Problem: How to merge two arrays while keeping keys instead of reindexing in PHP?
Solution: This can be achieved in two ways which are by using + operator and by using inbuilt functions.
Method 1: Using + operator.
Example :
<?php $array1 = array( 1 =>'Geeks', 2 =>'For', 3 =>'Geeks' ); $array2 = array( 4 => 'A', 5 => 'Computer', 6 => 'Science', 7 => 'Portal', 8 => 'For', 9 => 'Geeks' ); $merged_array = $array1 + $array2; var_dump ($merged_array); ?> |
Output:
array(9) {
[1]=>
string(5) "Geeks"
[2]=>
string(3) "For"
[3]=>
string(5) "Geeks"
[4]=>
string(1) "A"
[5]=>
string(8) "Computer"
[6]=>
string(7) "Science"
[7]=>
string(6) "Portal"
[8]=>
string(3) "For"
[9]=>
string(5) "Geeks"
}
Method 2: Using inbuilt function array_replace() function.
Example :
<?php $array1 = array( 1 =>'Geeks', 2 =>'For', 3 =>'Geeks' ); $array2 = array( 4 => 'A', 5 => 'Computer', 6 => 'Science', 7 => 'Portal', 8 => 'For', 9 => 'Geeks' ); $merged_array = array_replace($array1, $array2); var_dump ($merged_array); ?> |
Output:
array(9) {
[1]=>
string(5) "Geeks"
[2]=>
string(3) "For"
[3]=>
string(5) "Geeks"
[4]=>
string(1) "A"
[5]=>
string(8) "Computer"
[6]=>
string(7) "Science"
[7]=>
string(6) "Portal"
[8]=>
string(3) "For"
[9]=>
string(5) "Geeks"
}
Reference :http://php.net/manual/en/function.array-replace.php
