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正则表达式,如果单词包含关键字,则将其逐部分高亮显示

regex php

0

Simon · 技术社区 · 16 年前

我以前也问过同样的问题 here ,但现在我需要用另一种方式,然后用另一种方式来点亮键盘。我想这个例子会有帮助的

$str = "i like programming very much";
$key = "gram";

我要买点像这样的东西 赞成的意见 明

$str = "i like <span class='first'>pro</span><span class='second'>gram</span><span class='firs'>ing</span>"

why preg_replace("/([^\s]*?)(".preg_quote($key).")([^\s]*)/iu","<span class="first">$0</span><span class="second">$1</span><span class="first">$2</span>",$str);
doesn't work?

2 回复 | 直到 9 年前

1

Toto 16 年前

所以,不是:

preg_replace("/([^\s]*?)(".preg_quote($key).")([^\s]*)/iu","<span class="first">$0</span><span class="second">$1</span><span class="first">$2</span>",$str);

你必须做到:

preg_replace("/([^\s]*?)(".preg_quote($key).")([^\s]*)/iu","<span class='first'>$1</span><span class='second'>$2</span><span class='first'>$3</span>",$str);

2

1

Ian 16 年前

$words = explode(' ', "quick brown fox");
$out = array_map(process, $words);
return join(' ', $out);

并定义

function process($word) {
    $p = strpos($word, 'gram');
    if ($p === FALSE) return $word;
    /// take apart pieces with substr and friends, reformat in HTML, and return them
    $left = substr($word, 0, $p);
    $match = substr($word, $p, strlen('gram'));
    $right = substr($word, $p+strlen('gram'));
    return some_function_of($left, $match, $right);
}

再努力一点,但你想怎么做就怎么做。