php 正则表达式 str_replace
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Regex str_replace
提问by Mikkel Winther
Would it be possible to incorporate a str_replacemethod with a regular expression, designed to catch url strings in a simple html < textfield > input type?
是否有可能将一种str_replace带有正则表达式的方法结合起来，以在简单的 html < textfield > 输入类型中捕获 url 字符串？
I'm considering something simple like a tip for the user to set it up as follows:
我正在考虑一些简单的事情，比如让用户按如下方式设置它的提示：
This is some text and click this link here.
这是一些文字，请单击此处的链接。
Obviously the word "here" is a href to the url before it (or after it, if that makes a difference). The text input is drawn from a MySQL db.
显然，“此处”一词是指向其之前（或之后，如果有所不同）的 url 的 href。文本输入来自 MySQL 数据库。
I believe the start of my solution is something along the lines of:
我相信我的解决方案的开始是这样的：
$regex = '';
$pg = $row['pg'];
$pg = str_replace('{regex goes here}', $pg);
But I know things are missing. And then I would just output the $pg paragraph.
但我知道有些东西不见了。然后我只输出 $pg 段落。
回答by Wesley van Opdorp
回答by Asad Saeeduddin
What you're looking for is preg_replace:
你要找的是preg_replace：
$pg = preg_replace('{regex goes here}', '{replacement goes here}', $pg);
