How to modify the key value of a subarray in a php array

How to modify the key value of a subarray in a php array: Use the function [array_slice()] to take out a value in the array according to the conditions and return it. The syntax is [array_slice(array,offset,length,preserve)] .

How to modify the key value of a sub-array in a php array:

Definition and usage

The array_slice() function removes a segment of value from the array based on conditions and returns it.

Note: If the array has string keys, the returned array will retain the key names.

Syntax

array_slice(array,offset,length,preserve)

Example 1

<?php
$a=array(0=>"Dog",1=>"Cat",2=>"Horse",3=>"Bird");
print_r(array_slice($a,1,2));
?>

Output:

Array
( [0] => Cat [1] => Horse )

The specific implementation is as follows:

Reference examples, complete writing:

$ar = array(
array(1 => 'a', 2 => 50, 3 => 60, 4 => 'long', 5 => 'zzz', 6 => 'kkk', 7 => 'ooo'),
array(1 => 'b', 2 => 60, 3 => 70, 4 => 'king', 5 => 'lll', 6 => 'ttt', 7 => 'ppp'),
array(1 => 'c', 2 => 70, 3 => 80, 4 => 'quit', 5 => 'qqq', 6 => 'xxx', 7 => 'ccc'),
);
$kname = array('StaffId', 'Wage', 'Name', 'Work', 'Type');
function foo(&$v, $k, $kname) {
$v = array_combine($kname, array_slice($v, 1, -1));
}
array_walk($ar, 'foo', $kname);
print_r($ar);
Array
(
[0] => Array
(
[StaffId] => 50
[Wage] => 60
[Name] => long
[Work] => zzz
[Type] => kkk
)
[1] => Array
(
[StaffId] => 60
[Wage] => 70
[Name] => king
[Work] => lll
[Type] => ttt
)
[2] => Array
(
[StaffId] => 70
[Wage] => 80
[Name] => quit
[Work] => qqq
[Type] => xxx
)
)

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