Iterating

each
Definition
1
Arr::each(array|Iterator|IteratorAggregate $iterable, callable $callback, int $mode = self::EACH_VALUE): array|Iterator|IteratorAggregate
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Description
Traverse through array or iterable object and call callback for each element (ignoring the result).
Modes
Constant name
Description
EACH_VALUE
Iterate using callback in form of function($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 $iterable
Examples
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$array = [
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    1 => [
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        2 => 'a',
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        3 => 'b',
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        4 => [
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            5 => 'c',
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        ],
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    ],
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    'test' => 'd',
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];
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​
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// Value only - using default EACH_VALUE mode
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Arr::each($array, function ($value) {
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  print_r($value);
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  // [ 2 => 'a', ...]
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  // 'd'
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});
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​
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// Key, Value
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Arr::each($array, function ($key, $value) {
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  echo "{$key}: \t\t";
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  print_r($value);
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  // 1:      [2 => 'a', ...]
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  // test:   'd'
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}, Arr::EACH_KEY_VALUE);
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​
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// Value, Key
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Arr::each($array, function ($value, $key) {
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  echo "{$key}: \t\t";
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  print_r($value);
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  // 1:      [2 => 'a', ...]
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  // test:   'd'
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}, Arr::EACH_VALUE_KEY);
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​
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// Value, Keys list
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Arr::each($array, function ($value, ...$keys) {
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  echo implode('.', $keys) . ': \t\t';
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  print_r($value);
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  // 1.2:    'a'
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  // 1.3:    'b'
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  // 1.4.5:  'c'
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  // test:   'd'
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}, Arr::EACH_VALUE_KEYS_LIST);
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​
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​
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// Keys array, value
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Arr::each($array, function (array $keys, $value) {
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  echo implode('.', $keys) . ': \t\t';
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  print_r($value);
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  // 1.2:    'a'
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  // 1.3:    'b'
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  // 1.4.5:  'c'
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  // test:   'd'
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}, Arr::EACH_KEYS_ARRAY_VALUE);
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Traversing array - Previous

Finding

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Mapping

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