What is ArrayHelper in yii2?

2.0. Source Code. https://github.com/yiisoft/yii2/blob/master/framework/helpers/ArrayHelper.php. ArrayHelper provides additional array functionality that you can use in your application. For more details and usage information on ArrayHelper, see the guide article on array helpers.

How to merge two arrays in yii2?

Merging Arrays You can use ArrayHelper::merge() to merge two or more arrays into one recursively. If each array has an element with the same string key value, the latter will overwrite the former (different from array_merge_recursive()).

How to use array in yii2?

$array= [ [‘id’ => ‘123’, ‘name’ => ‘abc’], [‘id’ => ‘124’, ‘name’ => ‘def’], ]; And then I want to use them using Yii 2 ArrayHelper::map(). $result = ArrayHelper::map($array, ‘id’, ‘name’);

What is a helper array?

The array helper provides several functions to simplify more complex usages of arrays. It is not intended to duplicate any of the existing functionality that PHP provides – unless it is to vastly simplify their usage.

How do you implode an array?

If we have an array of elements, we can use the implode() function to join them all to form one string. We basically join array elements with a string. Just like join() function , implode() function also returns a string formed from the elements of an array.

What does helper mean?

Definition of helper : one that helps especially : a relatively unskilled worker who assists a skilled worker usually by manual labor.

What’s the difference between implosion and explosion?

In an explosion (top), force radiates away from a source. With implosion (bottom), the object collapses upon itself (generally being crushed by an outside force).

What is a callback PHP?

A callback function (often referred to as just “callback”) is a function which is passed as an argument into another function. Any existing function can be used as a callback function.

What is PHP map function?

The map, or array_map method in PHP, is a higher-order function that applies a given callback to all elements of a collection. The return value is a collection in the same order.

Are there any real world examples of Yii \\ helpers?

PHP yii\\helpers ArrayHelper::toArray – 30 examples found. These are the top rated real world PHP examples of yii\\helpers\\ArrayHelper::toArray extracted from open source projects. You can rate examples to help us improve the quality of examples.

What to include in an array in Yii?

A field name to include as is. A key-value pair of desired array key name and model column name to take value from. A key-value pair of desired array key name and a callback which returns value. The result of conversion above for single model will be:

When to use recursive merging in Yii 2?

Recursive merging will be conducted if both arrays have an element of array type and are having the same key. For integer-keyed elements, the elements from the latter array will be appended to the former array.

How to merge two arrays into one in arrayhelper?

Encoding will use application charset and could be changed via third argument. You can use ArrayHelper::merge () to merge two or more arrays into one recursively. If each array has an element with the same string key value, the latter will overwrite the former (different from array_merge_recursive () ).