Question

我正在尝试使用set @thisdate = ( select te_date from ( select row_number() over (partition by te_system_ref order by (select 0)) as rownumber, te_date from ticket_events where te_system_ref in (select sl_system_ref from statutory_letter where sl_letter_batch = 9429)and te_event = 'Copy of NtO produced' ) t where rownumber = 1 );将php“ if”重复20次。我该怎么办？

dh_c_01_01

最多20次

Answer 1

我不确定我是否正确理解了您的问题，或者不确定我知道您的变量是什么或变量的值是什么。

根据您的问题，本示例使用了额外的变量for loops和动态变量。它还假定您的每个dynamic variables存在：

<?php
$dh_c_limit = 20; // <-- loop limit
$a_c_a_limit = 9; // <-- loop limit
$a_b_s_addition = 5; // <-- based on your question
$a_c_a_max = 0; // <-- change this to whatever '$a_c_a_max' should be!

for ($dh_i = 1; $dh_i <= $dh_c_limit; $dh_i++) {    
    if(${"dh_c_".str_pad($dh_i,2,"0",STR_PAD_LEFT)."_01"}['id'] == $a_c_a_max){ // <-- checks against '$a_c_a_max'
        ${"dh_sq_".str_pad($dh_i,2,"0",STR_PAD_LEFT)."_01"} = ${"a_b_s_".str_pad($a_c_i,2,"0",STR_PAD_LEFT)}; // <-- set the '$dh_sq_' variable to '$a_b_s_' variable
    }
    else{
        for ($a_c_i = 1; $a_c_i <= $a_c_a_limit; $a_c_i++) {
            if(${"dh_c_".str_pad($dh_i,2,"0",STR_PAD_LEFT)."_01"}['id'] == ${"a_c_a_".$a_c_i."_b"}){ // <-- checks against '$a_c_a_' variable
                ${"dh_sq_".str_pad($dh_i,2,"0",STR_PAD_LEFT)."_01"} = ${"a_b_s_".str_pad(($a_c_i+$a_b_s_addition),2,"0",STR_PAD_LEFT)};  // <-- set the '$dh_sq_' variable to '$a_b_s_' variable
                break; // <-- break the loop
            }
        } 
    }
} 
?>

Answer 2

那是个坏习惯。尝试使用开关盒，或使用数组作为容器

$array = [
  'id1' => 'action1',
  'id2' => 'action2',
   ...
];

$dh_sq_02_01 = $array[$dh_c_02_01['id']];

只是示例。希望有帮助

如何重复PHP“如果” 20次？

2 个答案: