如何将数组值爆炸并更改为键？

I am having an array like this.

Array
(
    [0] => Array
        (
            [0] => a~226
            [1] => a~228
        )

    [1] => Array
        (
            [0] => b~123
            [1] => b~209
        )

    [2] => Array
        (
            [0] => c~161
            [1] => c~140
        )

)

I want to explode this array using ~ symbol and i want value to be a key in php array.i want an array like this.Kindly help me write the code.

Array
(
    [0] => Array
        (
            [a] => 226
            [a] => 228
        )

    [1] => Array
        (
            [b] => 123
            [b] => 209
        )

    [2] => Array
        (
            [c] => 161
            [c] => 140
        )

)

Thanks in advance...

try this

$arr_new  = array();
foreach($arr_main as $key=>$arr)
{
    foreach($arr as $k=>$val)
    {
        $str = explode("~",$val);
        $arr_new[$key][$str[0].$k]=$str[1];
    }
}

will maintain the index as a0, a1

You cannot have such an array. The keys must be unique (Like Mark Baker say).

You can have something like this:

Array
(
    [a] => Array
        (
            [0] => 226
            [1] => 228
        )

    [b] => Array
        (
            [0] => 123
            [1] => 209
        )

    [c] => Array
        (
            [0] => 161
            [1] => 140
        )

)

The code to do this:

$array = array(
    array("a~226", "a~228"), 
    array("b~123", "b~209"), 
    array("c~161", "c~140")
);

$result = array();

foreach($array as $inner_array) {
    foreach($inner_array as $value) {
        $spitted = explode("~", $value);
        $result[$spitted[0]][] = end($spitted);
    }

}

An working example: http://codepad.viper-7.com/znhhqB