合并没有键的动态数组

Question

I have two arrays:

$array1 = ['label' => 'FirstButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']];
$array2 = ['label' => 'SecondButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']];

What I want to do, is to merge these arrays like this:

$array3 = [$array1, array2];

So example result whould be like this:

$array3 = [
    ['label' => 'FirstButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']], 
    ['label' => 'SecondButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']]
];

How can I do that? I'm using Yii2 framework, and bootstrap widget ButtonGroup. ButtonGroup widget example:

<?php
    echo ButtonGroup::widget([
            'buttons' => [
                ['label' => 'FirstButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']],
                ['label' => 'SecondButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']]
            ],
            'options' => ['class' => 'float-right']
        ]);
?>

The reason I need to merge these arrays like this is because my ButtonGroup is dynamic, and in view file I want to use variable from controller $buttonGroup:

<?php
    echo ButtonGroup::widget([
            'buttons' => [$buttonGroup],
            'options' => ['class' => 'float-right']
        ]);
?>

Update In controller I have this:

$buttonGroups = [];
foreach($client as $key => $value) {
    $buttonGroups[] = ['label' => $client[$key], 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']];
}

where $client[$key] is the name of the button. So my arrays are dynamic and I can't just merge arrays like this:

$array3 = array($array1, $array2);

Answer 1

did you try:

$array3 = array( $array1, $array2 );

and then :

 echo ButtonGroup::widget([
            'buttons' => $array3,
            'options' => ['class' => 'float-right']
        ]);

Update:

[
    ['label' => 'FirstButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']],
    ['label' => 'SecondButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']]
]

is simply another definition style of (since PHP5.4):

As of PHP 5.4 you can also use the short array syntax, which replaces array() with [].

Source: http://php.net/manual/en/language.types.array.php

array(
    array('label' => 'FirstButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button']),
    array('label' => 'SecondButton', 'options' => ['class' => 'btn btn-sm btn-default', 'type' => 'button'])
)

so you should be able to use directly:

<?php
    echo ButtonGroup::widget([
            'buttons' => $buttonGroups,
            'options' => ['class' => 'float-right']
        ]);
?>