我想替换 PHP 中<pre></pre>标签之间的<br />标签。喜欢这个：
$content = "Hello,<br /> <-- don't replace
Line 1<br /> <-- don't replace
Line 2<br /> <-- don't replace
<pre>Line 3<br /> <-- replace
Line 4</pre>";
我该怎么做？
function get_string($string, $start, $end){
$string = " ".$string;
$pos = strpos($string,$start);
if ($pos == 0) return "";
$pos += strlen($start);
$len = strpos($string,$end,$pos) - $pos;
$changeString = str_replace("<br />", "<replacement>", substr($string,$pos,$len) );
// above line replace <br /> data with <replacement>
return substr($string,0,$pos).$changeString.substr($string,$pos+$len);
}
$parsed = get_string($content , "<pre>", "</pre>");
echo $parsed;
我很困惑，因为您的帖子中$content没有预标签...... 只有我看到的是代码标签