php给一组指定关键词添加span标签的方法，span标签_PHP教程

php给一组指定关键词添加span标签的方法，span标签

本文实例讲述了php给一组指定关键词添加span标签的方法。分享给大家供大家参考。具体如下：

这里是php给一组指定的关键词添加span标签，高亮突出显示关键词

// Example use: $spanned = codeWords($string_containing_keywords);
// My site: andrew.dx.am
// Using colour==blue, but different arrays of words and different 
// colours can be added.
function onlyWholeWords(&$value, $key) {
// Ignores words after // comment delimiters.
//$value = "/\b(" . $value . ")\b/";  // doesn't handle comments
//$value = "/^(?:(?!\/\/).)*\K\b(" . $value . ")\b/"; 
// \K lookbehind alternative is not supported in PHP " . $value . "