How Can I Convert Text Patterns to HTML Tags Using PHP?

Convert Text Patterns to HTML Tags with PHP

Question:

How can I create a PHP function that formats text by rendering double asterisks as bold tags and single asterisks as italic tags, similar to the formatting found in the Stack Overflow editor?

Answer:

To achieve this formatting, you can utilize a regular expression in PHP:

$thenewtext = preg_replace('#\*{2}(.*?)\*{2}#', '<b></b>', '**Hello World** of PHP');

This regex pattern breaks down as follows:

• # and # are the pattern delimiters.
• *{2} specifies a pattern of two consecutive asterisks.
• (.*?) is a non-greedy match that captures any characters between the asterisks.
• *{2} again specifies two consecutive asterisks.
• The and tags enclose the captured characters to render them as bold.

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