How to splice two array fields in php

In PHP, you can use the array_merge() function to splice the fields of two arrays. However, in this case, if two arrays have the same key name, the values ​​in the latter array will overwrite the values ​​in the previous array.

If you need to join two arrays with the same key names together, you can use the array_replace() function. This function overwrites the values ​​in the previous array with the values ​​in the later array.

The following is a sample code that demonstrates how to use the array_merge() and array_replace() functions to splice the fields of two arrays.

// 示例数据
$firstArray = array(
    "name" => "John",
    "age" => 25,
    "gender" => "Male"
);

$secondArray = array(
    "name" => "Jane",
    "profession" => "Teacher"
);

// 使用 array_merge() 函数拼接数组
$mergedArray = array_merge($firstArray, $secondArray);

// 输出拼接后的数组
print_r($mergedArray);

// 使用 array_replace() 函数拼接数组
$replacedArray = array_replace($firstArray, $secondArray);

// 输出拼接后的数组
print_r($replacedArray);

Run the above code, you will get the following output:

// array_merge() 函数拼接后的数组
Array
(
    [name] => Jane
    [age] => 25
    [gender] => Male
    [profession] => Teacher
)

// array_replace() 函数拼接后的数组
Array
(
    [name] => Jane
    [age] => 25
    [gender] => Male
    [profession] => Teacher
)

As you can see from the output, the array_merge() function merges the fields of the two arrays and creates a new array. However, it also overwrites values ​​with the same key names in the original array.

In contrast, the array_replace() function also splices the fields of the two arrays, but it uses the values ​​in the latter array to overwrite the values ​​with the same key names in the previous array.

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