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<?php |
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namespace ierusalim\Random; |
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/** |
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* This class RandomArray is intended for generating Random Arrays |
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* |
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* PHP Version 5.6 |
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* |
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* @package ierusalim\RandomArray |
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* @author Alexander Jer <[email protected]> |
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* @copyright 2017, Ierusalim |
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* @license https://opensource.org/licenses/Apache-2.0 Apache-2.0 |
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* |
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* Examples of use: |
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* Initialize: |
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* $g = new RandomArray(); |
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* |
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* //Generate random array with default parameters: |
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* $arr = $g->genRandomArray(); |
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* print_r($arr); |
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* |
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* //Generate random array with string keys from listed chars, 3-9 chars length |
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* $g->setKeysModel(3,9,'abcdefghijklmnopqrstuvwxyz'); |
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* $g->setValuesModel(0,100); //random numeric values range from 0 to 100 |
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* $arr = $g->genRandomArray(10,15,0); //generate 10-15 elements (not nested) |
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* print_r($arr); |
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* |
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*/ |
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class RandomArray extends RandomStr |
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{ |
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/** |
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* Set this limit to avoid generation unexpected too large arrays |
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* |
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* @var integer |
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*/ |
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public $lim_elements = 10000; |
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/** |
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* Model number for generation random Keys for Arrays |
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* if 0 then array keys will be simple 1,2,3... numeric |
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* if 1 then array keys will be numeric from min_arr_key to max_arr_key |
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* if 2 then array keys will be string len from min_arr_key to max_arr_key |
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* This value setting by function setKeysModel() |
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* |
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* @var integer |
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*/ |
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protected $keys_model; |
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/** |
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* Model number for generation random Values for Arrays |
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* if 0 then array values will be numeric from 0 to 65535 |
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* if 1 then array values will be numeric from min_arr_val to max_arr_val |
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* if 2 then array values will be string len from min_arr_val to max_arr_val |
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* This value setting by function setValuesModel() |
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* |
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* @var integer |
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*/ |
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protected $values_model; |
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/** |
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* Value for generation random Keys for Arrays |
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* This is minimal number for random numbers generation, |
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* or minimal length of string for random string array-keys generation |
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* This value setting by function setValuesModel() |
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* |
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* @var integer |
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*/ |
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protected $min_arr_key; |
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/** |
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* Value for generation random Keys for Arrays |
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* This is maximal number for random numbers generation, |
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* or maximal length of string for random string array-keys generation |
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* This value setting by function setKeysModel() |
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* |
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* @var integer |
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*/ |
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protected $max_arr_key; |
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/** |
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* Value for generation random Values for Arrays |
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* This is minimal number for random numbers generation, |
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* or minimal length of string for random string array-values generation |
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* This value setting by function setValuesModel() |
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* |
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* @var integer |
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*/ |
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protected $min_arr_val; |
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/** |
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* Value for generation random Values for Arrays |
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* This is maximal number for random numbers generation, |
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* or maximal length of string for random string array-values generation |
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* |
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* @var integer |
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*/ |
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protected $max_arr_val; |
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/** |
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* Value generate function |
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* calling if values_model == 3 |
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* |
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* @var callable |
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*/ |
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public $fn_gen_value; |
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/** |
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* Key generate function |
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* calling if keys_model == 3 |
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* |
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* @var callable |
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*/ |
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public $fn_gen_key; |
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/** |
