i have this file XML file.. I need to convert it form XMl to MYSQL. if it have only one array than i know how to do it.. now my question how to extract this two array

Each array will have different value of data..for example for first array, pmIntervalTxEthMaxUtilization data : 0,74,0,0,48 and

for second array pmIntervalRxPowerLevel data: -79,-68,-52 , pmIntervalTxPowerLevel data: 13,11,-55

. can some one help to guide how write php code to extract this xml file to MY SQL

    <mi>
        <mts>20130618020000</mts>
        <gp>900</gp>
        <mt>pmIntervalRxUndersizedFrames</mt>  [ this is first array]
        <mt>pmIntervalRxUnicastFrames</mt>
        <mt>pmIntervalTxUnicastFrames</mt>
        <mt>pmIntervalRxEthMaxUtilization</mt>
        <mt>pmIntervalTxEthMaxUtilization</mt>
        <mv>
            <moid>port:1:3:23-24</moid>
            <sf>FALSE</sf>
            <r>0</r>    [the data for 1st array i want to insert in DB]
            <r>0</r>
            <r>0</r>
            <r>5</r>
            <r>0</r>
        </mv>
    </mi>
    <mi>
        <mts>20130618020000</mts>            
        <gp>900</gp>
         <mt>pmIntervalRxSES</mt>            [this is second array]
        <mt>pmIntervalRxPowerLevel</mt>
        <mt>pmIntervalTxPowerLevel</mt>
        <mv>
            <moid>client:1:3:23-24</moid>
            <sf>FALSE</sf>
            <r>0</r>   [the data for 2nd array i want to insert in DB]
            <r>-79</r>
            <r>13</r>
        </mv>
    </mi>

this is the code for one array that i write..i dont know how to write code for two array because the field appear two times and have different data value for each array

                   // Loop through the specified xpath
        foreach($xml->mi->mv as $subchild)
        {
            $port_no = $subchild->moid;
            $rx_ses = $subchild->r[0];
            $rx_es = $subchild->r[1];
            $tx_power = $subchild->r[10];

            // dump into database;
            ...........................

i have do a little research on it this is the out come...

        $i = 0;

        while( $i < 5)
        {

            // Loop through the specified xpath
            foreach($xml->md->mi->mv as $subchild)
            {
            $port_no = $subchild->moid;
            $rx_uni = $subchild->r[10];
            $tx_uni = $subchild->r[11];
            $rx_eth = $subchild->r[16];
            $tx_eth = $subchild->r[17];

            // dump into database;
            ..............................
            $i++;
            if( $i == 5 )break;
            }
        }

        // Loop through the specified xpath
        foreach($xml->mi->mv as $subchild)
        {
            $port_no = $subchild->moid;
            $rx_ses = $subchild->r[0];
            $rx_es = $subchild->r[1];
            $tx_power = $subchild->r[10];

            // dump into database;
            .......................