How to add elements to a two-dimensional array in php

In PHP, you can add the same field elements to all arrays through the "array_walk()" function. The code implementation statement is such as "array_walk($list, function (&$value, $key, $arr) {. ..}".

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

php How to add a two-dimensional array Element? PHP two-dimensional array append field to all arrays

Function

In two-dimensional array, you need to add the same field to all arrays

array_walk() function to the array Apply a user-defined function to each element of the function. In the function, the key name and key value of the array are parameters.

array_walk(array,myfunction,parameter...)

Parameters	Description
array	Required. Specifies the array.
myfunction	Required. The name of the user-defined function.
parameter, ...	Optional. Specifies the parameters of the user-defined function. You can set one or more parameters for the function.

Code

$arr = ['age' => 11];
        $list = array(
            ['id'=>1,'name'=>'aaa'],
            ['id'=>2,'name'=>'bbb'],
            ['id'=>3,'name'=>'ccc']
        );

        array_walk($list, function (&$value, $key, $arr) {
            $value = array_merge($value, $arr);
        },$arr);

        var_dump($list);

Output

array(3) {
[0]=>
array(3) {
["id"]=>
int(1)
["name"]=>
string(3) "aaa"
["age"]=>
int(11)
}
[1]=>
array(3) {
["id"]=>
int(2)
["name"]=>
string(3) "bbb"
["age"]=>
int(11)
}
[2]=>
array(3) {
["id"]=>
int(3)
["name"]=>
string(3) "ccc"
["age"]=>
int(11)
}
}

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