Three ways to reset arrays to consecutive numerical indexes in PHP

Three ways for PHP to reset an array to a continuous numeric index

For example, a PHP array like this:

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

Want to convert to an array like this:

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

1. Recommended method array_values ​​method

This method is applicable to both ordinary arrays and associative arrays

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

print_r(array_values($arr1));

Output result:

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

2. Use the array_merge method

If only one array is given and the array is numerically indexed, the key names will be re-indexed in a continuous manner. So it can only be applied to numeric index .

##

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

print_r(array_merge($arr1));

Output result:

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

3. The most primitive way of looping through

is bloated and not elegant enough, so I strongly resist it.

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

print_r(resetArr($arr1));

That’s it!

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