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This article will explain in detail how to understand PHP regular expression application examples, the quality of the article content is high, so Xiaobian share for everyone to make a reference, I hope you have a certain understanding of related knowledge after reading this article.

PHP regular expressions have many applications, so we will encounter in the actual development of applications to extract strings, advanced substitution functions, so how to achieve it? Let's look at the specific process.

PHP regular expression application of the extraction string introduction:

ereg() and eregi()

PHP regular expression application extraction string implementation:

One feature allows users to extract part of a string using regular expressions (see manual for details).

For example, if we want to extract a filename from path/URL-here's what you need:

ereg("([^\\/]*)$", $pathOrUrl, $regs); echo $regs[1];

PHP regular expression application of advanced substitution introduction:

ereg_replace() and eregi_replace() are also very useful

Advanced substitution implementation of PHP regular expression applications:

Suppose we want to replace all the space signs with commas:

ereg_replace("[ \n\r\t]+","," trim($str)); Examples of how to understand PHP regular expressions are shared here. I hope the above content can help you to learn more. If you think the article is good, you can share it so that more people can see it.

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