php - 如何重复 php "if" 20 次?
问题描述
我正在尝试使用dh_c_01_01
. 我该怎么做?
if ($dh_c_01_01['id'] == $a_c_a_max) {
$dh_sq_01_01 = $a_b_s_05;
} elseif ($dh_c_01_01['id'] == $a_c_a_1_b) {
$dh_sq_01_01 = $a_b_s_06;
} elseif ($dh_c_01_01['id'] == $a_c_a_2_b) {
$dh_sq_01_01 = $a_b_s_07;
} elseif ($dh_c_01_01['id'] == $a_c_a_3_b) {
$dh_sq_01_01 = $a_b_s_08;
} elseif ($dh_c_01_01['id'] == $a_c_a_4_b) {
$dh_sq_01_01 = $a_b_s_09;
} elseif ($dh_c_01_01['id'] == $a_c_a_5_b) {
$dh_sq_01_01 = $a_b_s_10;
} elseif ($dh_c_01_01['id'] == $a_c_a_6_b) {
$dh_sq_01_01 = $a_b_s_11;
} elseif ($dh_c_01_01['id'] == $a_c_a_7_b) {
$dh_sq_01_01 = $a_b_s_12;
} elseif ($dh_c_01_01['id'] == $a_c_a_8_b) {
$dh_sq_01_01 = $a_b_s_13;
} elseif ($dh_c_01_01['id'] == $a_c_a_9_b) {
$dh_sq_01_01 = $a_b_s_14;
}
if ($dh_c_02_01['id'] == $a_c_a_max) {
$dh_sq_02_01 = $a_b_s_05;
} elseif ($dh_c_02_01['id'] == $a_c_a_1_b) {
$dh_sq_02_01 = $a_b_s_06;
} elseif ($dh_c_02_01['id'] == $a_c_a_2_b) {
$dh_sq_02_01 = $a_b_s_07;
} elseif ($dh_c_02_01['id'] == $a_c_a_3_b) {
$dh_sq_02_01 = $a_b_s_08;
} elseif ($dh_c_02_01['id'] == $a_c_a_4_b) {
$dh_sq_02_01 = $a_b_s_09;
} elseif ($dh_c_02_01['id'] == $a_c_a_5_b) {
$dh_sq_02_01 = $a_b_s_10;
} elseif ($dh_c_02_01['id'] == $a_c_a_6_b) {
$dh_sq_02_01 = $a_b_s_11;
} elseif ($dh_c_02_01['id'] == $a_c_a_7_b) {
$dh_sq_02_01 = $a_b_s_12;
} elseif ($dh_c_02_01['id'] == $a_c_a_8_b) {
$dh_sq_02_01 = $a_b_s_13;
} elseif ($dh_c_02_01['id'] == $a_c_a_9_b) {
$dh_sq_02_01 = $a_b_s_14;
}
[$dh_sq_03_01, ... , $dh_sq_20_01]
最多 20 次
解决方案
我不确定我是否正确理解了您的问题,或者假设我知道您的变量是什么或它们的值是什么。
根据您的问题,此示例使用额外的变量、for 循环和动态变量。它还假设您的每个动态变量都存在:
<?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
}
}
}
}
?>
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