我有一个包含单词的数组,例如
$arr = array("go", "walk", ...)
我希望能够在句子中将这些词替换为链接。但是,只有在它们完全匹配时才应该替换(例如,“walk”应该与“Walk”或“walk!”匹配,但不应与“walking”匹配)。
替换应该是一个简单的链接,如:
< a href='#walk' >walk< /a >
。有人有想法吗?
"\bwalk\b"
function magicWords($words, $string) {
$from = $to = array();
foreach($words as $word) {
$from[] = "/\b$word\b/i"; // \b represents a word boundary
$to[] = '<a href="#' . strtolower($word) . '">${0}</a>';
}
return preg_replace($from, $to, $string);
}
$words = array('go', 'walk');
echo magicWords($words, "Lets go walking on a Walk");
'Lets <a href="#go">go</a> walking on a <a href="#walk">Walk</a>.'
$words = array('walk','talk');
foreach($words as $word)
{
$word = preg_replace("/\b$word\b/","< a href='#$word' >$word< /a >",$word);
}
我认为以下内容可能是你想要的。
<?php
$someText = 'I don\'t like walking, I go';
$words = array('walk', 'go');
$regex = '/\\b((' . implode('|',$words) . ')\\b(!|,|\\.|\\?)?)/i';
echo preg_replace_callback(
$regex,
function($matches) {
return '<a href=\'' . strtolower($matches[2]) . '\'>' . $matches[1] . '</a>';
},
$someText);
?>
然而需要注意以下几点:
你的例子非常具体,因此很难确切知道你在实践中需要匹配什么(例如,您是否想在链接中包含“!”?),但请尝试以下内容:
<?php
$text = "Walk! I went for a walk today. I like going walking. Let's go walk!";
$needles = array('go', 'walk');
foreach ($needles as $needle)
$text = preg_replace('/\b(' . $needle . ')\b/i', '<a href="#' . $needle . '">$1</a>', $text);
print $text;