Use shared styles to replace consecutive pseudo-tags with HTML tags
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P粉926174288 2023-09-01 18:44:45
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<p>I have this line</p> <pre class="brush:php;toolbar:false;">a[link], a[link] a [link] text text text a [link] text a[link] text</pre> <p>So I want to find the first link before the text and do one operation on them and highlight them in a special style (in this case, maybe more or less three) and find the other links after the text Text and highlight them in different styles. </p> <p>I could only find the first three links, but I don’t know how well I did</p> <pre class="brush:php;toolbar:false;"><?php $re = '/^(a\[(\w [\s ]?) \],?\s?) /iu'; $str = 'a[link], a[link] a[link] text text text a[link] text a[link] text'; preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0); var_dump($matches); ?></pre> <hr /> <p>I will now try to give an illustrative example of what is required: There is such a paragraph</p> <blockquote> <p>a[link1], a[link2] a[link3] text text text a[link4] text a[link5] text</p> </blockquote> <p>In this article, there are links designated <code>a[...]</code>. In the future, I need to replace these links and change them to this form: </p> <blockquote> <p><a href="link1" class="style1">link1</a><a href="link2" class="style1">link2</a><a href=" link3" class="style1 ">link3</a> text text text<a href="link4" class="style2">link4</a> text<a href="link5" class="style2 ">link5</a> text</ p> </blockquote> <p>The first three linked classes are assigned the value <code>style1</code>. The link following the text already has a class value assigned to <code>style2</code>. </p> <p>Initially, there can be three links in front of the text, four or even one, and there can be any number of links in any order after the text. </p>
P粉926174288
P粉926174288

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Don't try to match everything at once. Match each link individually, then iterate over the results. To do this, use preg_match_all; if you want to replace on every match, use preg_replace_callback. use:

a\[(\w+)\]

should achieve your goal.

It's not clear what the goal of [\s ]? is, you can choose to allow spaces or . Also unclear about the optional comma and space after the link. Keeping it simple is the best approach.

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