Question

我想通过链接替换单词组。我使用多维数组来定义这些（在现实世界中将有数千个）。这是代码：

$text = "<html><body><pre>
Here is Foo in text.
Now come Baz? and Bar-X.
Replace nothing here: Foo (followed by brackets).
</pre></body></html>";

$s = array(
  array("t" => "Foo", "u" => "http://www.foo.com", "c" => "foo"),
  array("t" => "Baz?", "u" => "http://www.baz.net", "c" => "test"),
  array("t" => "Bar-X", "u" => "http://www.baz.org", "c" => "test")
 );

foreach ($s as $i => $row) {
  $replaced = preg_replace('/(?=\Q'.$row["t"].'\E[^(]+$)\b\Q'.$row["t"].'\E\b/m',
                           '<a href="'.$row["u"].'" class="'.$row["c"].'">'.$row["t"].'</a>',
                           $text);
 }
echo $replaced;

?>

问题是只替换了一个数组元素，而不是全部。这是关于peg_replace（）中$ text的内容。有人给我一个暗示吗？谢谢！

Answer 1

你必须添加到$replaced var，现在你要覆盖变量。

    <?php

    $text = "<html><body><pre>
    Here is Foo in text.
    Now come Baz? and Bar-X.
    Replace nothing here: Foo (followed by brackets).
    </pre></body></html>";

    $s = array(
      array("t" => "Foo", "u" => "http://www.foo.com", "c" => "foo"),
      array("t" => "Baz?", "u" => "http://www.baz.net", "c" => "test"),
      array("t" => "Bar-X", "u" => "http://www.baz.org", "c" => "test")
     );

    $replaced = $text;
    foreach ($s as $i => $row) {
      $replaced = preg_replace('/(?=\Q'.$row["t"].'\E[^(]+$)\b\Q'.$row["t"].'\E\b/m',
                               '<a href="'.$row["u"].'" class="'.$row["c"].'">'.$row["t"].'</a>',
                               $replaced );
     }
    echo $replaced;

    ?>

preg_replace多维数组问题

1 个答案: