PHP で配列を連続した数値インデックスにリセットする 3 つの方法

$arr = array(
    1 => 'apple',
    3 => 'banana',
    5 => 'orange'
);

$arr = array(
    0 => 'apple',
    1 => 'banana',
    2 => 'orange'
);

 'jerry',
    'age' => 16,
    'height' => '18cm'
);

print_r(array_values($arr1));

[root@localhost php]# php array.php 
Array
(
    [0] => apple
    [1] => banana
    [2] => orange
)
Array
(
    [0] => jerry
    [1] => 16
    [2] => 18cm
)

 'jerry',
    'age' => 16,
    'height' => '18cm'
);

print_r(array_merge($arr1));

[root@localhost php]# php array.php 
Array
(
    [0] => apple
    [1] => banana
    [2] => orange
)
Array
(
    [name] => jerry
    [age] => 16
    [height] => 18cm
)

 'jerry',
    'age' => 16,
    'height' => '18cm'
);

print_r(resetArr($arr1));