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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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