Can php reset the key name of an array?

php can reset the key name of the array. In PHP, you can use the array_values() function to reset the key name of the array. The function of this function is to return the values ​​of all elements in the array. It can reset the key name to a numerical key starting from 0 and increasing by 1. Syntax "array_values($array)".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

In PHP, you can use array_values () function to reset the key name of the array.

array_values($array)

• The parameter $array is the array being operated on.

array_values() function is to return the values ​​of all elements in the array. It is very simple to use. With only one required parameter, you can return an array containing all the values ​​in the given array. Array, but does not retain key names. The returned array will be in the form of an indexed array, with array indices starting at 0 and increasing by 1.

Simply put, array_values() will convert the specified array into an index array, and the key name of the array will be reset, starting from 0 and increasing by 1.

Example:

<?php
$arr1=array("Peter"=>65,"Harry"=>80,"John"=>78,"Clark"=>90);
var_dump($arr1);
var_dump(array_values($arr1));

$arr2=array(2=>65,8=>80,5=>78,0=>90);
var_dump($arr2);
var_dump(array_values($arr2));
?>

Description:

array_values() function is particularly suitable for confusing element subscripts in arrays Array, or used to convert an associative array into an indexed array.

But the array_values() function only applies to one-dimensional arrays and has no effect on dimensions other than the first dimension in multi-dimensional arrays.

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