-1 
function emotify($text)
{
    $icons = array(
                ':)'    =>  '<img src="/images/emoticons/happy.png" alt="smile" class="icon_smile" />',
                ':-)'   =>  '<img src="/images/emoticons/happy.png" alt="smile" class="icon_smile" />',
                ':D'    =>  '<img src="/images/emoticons/grin.png" alt="smile" class="icon_laugh" />',
                ':d'    =>  '<img src="/images/emoticons/grin.png" alt="laugh" class="icon_laugh" />',
                ":'("    =>  '<img src="/images/emoticons/crying.png" alt="crying" class="icon_cry" />',
                ';('    =>  '<img src="/images/emoticons/crying.png" alt="crying" class="icon_cry" />',
                ':d'    =>  '<img src="/images/emoticons/grin.png" alt="laugh" class="icon_laugh" />',
                ';)'    =>  '<img src="/images/emoticons/wink.png" alt="wink" class="icon_wink" />',
                ':P'    =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
                ':-P'   =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
                ':-p'   =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
                ':p'    =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
                ':('    =>  '<img src="/images/emoticons/sad.png" alt="sad face" class="icon_sad" />',
                ':-('   =>  '<img src="/images/emoticons/sad.png" alt="sad face" class="icon_sad" />',
                ':o'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shock" />',
                ':O'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shock" />',
                ':0'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shack" />',
                ':|'    =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
                ':-|'   =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
                ':/'    =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
                ':-/'   =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />'
        );

     foreach($icons as $icon=>$image) {
      $icon = preg_quote($icon, '/');
$return = preg_replace("/$icon/i", $image, $text);
      }
    return $return;
}
$posted = emotify($posted);

这是我将表情符号更改为图像的代码。它只是返回
Warning: preg_replace(): Unknown modifier '/' on line 203

我该如何解决？编辑：这是我的所有代码，包括数组，这可能是我的代码不起作用的问题。我不确定，但没有一个答案有帮助，所以我认为这一定是问题所在。

4

5 回答 5

4

通过评论进一步确定了你在做什么，这里是一个使用 DOM 解析器和一点聪明的答案：

$dom = new DOMDocument();
$dom->loadHTML($text);
$xpath = new DOMXPath($dom);
foreach($icons as $icon=>$image) {
  $textnodes = $xpath->query("//text()"); // get all text nodes
  foreach($textnodes as $node) {
    // the regex used here requires that there not be a non-space before it
    // in other words, it must be the first thing, or have a space before it
    while( preg_match("((?<!\S)".preg_quote($icon).")i",$node->nodeValue,$m,PREG_OFFSET_CAPTURE)) {
      $emote = $node->splitText($m[0][1]); // the offset is stored here
      $node = $emote->splitText(strlen($icon));
      // now replace the emote with the image:
      $img = $dom->createElement("img");
      $img->setAttribute("src",$image);
      // IMPORTANT: $image must be just the SRC, and NOT the entire HTML node
      $emote->parentNode->replaceChild($img,$emote);
    }
  }
}
// loadHTML puts the HTML into a document, we need to get it back out
$result = $dom->saveHTML($dom->getElementsByTagName('body')->item(0));
$result = substr($result,strlen("<body>"),-strlen("</body>"));

现在您可以使用$result，一切顺利，它应该具有有效的 HTML，包括转换后的表情。

于 2013-09-03T16:31:04.897 回答
2

preg_quote实际上有 2 个参数。第二个可选参数可以regex delimiter是用于preg functions.

根据手册：

delimiter

If the optional delimiter is specified, it will also be escaped. This is useful for escaping the delimiter that is required by the PCRE functions. The / is the most commonly used delimiter.

像这样使用您的代码：

$icon = preg_quote($icon, '/');
$return = preg_replace("/$icon/i", $image, $text);

更新：问题是你没有$return在 foreach 循环开始之前初始化变量并且总是试图替换原始$text变量本身。

让你的 foreach 循环像这样：

$return = $text;
foreach($icons as $icon=>$image) {
       $icon = preg_quote($icon, '/');
       $return = preg_replace("/$icon/i", $image, $return);
}
于 2013-09-03T16:23:50.630 回答
2

的值中可能有一个斜线$icon，因此您实际上是在调用

preg_replace( '/foo/bar/i', $image, $text )

这是一个错误。

于 2013-09-03T16:12:05.733 回答
2

preg_quote除非您告诉它这是您选择的分隔符，否则不会转义斜杠。

话虽这么说，使用 PREG 是大材小用。

改为使用str_ireplace。

于 2013-09-03T16:12:37.957 回答
1

你可以这样做：

function emotify($text)
{
    $icons = array(
        ':)'    =>  '<img src="/images/emoticons/happy.png" alt="smile" class="icon_smile" />',
        ':-)'   =>  '<img src="/images/emoticons/happy.png" alt="smile" class="icon_smile" />',
        ':D'    =>  '<img src="/images/emoticons/grin.png" alt="smile" class="icon_laugh" />',
        ':d'    =>  '<img src="/images/emoticons/grin.png" alt="laugh" class="icon_laugh" />',
        ':\'('  =>  '<img src="/images/emoticons/crying.png" alt="crying" class="icon_cry" />',
        ';('    =>  '<img src="/images/emoticons/crying.png" alt="crying" class="icon_cry" />',
        ';)'    =>  '<img src="/images/emoticons/wink.png" alt="wink" class="icon_wink" />',
        ':P'    =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
        ':-P'   =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
        ':-p'   =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
        ':p'    =>  '<img src="/images/emoticons/tounge.png" alt="tounge" class="icon_tounge" />',
        ':('    =>  '<img src="/images/emoticons/sad.png" alt="sad face" class="icon_sad" />',
        ':-('   =>  '<img src="/images/emoticons/sad.png" alt="sad face" class="icon_sad" />',
        ':o'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shock" />',
        ':O'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shock" />',
        ':0'    =>  '<img src="/images/emoticons/shocked.png" alt="shock" class="icon_shack" />',
        ':|'    =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
        ':-|'   =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
        ':/'    =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />',
        ':-/'   =>  '<img src="/images/emoticons/straight.png" alt="straight face" class="icon_straight" />'
        );
    return str_replace(array_keys($icons), array_values($icons), $text);
}

请注意，在这种情况下，最好定义两个数组。

注意：这种搜索/替换不能区分大小写:D :d
笑的表情是重复的。

于 2013-09-03T17:09:42.660 回答