循環遍歷關聯數組並賦值

Question

我有一個數組：

$instructions = array (
array("step_no"=>"1","description"=>"Ensure that you have sufficient balance"),
array("step_no"=>"2","description"=>"Approve the request sent to your phone")
);

我想要的是遍歷這個數組，我已經完成了，但我現在很困惑，因為我不知道如何獲得我想要的 output。

foreach ($array as $key => $value) { 
//echo $key . "\n"; 
foreach ($value as $sub_key => $sub_val) {      
    if (is_array($sub_val)) { 
        //echo $sub_key . " : \n"; 
        foreach ($sub_val as $k => $v) { 
            echo "\t" .$k . " = " . $v . "\n"; 
        } 
    } else { 
        echo $sub_key . " = " . $sub_val . "\n"; 
    } 
  } 
}

上面的代碼循環遍歷數組，但是這行代碼：

echo $sub_key . " = " . $sub_val . "\n";

給我：

step_no = 1 description = Ensure that you have sufficient balance step_no = 2 description = Approve the request sent to your phone

當我將其更改為：

echo $sub_val . "\n"; 

它給了我：

1 Ensure that you have sufficient balance 2 Approve the request sent to your phone

但我真正想要的是：

1. Ensure that you have sufficient balance 
2. Approve the request sent to your phone

這可能嗎？ 謝謝。

Answer 1

聞起來好像您不是在命令行中而是在瀏覽器中運行此腳本。 如果是這樣，則\n不會產生視覺效果（除非在<pre>塊內）並且您必須使用 HTML 標簽<br />代替。 此外，放棄串聯瘋狂並使用變量替換：

echo "{$sub_key}. = {$sub_val}<br/>";

Answer 2

$instructions = array (
    array("step_no"=>"1","description"=>"Ensure that you have sufficient balance"),
    array("step_no"=>"2","description"=>"Approve the request sent to your phone")
);

foreach($instructions as $instruction) {
    echo $instruction['step_no'] . '. ' . $instruction['description'] . "\n";
}

如果是 HTML 您可能需要使用<ol>和<li> 。

Answer 3

您可以通過這種方式簡單地實現

<?php
    $instructions = array (
                           array("step_no"=>"1","description"=>"Ensure that you have sufficient balance"),
                           array("step_no"=>"2","description"=>"Approve the request sent to your phone")
);

   foreach($instructions as $instruction){

       echo $instruction['step_no'].'. '.$instruction['description'].PHP_EOL;
   }
?>

始終保持簡單。