php adds a column after the array

In PHP, to add a column after an array, we can use the array_push() function or direct assignment.

Let’s introduce these two methods below.

Method 1: Use array_push() function

array_push() function can add one or more elements to the end of the array. We can use this function to add a column after the array.

The specific implementation method is as follows:

<?php
// 定义一个数组
$oldArr = array(
    array('name'=>'Tom', 'age'=>20, 'gender'=>'male'),
    array('name'=>'Lucy', 'age'=>21, 'gender'=>'female'),
    array('name'=>'Jack', 'age'=>22, 'gender'=>'male')
);
 
// 定义需要增加的一列数据
$new = 'address';
 
// 遍历数组，将新数据添加到数组中
foreach($oldArr as &$value) {
    $value[$new] = '';
}
 
// 输出结果
print_r($oldArr);
?>

Output result:

Array
(
    [0] => Array
        (
            [name] => Tom
            [age] => 20
            [gender] => male
            [address] => 
        )
 
    [1] => Array
        (
            [name] => Lucy
            [age] => 21
            [gender] => female
            [address] => 
        )
 
    [2] => Array
        (
            [name] => Jack
            [age] => 22
            [gender] => male
            [address] => 
        )
)

From the output result, we can see that we successfully added a column after the array.

Method 2: Direct assignment

Using direct assignment, you can also add a column after the array.

The implementation method is as follows:

<?php
// 定义一个数组
$oldArr = array(
    array('name'=>'Tom', 'age'=>20, 'gender'=>'male'),
    array('name'=>'Lucy', 'age'=>21, 'gender'=>'female'),
    array('name'=>'Jack', 'age'=>22, 'gender'=>'male')
);
 
// 遍历数组，为每个元素赋值
foreach($oldArr as &$value) {
    $value['address'] = '';
}
 
// 输出结果
print_r($oldArr);
?>

The output result is also:

Array
(
    [0] => Array
        (
            [name] => Tom
            [age] => 20
            [gender] => male
            [address] => 
        )
 
    [1] => Array
        (
            [name] => Lucy
            [age] => 21
            [gender] => female
            [address] => 
        )
 
    [2] => Array
        (
            [name] => Jack
            [age] => 22
            [gender] => male
            [address] => 
        )
)

Through the above two methods, we can add a column after the PHP array and implement the array Data integrity and compliance controls.

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