使用正则表达式在 PHP 中命名捕获
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Named capture in PHP using regex
提问by sataho
How can I use named capture with regex in PHP? Can anyone give me a working example?
如何在 PHP 中使用带有正则表达式的命名捕获？谁能给我一个有效的例子？
回答by Dreaded semicolon
Doesn't work with replace , only useful for match in php
不适用于 replace ，仅对 php 中的匹配有用
$test="yet another test";
preg_match('/(?P<word>t[^s]+)/',$test,$matches);
var_dump($matches['word']);
回答by Alexander Yancharuk
According documentation
根据文档
PHP 5.2.2 introduced two alternative syntaxes
(?<name>pattern)and(?'name'pattern)
PHP 5.2.2 引入了两种替代语法
(?<name>pattern)和(?'name'pattern)
So you'll get same result using:
所以你会得到相同的结果：
<?php
preg_match('/(?P<test>.+)/', $string, $matches); // basic syntax
preg_match('/(?<test>.+)/', $string, $matches); // alternative
preg_match("/(?'test'.+)/", $string, $matches); // alternative
