function phpinfo($flags = INFO_ALL)
{
if (!function_exists('phpinfo')) {
return false;
}
return phpinfo($flags);
}
/**
* Wrapper for set_time_limit to see if it is enabled.
*
* @since 1.6.4
*
* @param int $limit Time limit.
*
* @return void
*/
public static function duplicatorSetTimeLimit($limit = 0)
{
if (
function_exists('set_time_limit') &&
false === strpos(ini_get('disable_functions'), 'set_time_limit') &&
! ini_get('safe_mode')
) { // phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.safe_modeDeprecatedRemoved
@set_time_limit( $limit ); // @codingStandardsIgnoreLine
}
}
/**
* Wrapper for error_log to call only if it is enabled.
*
* @param string $message The error message that should be logged.
* @param int $message_type The type of error. It can be 0, 1, 2, 3 or 4.
* @param string|null $destination The destination of the error message. It can be a file, email, or a syslog.
* @param string|null $additional_headers Additional headers to be sent with the email.
*
* @return bool Returns true on success or false on failure.
*/
public static function errorLog($message, $message_type = 0, $destination = null, $additional_headers = null)
{
if (function_exists('error_log')) {
return error_log($message, $message_type, $destination, $additional_headers);
}
return false;
}
}