如何成功输入'if'条件后如何转到'else if'循环

Is there any way to go to the else if body after the if condition is sucessfully entered? Is there any way to go to the else if body after the if condition is sucessfully entered?

    if ($axisX == $axisXOne) {   /* Main IF Statement */
            if($axisY =='0' && $axisYOne == '1') { $second = '2';}
        else if($axisY =='0' && $axisYOne == '2') { $second = '1';}
        else if($axisY =='1' && $axisYOne == '0') { $second = '2';}
        else if($axisY =='1' && $axisYOne == '2') { $second = '0';}
        else if($axisY =='2' && $axisYOne == '0') { $second = '1';}
        else if($axisY =='2' && $axisYOne == '1') { $second = '0';}

            if (($_POST['button'.$axisX.$second] == null) && ($curVal != $axisX.$second)){ /* Inner IF Statement */
             echo $axisX.$second; 
             }
    }   
    else if ($axisY == $axisYOne) {  /* Main ELSE IF statement */
        if($axisX =='0' && $axisXOne == '1') { $second = '2';}
        else if($axisX =='0' && $axisXOne == '2') { $second = '1';}
        else if($axisX =='1' && $axisXOne == '0') { $second = '2';}
        else if($axisX =='1' && $axisXOne == '2') { $second = '0';}
        else if($axisX =='2' && $axisXOne == '0') { $second = '1';}
        else if($axisX =='2' && $axisXOne == '1') { $second = '0';}
            if($_POST['button'.$second.$axisY] == null) {/* Inner IF Statement */
              echo $second.$axisY;
             }
    }
    else if ($xAxis == $yAxis && $xAxisOne == $yAxisOne) {  /* other Main ELSE IF Statement*/
            if($comVal[0] == '00' && $comVal[1] == '11') { $diagon = '22';}
        else if($comVal[0] == '00' && $comVal[1] == '22') { $diagon = '11';}
        else if($comVal[0] == '11' && $comVal[1] == '00') { $diagon = '22';}
        else if($comVal[0] == '11' && $comVal[1] == '22') { $diagon = '00';}
        else if($comVal[0] == '22' && $comVal[1] == '00') { $diagon = '11';}
        else if($comVal[0] == '22' && $comVal[1] == '11') { $diagon = '00';}
            if($_POST['button'.$diagon] == null) {
            echo $diagon;
            }
    }

If Main IF Statement evaluates true and Inner IF Statement evalautes false then go to Main ELSE IF ladder. If Main IF Statement evaluates true and Inner IF Statement evalautes true then stop loop . If Main IF Statement evaluates false, directly go to Main ELSE IF Statement

If Main ELSE IF Statement evaluates true and Inner IF Statement evalautes false then go to Main ELSE IF ladder. If Main ElSE IF Statement evaluates true and Inner IF Statement evalautes true ,then stop loop .If Main ELSE IF Statement evaluates false, directly go to other Main ELSE IF Statements

Try this:

$success = true;

if($a == $Xaxis && $b == $yaxis) {
    $zAxis    = $Xaxis + $yaxis;
    $success  = $Xaxis != $zAxis;
}
if( ($b == $Xaxis && $a == $yaxis) || !$success) {
    // do stuff here
}

Or something along those lines.