Question

我想将此字符串拆分为3个数组元素。

MW 01:00 PM-02:30 PM

输出：

array[0] = MW
array[1] = 01:00 PM
array[2] = 02:30 PM

用正则表达式帮助我，该表达式会将字符串提取到数组中。

^[a-zA-Z\d-_]+$

Answer 1

如果前面有split，则可以使用optional，在空格处digit和lookahead连字符之间。

$arr = preg_split('/ +-? *(?=\d)/', $str);

See demo at eval.in

Answer 2

<?php 

$str = "MW 01:00 PM - 02:30 PM";

$matches = [];

preg_match("/^([a-zA-Z]+)\s+(\d{1,2}:\d{1,2}\s+PM)\s+\-\s+(\d{1,2}:\d{1,2}\s+PM)$/",$str,$matches);

print_r($matches);

输出

Array
(
    [0] => MW 01:00 PM - 02:30 PM
    [1] => MW
    [2] => 01:00 PM
    [3] => 02:30 PM
)

Answer 3

这也可以（但更长）：

$str = "MW 01:00 PM - 02:30 PM";
preg_match('/([A-Z]{2}) ([0-9]{2}:[0-9]{2} [A-Z]{2}) - ([0-9]{2}:[0-9]{2} [A-Z]{2})/', $str, $match);

echo '<pre>' . print_r($match, true) . '</pre>';

输出：

Array
(
    [0] => MW 01:00 PM - 02:30 PM
    [1] => MW
    [2] => 01:00 PM
    [3] => 02:30 PM
)

用正则表达式PHP通过空格和连字符拆分句子

3 个答案: