Benim dizi bu gibi görünüyor:

[sx1] => Array
        (
            [sx1] => Pain in Hand
            [sx1L] => Location
            [sx1O] => Other Treat
            [sx1T] => Type
            [sx1R] => Radiation
            [sx1A] => Aggrivate Ease
            [sx1D] => Duration
            [sx1I] => Irit
            [sx1P] => Previous Hx
            [SX1T_1] => CX
            [SX1T_2] => Shld
            [SX1T_3] => Trnk
            [SX1T_4] => Hip
            [SX1T_5] => 
        )

I need to be able to search the array by a key, and then return the index of the matched item. For example, I need to search the array for the key "SX1T_1" and then return the index of that item in the array.

Herhangi bir yardım için teşekkür ederiz.