在PHP中处理多种类型的数组

Question

I have multiple dynamic text boxes.

<input type="text" name="Paid_Amount[]">
<input type="text" name="Charges_Type[]">

Each text box value have multiple rows (installments) in database. Paid Amount should be divided according to number of installments. for example i have development charges = 50,000 and then installments if development charges

Installment table
---------------------------------------------------------------
ID   Charges_Type             Installment_Amount    Paid_Amout      
---------------------------------------------------------------
1    Land Cost                10000                   0                
2    Land Cost                10000                   0            
3    Land Cost                10000                   0             
4    Land Cost                10000                   0          
5    Land Cost                10000                   0
6    Development Charges      5000                    0
7    Development Charges      5000                    0

I need to set Paid amount (getting from <form> ) to installment table's paid amount

the requirement is: if i set 12,000 in land cost then 10000 should be set in first installment and remaining 2000 will be set in next installment

i have tried with foreach and do while loop but getting confused with multiple arrays:

$Charges_Type = $this->input->post('Charges_Type'); // array
$Paid_Amount = $this->input->post('Paid_Amount'); // array
$result = array of rows from installment table

how to handle these 3 arrays :

$merge = array_merge($Paid_Amount, $result);
    foreach ($merge as $key => $value)
                    {
                        if(!empty($merge[$key]))
                        {
                            foreach($result as $in)
                            {
                                if($in['Charges_Type'] == $key)
                                {
                                    $i = 0;
                                    do 
                                    {
                                        if($in['Installment_Amount'] >= $value && $in['Paid_Amount'] == 0 && $in['Charges_Type'] == $key)
                                        {
                                            echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$value."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." AND `Charges_Type` = '".$key."''";
                                            $value = $value - $in['Installment_Amount'];
                                        }
                                        if($in['Installment_Amount'] < $value && $in['Charges_Type'] == $key)
                                        {
                                            echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$in['Installment_Amount']."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." AND `Charges_Type` = '".$key."''";
                                            $value = $value - $in['Installment_Amount'];                        
                                        }
                                        if($i['Paid_Amount'] != 0 && $in['Charges_Type'] == $key)
                                        {
                                            $value = $value + $i['Paid_Amount'];
                                            echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$value."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." '";
                                            $value = 0;
                                        }   
                                        $i++;
                                    } 
                                    while ($value > 0);
                                }
                            }
                        }       
                    }

Answer 1

I haven't provided an answer to your question, but an alternative way of writing your code to make it easier to read by refactoring it. That makes it easier when working with multiple array loops.

I noticed in your table, Installment table, you have a misspelling, Paid_Amout, I'm not sure if that's just a misspelling when you posted it or if it's an error in your SQL. But that could lead to issues.

$merge = array_merge($Paid_Amount, $result);
foreach ($merge as $key => $value)
{
    if(empty($merge[$key]))
        continue;

    foreach($result as $in)
    {
        if($in['Charges_Type'] != $key)
            continue;

        $i = 0;
        do 
        {
            if($in['Installment_Amount'] >= $value && $in['Paid_Amount'] == 0 && $in['Charges_Type'] == $key)
            {
                echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$value."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." AND `Charges_Type` = '".$key."''";
                $value = $value - $in['Installment_Amount'];
            }
            if($in['Installment_Amount'] < $value && $in['Charges_Type'] == $key)
            {
                echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$in['Installment_Amount']."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." AND `Charges_Type` = '".$key."''";
                $value = $value - $in['Installment_Amount'];                        
            }
            if($i['Paid_Amount'] != 0 && $in['Charges_Type'] == $key)
            {
                $value = $value + $i['Paid_Amount'];
                echo "UPDATE `tbl_installment` SET `Paid_Amount` = '".$value."', `Paid_Date` = '".$Paid_Date."', `Is_Paid` = '1' WHERE `ID` = '".$in['ID']." '";
                $value = 0;
            }   
            $i++;
        } while ($value > 0);
    }
}