Question

这是非常多余的，我只想对所要求的任何部分以及所选择的多个部分的变化进行一次“OK OK SEND”。

if ($this->part1) return "OK TO SEND: $this->part1 ";
if ($this->part2) return "OK TO SEND: $this->part2 ";
if ($this->part3) return "OK TO SEND: $this->part3 ";
if ($this->part4) return "OK TO SEND: $this->part4 ";
if ($this->part5) return "OK TO SEND: $this->part5 ";
if ($this->part6) return "OK TO SEND: $this->part6 ";
if ($this->part7) return "OK TO SEND: $this->part7 ";

我不确定我是否只使用if和ifelse语句或循环。我确定循环最有效。任何帮助将不胜感激。

这样的东西？

$params = array($this->part1, $this->part2, $this->part3, $this->part4, $this->part5, $this->part6, $this->part7) ;

我会使用in_array函数吗？

Answer 1

也许是这样的：

$params = array($this->part1, $this->part2, $this->part3, $this->part4, $this->part5, $this->part6, $this->part7);

// This will return a string noting the only option selected
function partRequested($params) {
  foreach($params as $part) {
    if($part) // or maybe ($part !== false) depending on what is contained
      return 'OK TO SEND: ' . $part . ' ';
  }
}

// This will return a single string noting all the options selected
function partsRequested($params) {
  foreach($params as $part) {
    if($part) // or maybe ($part !== false) depending on what is contained
      $result .= 'OK TO SEND: ' . $part . ' <br />';
  }
  return $result;
}

partsRequested（）返回的字符串如下所示：

OK TO SEND: part1
OK TO SEND: part3
OK TO SEND: part4
OK TO SEND: part5
// etc

这里有一些不同的格式

// This will return a single string noting all the options selected, different formatting
function partsRequested($params) {
  foreach($params as $part) {
    if($part) // or maybe ($part !== false) depending on what is contained
      $result .= $part . ' <br />';
  }
  return $result;
}

// Then to echo the results
if($result = partsRequested($params))
  echo 'OK TO SEND: ' . $result;

回显的字符串将如下所示：

OK TO SEND: part1
part3
part4
part5

Answer 2

你可以这样做：

for($c = 1; $c < 8; $c++)
{
   $part = "part" . $c;
   if($this->$part)
      return "OK TO SEND: " . $this->$part . " ";
}

我建议您使用此方法，因为您可能需要稍后添加更多部分。

编辑：如果你想要一个活跃项目数组，你可以这样做：

$active = array();
for($c = 1; $c < 8; $c++)
{
   $part = "part" . $c;
   if($this->$part)
      $active[] = $part;
}
return $active;

-Ken

而不是在php中重复这样的每个函数，为每个循环使用a会更有效吗？

2 个答案: