PHP array_merge_recursive() Function

PHP array_merge_recursive() Function

The array_merge_recursive() function  in PHP merges the elements of one or arrays together and returns the resulting array.

Syntax

array_merge_recursive (array $array  , [ array $... ] )

Parameter

array(required)- This parameter specifies the input array

….(optional)- It represents more arrays to merge with.

Return

This function returns a resulting array merging the elements of one or arrays together or returns an empty array of no arguments are passed.

Example 1

Output

Array 1: Array
 (
     [0] => Watermelon
     [1] => Dates
     [2] => Blueberry
     [3] => Orange
 ) 
 Array 2: Array
 (
     [0] => Peas
     [1] => Bottle guard
     [2] => Capsicum
     [3] => Cabbage 
 ) 
 Merged Array: Array
 (
     [0] => Watermelon
     [1] => Dates
     [2] => Blueberry 
     [3] => Orange
     [4] => Peas
     [5] => Bottle guard
     [6] => Capsicum
     [7] => Cabbage
 ) 

Example 2

 array("Name" => "Reema"), 5);
 // initializing array2
 $array2 = array(10, "Student" => array("Name" => "Rakesh", "Mukesh"));
 // merging array1 and array2
 $result_array = array_merge_recursive($array1, $array2); 
 print_r($result_array);
 ?> 

Output

Array
 (
     [Student] => Array
         (
             [Name] => Array
                 (
                     [0] => Reema
                     [1] => Rakesh
                 ) 
             [0] => Mukesh
         )
     [0] => 5
     [1] => 10
 ) 

Example 3

Output

Array
 (
     [0] => 
     [1] => 
 ) 

Example 4

"Earth", 2=>"Neptune", 3=>"Saturn");
 print_r($array1);
 echo("\nArray 2: ");
 //initializing the input array2 
 $array2 = array(1=>"Asia", 2=>"Antarctica", 3=>"Europe", 4=>"Africa");
 print_r($array2);
 echo("\nArray 3: ");
 //initializing the input array3
 $array3 = array(1=>"India", 2=>"UK", 3=>"Canada", 4=>"Botswana");
 print_r($array3); 
 //merging array1, array2 and array3
 $result_aaray = array_merge_recursive($array1, $array2,$array3);
 echo("\nMerged Array: ");
 print_r($result_aaray);
 ?> 

Output

Array 1: Array
 (
     [1] => Earth
     [2] => Neptune
     [3] => Saturn
 )
 Array 2: Array 
 (
     [1] => Asia
     [2] => Antarctica
     [3] => Europe
     [4] => Africa
 ) 
 Array 3: Array
 (
     [1] => India
     [2] => UK 
     [3] => Canada
     [4] => Botswana
 )
 Merged Array: Array
 ( 
     [0] => Earth
     [1] => Neptune
     [2] => Saturn
     [3] => Asia
     [4] => Antarctica
     [5] => Europe
     [6] => Africa
     [7] => India 
     [8] => UK
     [9] => Canada
     [10] => Botswana