The only array operator in PHP is the + operator. It appends the right handed array
to the left handed, whereas duplicated keys are NOT
overwritten.
$a = array("a" = "apple", "b" = "banana"); $b = array("a" = "pear", "b" = "strawberry", "c" = "cherry"); $c = $a + $b; var_dump($c); |
array(3) { ["a"]= string(5) "apple" ["b"]= string(6) "banana" ["c"]= string(6) "cherry" } |