How to combine two-dimensional numbers in php without changing the key value

In PHP, you can use the array_merge_recursive() function to merge two-dimensional arrays without changing the key values; this function will not handle the situation where two or more array elements have the same key name. Instead of key name overwriting, multiple values ​​with the same key name are recursively formed into an array.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the array_merge_recursive() function To merge two-dimensional arrays without changing key values.

array_merge_recursive() function is used to merge one or more arrays into one array.

The difference between this function and the array_merge() function is that it handles the situation where two or more array elements have the same key name. array_merge_recursive() does not perform key name overwriting, but recursively combines multiple values ​​with the same key name into an array.

Example: Merge two-dimensional arrays without changing key values

<?php
header("Content-type:text/html;charset=utf-8");
$array1 = array(
    array("张三",25,"男"),
    array("李四",21,"男"),
    array("王五",22,"男"),
	  array("娜娜",22,"女"),
	  "PHP中文网"
);
$array2 = array(
    array("小红",25,"女"),
    array("李四",21,"女"),
    array("娜娜",22,"女"),
    "PHP中文网"
);
$array3 = array_merge_recursive($array1,$array2);
var_dump($array3);
?>

Output:

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