PHP - 为数组中的一个键分配两个值

Question

我需要以这种格式获得一个数组:

$arr = {

$domain => $PR => $OBL

}

换句话说,我希望每个域都充当一个键,它有两个值,PR和OBL(pagerank和出站链接)分配给它.只为一个值执行此操作很简单,我只需循环并设置:$arr[$domain] = $PR;

然后,通过简单的for-each循环提取数据很容易.但是,为每个域存储两个值的最佳方法是什么？如何循环它以便稍后提取数据？

Answer 1

假设您运行的是最新的PHP(5.5.x):

$arr = [
  'domain1.tld' => [8, 2543],
  'domain2.tld' => [3, 684],
];
foreach($arr as $domain => list($pr, $obl))
  echo "<p>$domain has PageRank $pr and $obl outbound link(s)</p>";

或者,更兼容,更冗长:

$arr = [
  'domain1.tld' => ['PR' => 8, 'OBL' => 2543],
  'domain2.tld' => ['PR' => 3, 'OBL' => 684],
];
foreach($arr as $domain => $properties) {
  $pr    = $properties['PR'];
  $obl   = $properties['OBL'];
  echo "<p>$domain has PageRank $pr and $obl outbound link(s)</p>";
}