在 foreach PHP 中处理重复计算

Question

我有机会在我的代码中处理 foreach 中的重复计算 陈述。关键是如何进行递归？

在这段代码中我总是使用相同的代码，当有“HSPK”时，计算将有相同的方法（foreach），对于这个例子，我在“第五次计算”中推荐。

function sum_hspk($hspk_uraian_ssh_hspk_kode) {


        $ssh_total = 0;

        $ssh_total_2 = 0;

        $ssh_total_3 = 0;

        $harga_analisa_hspk = 0;

        $harga_analisa_satuan = 0;


        $hspk_reference = json_decode(get_hspk_reference_uraian_by_hspk_uraian_hspk_kode($hspk_uraian_ssh_hspk_kode));

        $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($hspk_reference->hspk_kegiatan_kode));


        foreach($hspk_uraian as $row) { // first foreach


            $hspk_uraian_koefisien = $row->hspk_uraian_koefisien;


            if($row->hspk_uraian_ssh_hspk_sumber == "SSH") { // first if

                $hspk_uraian_koefisien_ssh = $hspk_uraian_koefisien;

                $ssh = json_decode(get_ssh_detail_by_kode($row->hspk_uraian_ssh_hspk_kode));

                $ssh_total += ($ssh->ssh_uraian_harga * $hspk_uraian_koefisien_ssh);

            } elseif($row->hspk_uraian_ssh_hspk_sumber == "HSPK") {


                $hspk_uraian_koefisien_hspk_2 = $hspk_uraian_koefisien;

                $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($row->hspk_uraian_ssh_hspk_kode));


                foreach($hspk_uraian as $row) { // second foreach


                    $hspk_uraian_koefisien = $row->hspk_uraian_koefisien;

                    if($row->hspk_uraian_ssh_hspk_sumber == "SSH") { // second if

                        $hspk_uraian_koefisien_ssh = $hspk_uraian_koefisien;

                        $ssh = json_decode(get_ssh_detail_by_kode($row->hspk_uraian_ssh_hspk_kode));

                        $ssh_total_2 += ($ssh->ssh_uraian_harga * $hspk_uraian_koefisien_ssh);


                    }elseif($row->hspk_uraian_ssh_hspk_sumber == "HSPK") {


                        $hspk_uraian_koefisien_hspk_3 = $hspk_uraian_koefisien;

                        $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($row->hspk_uraian_ssh_hspk_kode));


                        foreach($hspk_uraian as $row) { // third foreach


                            $hspk_uraian_koefisien = $row->hspk_uraian_koefisien;

                            if($row->hspk_uraian_ssh_hspk_sumber == "SSH") {

                                $hspk_uraian_koefisien_ssh = $hspk_uraian_koefisien;

                                $ssh = json_decode(get_ssh_detail_by_kode($row->hspk_uraian_ssh_hspk_kode));

                                $ssh_total_3 += ($ssh->ssh_uraian_harga * $hspk_uraian_koefisien_ssh);


                            }else if($row->hspk_uraian_ssh_hspk_sumber == "HSPK") {

                                $hspk_uraian_koefisien_hspk_4 = $hspk_uraian_koefisien;

                                $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($row->hspk_uraian_ssh_hspk_kode));


                                foreach ($hspk_uraian as $row) { // fourth foreach


                                    $hspk_uraian_koefisien = $row->hspk_uraian_koefisien;

                                    if($row->hspk_uraian_ssh_hspk_sumber == "SSH") {

                                        $hspk_uraian_koefisien_ssh = $hspk_uraian_koefisien;

                                        $ssh = json_decode(get_ssh_detail_by_kode($row->hspk_uraian_ssh_hspk_kode));

                                        $ssh_total_4 += ($ssh->ssh_uraian_harga * $hspk_uraian_koefisien_ssh);

                                    }elseif($row->hspk_uraian_ssh_hspk_sumber == "HSPK") {

                                        // fifth handling

                                    } // end fourth if


                                } // end fourth foreach

                                $harga_analisa_satuan = ((($ssh_total_4) * 0.15) + ($ssh_total_4));

                                $harga_analisa_hspk = ($harga_analisa_satuan * $hspk_uraian_koefisien_hspk_3);

                                $ssh_total_3 += $harga_analisa_hspk;


                            } // end third if


                        } // end third foreach

                        $harga_analisa_satuan = ((($ssh_total_3) * 0.15) + ($ssh_total_3));

                        $harga_analisa_hspk = ($harga_analisa_satuan * $hspk_uraian_koefisien_hspk_3);

                        $ssh_total_2 += $harga_analisa_hspk;


                    }; // end second if


                } // end second foreach


                $harga_analisa_satuan = ((($ssh_total_2) * 0.15) + ($ssh_total_2));

                $harga_analisa_hspk = ($harga_analisa_satuan * $hspk_uraian_koefisien_hspk_2);

                $ssh_total += $harga_analisa_hspk;

            } // end first if



        } // end first foreach


        $harga_analisa_hspk = ((($ssh_total) * 0.15) + ($ssh_total));

        return $harga_analisa_hspk;


    } // end function

执行该函数的示例：

$test = sum_hspk('01.04');
echo $test;

Answer 1

要创建递归函数，您需要考虑基本情况是什么，以及您希望从函数中获得什么 (ssh_total)。在这种情况下，sum_hspk 从“SSH”和“HSPK”计算 ssh_total。 “SSH”是您的基本情况，您可以直接计算值。但是对于“HSPK”，它依赖于“SSH”和“HSPK”，因此，您需要进行自上而下的方法，直到找到基本情况“SSH”。您需要在“HSPK”条件下调用 sum_hspk。

您应该进行此更改以进行递归。

function get_ssh_total($row) {

    $ssh_total = 0;

    $hspk_uraian_koefisien = $row->hspk_uraian_koefisien;

    if ($row->hspk_uraian_ssh_hspk_sumber == "SSH") {

        $hspk_uraian_koefisien_ssh = $hspk_uraian_koefisien;

        $ssh = json_decode(get_ssh_detail_by_kode($row->hspk_uraian_ssh_hspk_kode));

        $ssh_total = ($ssh->ssh_uraian_harga * $hspk_uraian_koefisien_ssh);

    }
    else if ($row->hspk_uraian_ssh_hspk_sumber == "HSPK") {

        $hspk_uraian_koefisien_hspk_2 = $hspk_uraian_koefisien;

        $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($row->hspk_uraian_ssh_hspk_kode));

        foreach($hspk_uraian as $row) {

            $ssh_total_2 += get_ssh_total($row);

        }

        $harga_analisa_satuan = ((($ssh_total_2) * 0.15) + ($ssh_total_2));

        $harga_analisa_hspk = ($harga_analisa_satuan * $hspk_uraian_koefisien_hspk_2);

        $ssh_total += $harga_analisa_hspk;

    }

    return $ssh_total;

}

function sum_hspk($hspk_uraian_ssh_hspk_kode) {


    $ssh_total = 0;

    $ssh_total_2 = 0;

    $ssh_total_3 = 0;

    $harga_analisa_hspk = 0;

    $harga_analisa_satuan = 0;


    $hspk_reference = json_decode(get_hspk_reference_uraian_by_hspk_uraian_hspk_kode($hspk_uraian_ssh_hspk_kode));

    $hspk_uraian = json_decode(get_hspk_uraian_by_kegiatan($hspk_reference->hspk_kegiatan_kode));


    foreach($hspk_uraian as $row) { // first foreach

        $ssh_total += get_ssh_total($row);

    } // end first foreach


    $harga_analisa_hspk = ((($ssh_total) * 0.15) + ($ssh_total));

    return $harga_analisa_hspk;


} // end function