为什么在下一次迭代中不会更改临时指定值

Question

I am facing some weird issue with the following code:

for($i=0;$i<count($job1);$i++){
    for($j=0;$j<count($jobidcomm);$j++){
        if(!$jobidcomm->isEmpty() && $job1[$i]->job_pos_id==$jobidcomm[$j]->job_id){
            $job[$i]=$job1[$i]; 
            break;
        } 
        else if (!$recruiter==null)
        {
            if(!$job1[$i]->commission_percentage==null){
                $newamt=(($job1[$i]->min_sal*$job1[$i]->commission_percentage)/100)*($recruiter/100);
            }
            else{
                $newamt=($job1[$i]->commission_flat_amt)*($recruiter/100);
            }
            $job1[$i]->commissionHalfAmt=$newamt; //here is i m having problem(this is temprory assign data)
            $job[$i]=$job1[$i]; 
        }
    }
}

suppose at j=0 it executes $recruiter condition where I assign a temp value but when j becomes 1 (i.e j=1), then it goes inside this

if(!$jobidcomm->isEmpty() && $job1[$i]->job_pos_id==$jobidcomm[$j]->job_id)

above condition, in this condition I want to reset job1 as it originally was(like before without temp assigned data)

Answer 1

Save the old value in a variable before the inner loop.

for($i=0;$i<count($job1);$i++){
    $saveCommission = $job1[$i]->commissionHalfAmt;
    for($j=0;$j<count($jobidcomm);$j++){
        if(!$jobidcomm->isEmpty() && $job1[$i]->job_pos_id==$jobidcomm[$j]->job_id){
            $job[$i]=$job1[$i]; 
            break;
        } 
        else if (!$recruiter==null)
        {
            if(!$job1[$i]->commission_percentage==null){
                $newamt=(($job1[$i]->min_sal*$job1[$i]->commission_percentage)/100)*($recruiter/100);
            }
            else{
                $newamt=($job1[$i]->commission_flat_amt)*($recruiter/100);
            }
            $job1[$i]->commissionHalfAmt=$newamt; //here is i m having problem(this is temprory assign data)
            $job[$i]=$job1[$i]; 
        }
    }
    $job1[$i]->commissionHalfAmt = $saveCommission;
}

BTW, you should learn to use foreach() when looping over array elements.