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* Init parameter - string of chars for generation array values |
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* Prefer to leave blank and use function setValuesModel for set it. |
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* |
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* @param string|null $init_charset_for_val |
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*/ |
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public function __construct($init_charset_for_val = null, $utf8mode = false) |
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{ |
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parent::__construct($init_charset_for_val, $utf8mode); |
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$this->setKeysModel(); |
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if (\is_null($init_charset_for_val)) { |
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$this->setValuesModel(1, 16, $this->char_sets[0]); |
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} else { |
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$this->setValuesModel(1, 16, $init_charset_for_val); |
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} |
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} |
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/** |
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* Counting all values in array (recursive) |
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* |
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* @param array $arr |
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* @param integer $cnt |
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* |
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* @return integer |
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*/ |
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public function countArrayValuesRecursive(&$arr, $cnt = 0) |
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{ |
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\array_walk_recursive($arr, function ($v, $k) use (&$cnt) { |
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$cnt++; |
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}); |
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return $cnt; |
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} |
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/** |
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* Counting the maximum depth of nesting of arrays in an array (recursive) |
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* |
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* @param array $arr |
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* @param integer $c_depth |
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* |
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* @return integer |
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*/ |
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public function countArrayMaxDepth($arr, $c_depth = 0) |
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{ |
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if (!is_array($arr)) { |
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return false; |
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} |
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$m_depth = $c_depth; |
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\array_walk($arr, function ($v, $k) use ($c_depth, &$m_depth) { |
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if (is_array($v)) { |
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$new_depth = $this->countArrayMaxDepth($v, $c_depth+1); |
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if ($new_depth > $m_depth) { |
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$m_depth = $new_depth; |
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} |
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} |
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}); |
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return $m_depth; |
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} |
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/** |
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* Set model for generation keys for random arrays |
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* |
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* @param integer $min |
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* @param integer $max |
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* @param string|null $chars |
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*/ |
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public function setKeysModel( |
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$min = 1, |
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$max = null, |
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$chars = null, |
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$utf8mode = false |
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) { |
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if (empty($chars)) { |
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//Numeric keys model |
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$this->keys_model = 1; |
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if ($min == 1 && (\is_null($max))) { |
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//Non-changes key model (numeric 0,1,2...) |
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$this->keys_model = 0; |
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} |
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if (\is_null($max)) { |
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$max = 65535; |
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} |
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} else { |
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//Random-string keys model |
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$this->keys_model = 2; |
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//set $chars as charset number 1 |
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$this->char_sets[1] = $chars; |
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if ($utf8mode) { |
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$this->explodeUtf8(); |
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} |
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} |
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$this->min_arr_key = $min; |
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$this->max_arr_key = is_null($max) ? 16 : $max; |
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} |
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/** |
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* Set model for generation values for random arrays |
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* |
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* @param integer $min |
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* @param integer $max |
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* @param string|null $chars |
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*/ |
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public function setValuesModel( |
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$min = 0, |
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$max = 65535, |
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$chars = null, |
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$utf8mode = false |
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) { |
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if (empty($chars)) { |
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//Numeric values model |
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$this->values_model = 1; |
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if (!$min && $max==65535) { |
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//Non-changes values model (random number from 0 to 65535) |
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$this->values_model=0; |
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} |
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} else { |
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//Random-string values model |
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$this->values_model = 2; |
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//set $chars as charset number 2 |
