Question

我有一个数组：

$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")
);

我想要的是遍历这个数组，但是我现在很困惑，因为我不知道如何获得所需的输出。

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"; 
    } 
  } 
}

上面的代码循环遍历数组，但是以下代码行：

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

给我：

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

当我将其更改为：

echo $sub_val . "\n";

它给了我

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

但是我真正想要的是：

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

这有可能吗？谢谢。

Answer 1

闻起来好像您不是在命令行中运行此脚本，而是在浏览器中运行。如果是这样，则\n不会产生视觉效果（除非在<pre>块内），您必须使用HTML标签<br />来代替。另外，删除级联疯狂并使用变量替换：

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

Answer 2

list

如果是HTML，则可能要使用$instructions = array ( array("step_no"=>"1","description"=>"Ensure that you have sufficient balance"), array("step_no"=>"2","description"=>"Approve the request sent to your phone") ); foreach($instructions as $instruction) { echo $instruction['step_no'] . '. ' . $instruction['description'] . "\n"; }和<ol>。

Answer 3

您可以通过这种方式简单实现

<?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;
   }
?>

总是保持简单。

遍历关联数组并分配值

3 个答案: