A simple way to merge arrays using the plus sign in PHP

Source: Internet
Author: User
Generally, we use the array_merge () function to merge multiple arrays. In fact, the introduction to array operators in the PHP Manual gives us a simpler method, that is, & quot; + & quot; number. let's take a look at the following example to understand the code:

The code is as follows:


$ A = array ('a' => 'A', 'B' => 'B ');
$ B = array ('C' => 'C', 'D' => 'D ');
$ C = $ a + $ B;
Print ('

');
Print_r ($ c );
Print ('
');
?>


Result:

The code is as follows:


Array
(
[A] =>
[B] => B
[C] => c
[D] => d
)


Note: There is a difference between the plus sign and the array_merge () function, that is, when the plus sign is used to merge an array, if there is a key with the same name between the arrays, the corresponding key value of the preceding array is retained, the array_merge () function is the opposite.

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