Question

字符串

T1 - X1(1), 7
T2 - C2(-9), -15
T3 - Y2(1), 3
T5 - C2(-1), 100

regexp用于preg_split

/[-,#\n#()]/

在上面的正则表达式中，它考虑的是臀部空间与数字前面的负数相同。

需要最终结果 在preg_split和trim空间之后的数组[＆＃34; T1＆＃34;，＆＃34; X1＆＃34;，＆＃34; 1＆＃34;，＆＃34; 7＆＃34;，＆＃34; T2＆＃ 34;，＆＃34; C2＆＃34;＆＃34; -9＆＃34;＆＃34; -15＆＃34;＆＃34; T3＆＃34;＆＃34; Y2＆＃34 ;, ＆＃34; 1＆＃34;＆＃34; 3＆＃34;＆＃34; T5＆＃34;＆＃34; C2＆＃34;＆＃34; -1＆＃34;＆＃34; 100＆＃34;]

需要在regexp中进行哪些更改才能获得所需的最终结果？

Answer 1

You should skip the negative numbers. This can be done with PCRE verbs:

-\d(*SKIP)(*FAIL)|\s*[-,#\n#()]\s*

PHP example:

$string = 'T1 - X1(1), 7
T2 - C2(-9), -15
T3 - Y2(1), 3
T5 - C2(-1), 100';
print_r(preg_split('/-\d(*SKIP)(*FAIL)|\s*[-,#\n#()]\s*/', $string, -1, PREG_SPLIT_NO_EMPTY));

Answer 2

You could match either a whitespace character, a hyphen and a whitespace s-\s character or | match the characters you want to exclude [(),\s] using a character class:

\s-\s|[(),\s]

$data = <<<DATA
T1 - X1(1), 7
T2 - C2(-9), -15
T3 - Y2(1), 3
T5 - C2(-1), 100
DATA;

$result = preg_split("~\s-\s|[(),\s]~", $data, -1, PREG_SPLIT_NO_EMPTY);

print_r($result);

Demo

什么是正则表达式在PHP中拆分后面的字符串？

2 个答案: