Iterating

each
Definition
Arr::each(array|Iterator|IteratorAggregate $iterable, callable $callback, int $mode = self::EACH_VALUE): array|Iterator|IteratorAggregate
Description
Traverse through array or iterable object and call callback for each element (ignoring the result).
Modes
Constant name
Description
EACH_VALUE
Iterate using callback in form of function($value)
EACH_KEY_VALUE
Iterate using callback in form of function($key, $value)
EACH_VALUE_KEY
Iterate using callback in form of function($value, $key)
EACH_VALUE_KEYS_LIST
Iterate using callback in form of function($value, $key1, $key2, ...)

Only for array $iterable
EACH_KEYS_ARRAY_VALUE
Iterate using callback in form of function(array $keys, $value)

Only for array $iterable
Examples
$array = [
    1 => [
        2 => 'a',
        3 => 'b',
        4 => [
            5 => 'c',
        ],
    ],
    'test' => 'd',
];
​
// Value only - using default EACH_VALUE mode
Arr::each($array, function ($value) {
  print_r($value);
  // [ 2 => 'a', ...]
  // 'd'
});
​
// Key, Value
Arr::each($array, function ($key, $value) {
  echo "{$key}: \t\t";
  print_r($value);
  // 1:      [2 => 'a', ...]
  // test:   'd'
}, Arr::EACH_KEY_VALUE);
​
// Value, Key
Arr::each($array, function ($value, $key) {
  echo "{$key}: \t\t";
  print_r($value);
  // 1:      [2 => 'a', ...]
  // test:   'd'
}, Arr::EACH_VALUE_KEY);
​
// Value, Keys list
Arr::each($array, function ($value, ...$keys) {
  echo implode('.', $keys) . ': \t\t';
  print_r($value);
  // 1.2:    'a'
  // 1.3:    'b'
  // 1.4.5:  'c'
  // test:   'd'
}, Arr::EACH_VALUE_KEYS_LIST);
​
​
// Keys array, value
Arr::each($array, function (array $keys, $value) {
  echo implode('.', $keys) . ': \t\t';
  print_r($value);
  // 1.2:    'a'
  // 1.3:    'b'
  // 1.4.5:  'c'
  // test:   'd'
}, Arr::EACH_KEYS_ARRAY_VALUE);

Traversing array - Previous

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Mapping

Last updated 2 years ago

Constant name	Description
EACH_VALUE	Iterate using callback in form of `function($value)`
EACH_KEY_VALUE	Iterate using callback in form of `function($key, $value)`
EACH_VALUE_KEY	Iterate using callback in form of `function($value, $key)`
EACH_VALUE_KEYS_LIST	Iterate using callback in form of `function($value, $key1, $key2, ...)` Only for array `$iterable`
EACH_KEYS_ARRAY_VALUE	Iterate using callback in form of `function(array $keys, $value)` Only for array `$iterable`