How to combine multiple arrays with identical keys into a single array?

[robertamania]

I am new to php. I need some help.I had a array as \[code\]Array ( [_] => Array ( [0] => [1] => ) [123_] => Array ( [0] => 123 [1] => ) [1234_] => Array ( [0] => 1234 [1] => ) )Array ( [_] => Array ( [0] => [1] => ) [12345_] => Array ( [0] => 12345 [1] => ) [1234_] => Array ( [0] => 1234 [1] => ) )\[/code\]so..whats my problem is i want an array with all these keys and values as\[code\]Array ( [_] => Array ( [0] => [1] => ) [123_] => Array ( [0] => 123 [1] => ) [1234_] => Array ( [0] => 1234 [1] => ) [_] => Array ( [0] => [1] => ) [12345_] => Array ( [0] => 12345 [1] => ) [1234_] => Array ( [0] => 1234 [1] => ) )\[/code\]there would be duplicate keys and values.. but I want all of them as a array.. any help plz..