正则表达式以查找句子中的最后一个单词

Question

如何在正则表达式的句子中找到最后一个单词？

Answer 1

如果您需要查找字符串中的最后一个单词,请执行以下操作:

m/
    (\w+)      (?# Match a word, store its value into pattern memory)

    [.!?]?     (?# Some strings might hold a sentence. If so, this)
               (?# component will match zero or one punctuation)
               (?# characters)

    \s*        (?# Match trailing whitespace using the * because there)
               (?# might not be any)

    $          (?# Anchor the match to the end of the string)
/x;

在此语句之后,$ 1将保留字符串中的最后一个单词.您可能需要通过添加更多标点符号来扩展字符类[.!？].

在PHP中:

<?php

$str = 'MiloCold is Neat';
$str_Pattern = '/[^ ]*$/';

preg_match($str_Pattern, $str, $results);

// Prints "Neat", but you can just assign it to a variable.
print $results[0];

?>