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$this->char_sets[2] = $chars; |
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if ($utf8mode) { |
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$this->explodeUtf8(); |
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} |
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} |
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$this->min_arr_val = $min; |
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$this->max_arr_val = $max; |
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} |
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/** |
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* Set function for generate values for random array |
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* |
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* @param callable $gen_fn |
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*/ |
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public function setValuesModelFn(callable $gen_fn) |
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{ |
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$this->values_model = 3; |
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$this->fn_gen_value = $gen_fn; |
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} |
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/** |
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* Set function for generate keys for random array |
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* |
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* @param callable $gen_fn |
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*/ |
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public function setKeysModelFn(callable $gen_fn) |
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{ |
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$this->keys_model = 3; |
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$this->fn_gen_key = $gen_fn; |
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} |
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/** |
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* Random Array generate |
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* |
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* Parameters $min_elem_cnt and $max_elem_cnt define the minimum and |
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* maximum number of elements of generated arrays |
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* |
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* Parameter $theshold define chance of generating scalar or nested array |
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* If 0 is specified, scalar will always be generated, never nested array |
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* if 65535 specified, nested array will be generated until reach $lim_depth |
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* if 32768 specified the probability of generating array or scalar is 50/50 |
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* Only scalar generate if the depth of array nesting reached $lim_depth |
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* |
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* No more than $lim_elements of elements will be generated total |
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* |
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* @param integer $min_elem_cnt Min.count of elements in array (and nested) |
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* @param integer $max_elem_cnt Max.count of elements in array (and nested) |
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* @param integer $threshold Chance array or string generation (0-65535) |
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* @param integer $lim_depth Depth limit of nesting arrays |
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* @param integer $lim_elements Limit number of generated elements |
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* @param string $root Key of this array (may be needed for nested arrays) |
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* |
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* @return array |
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*/ |
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public function genRandomArray( |
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$min_elem_cnt = 3, |
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$max_elem_cnt = 10, |
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$threshold = 32768, |
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$lim_depth = 3, |
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$lim_elements = 10000, |
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$root = '' |
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) { |
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if ($lim_elements) { |
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$this->lim_elements = $lim_elements; |
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} |
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if ($lim_depth<1 |
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|| $this->lim_elements < 0 |
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|| $this->max_arr_key < 0 |
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|| $this->max_arr_key < $this->min_arr_key |
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|| $this->max_arr_val < 0 |
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|| $this->max_arr_val < $this->min_arr_val |
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) { |
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return false; |
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} |
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$elem_cnt = mt_rand($min_elem_cnt, $max_elem_cnt); |
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if ($elem_cnt > $this->lim_elements) { |
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$elem_cnt = $this->lim_elements; |
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} |
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$r_arr = []; |
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$gen_arr = \unpack('v*', \call_user_func($this->rnd_fn, $elem_cnt*2)); |
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$this->lim_elements-=$elem_cnt; |
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foreach ($gen_arr as $k => $v) { |
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if ($v > $threshold || $lim_depth<2 || $this->lim_elements <2) { |
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if ($this->values_model) { |
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if ($this->values_model == 3) { |
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$v = \call_user_func($this->fn_gen_value, |
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\compact('k', 'v', 'threshold', 'lim_depth', 'root') |
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); |
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} else { |
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$v = mt_rand($this->min_arr_val, $this->max_arr_val); |
|
326
|
|
|
if ($this->values_model == 2) { |
|
327
|
|
|
$v = $this->genRandomStr($v, 2); |
|
328
|
|
|
} |
|
329
|
|
|
} |
|
330
|
|
|
} else { |
|
331
|
|
|
if (!$this->keys_model) { |
|
332
|
|
|
continue; |
|
333
|
|
|
} |
|
334
|
|
|
} |
|
335
|
|
|
} else { |
|
336
|
|
|
$v = $this->genRandomArray( |
|
337
|
|
|
$min_elem_cnt, |
|
338
|
|
|
$max_elem_cnt, |
|
339
|
|
|
$threshold, |
|
340
|
|
|
$lim_depth - 1, |
|
341
|
|
|
0 |
|
342
|
|
|
); |
|
343
|
|
|
} |
|
344
|
|
|
if ($this->keys_model) { |
|
345
|
|
|
if ($this->keys_model === 3) { |
|
346
|
|
|
$k = \call_user_func($this->fn_gen_key, |
|
347
|
|
|
\compact('k', 'v', 'threshold', 'lim_depth', 'root') |
|
348
|
|
|
); |
|
349
|
|
|
} else { |
|
350
|
|
|
$k = \mt_rand($this->min_arr_key, $this->max_arr_key); |
|
351
|
|
|
if ($this->keys_model === 2) { |
|
352
|
|
|
$k = $this->genRandomStr($k, 1); |
|
353
|
|
|
} |
|
354
|
|
|
} |
|
355
|
|
|
$r_arr[$k] = $v; |
|
356
|
|
|
} else { |
|
357
|
|
|
$gen_arr[$k] = $v; |
|
358
|
|
|
} |
|
359
|
|
|
} |
|
360
|
|
|
|
|
361
|
|
|
return $this->keys_model ? $r_arr : $gen_arr; |
|
|
|
|
|
|
362
|
|
|
} |
|
363
|
|
|
} |
|
364
|
|
|
|
ierusalim /
php-random-gen
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This check looks for parameters that have been defined for a function or method, but which are not used in the method body.