preg_replace 特定模式
我想使用 preg_replace 将“* @license until */”替换为“testing”。
我该怎么做呢？
我的文字如下：
/*
* @copyright
* @license
*
*/
我希望大家能够正确理解我的问题。
I would like to use preg_replace to replace "* @license until */" with "testing".
How can I do it?
My text is the one below:
/*
* @copyright
* @license
*
*/
I hope everyone have understand my question correctly.
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评论（2）
这是一个可以执行您想要的操作的正则表达式（以多行模式运行）
它与被删除的部分匹配：
说明：
^ ~ start-of-string \s* ~ any number of white space \* ~ a literal star \s* ~ any number of white space @license ~ the string "@license" (?: ~ non-capturing group (?! ~ negative look ahead (a position not followed by...): \s* ~ any number of white space \* ~ a literal star / ~ a slash ) ~ end lookahead (this makes it stop before the end-of-comment) [\s\S] ~ match any single character )+ ~ end group, repeat as often as possible请注意，正则表达式仍然必须根据 PHP 字符串规则和进行转义到
preg_replace()规则。编辑：如果您愿意 - 要绝对确定在匹配的文本后面确实有一个注释结束标记，正则表达式可以像这样扩展：
^\s*\*\s*@license(?:(?!\s*\*/)[\s\S])+(?=\s*\*/) ↑ positve look ahead for +-----------an end-of-comment markerHere is one regex that does what you want (run it in multi-line mode)
It matches the part that is striked:
Explanation:
^ ~ start-of-string \s* ~ any number of white space \* ~ a literal star \s* ~ any number of white space @license ~ the string "@license" (?: ~ non-capturing group (?! ~ negative look ahead (a position not followed by...): \s* ~ any number of white space \* ~ a literal star / ~ a slash ) ~ end lookahead (this makes it stop before the end-of-comment) [\s\S] ~ match any single character )+ ~ end group, repeat as often as possibleNote that the regex must still be escaped according to PHP string rules and according to
preg_replace()rules.EDIT: If you feel like it - to make absolutely sure that there really is an end-of-comment marker following the matched text, the regex can be expanded like this:
^\s*\*\s*@license(?:(?!\s*\*/)[\s\S])+(?=\s*\*/) ↑ positve look ahead for +-----------an end-of-comment marker嗯，这并不太难。您需要做的就是使用
s修饰符（PCRE_DOT_ALL，它使正则表达式中的.匹配新行）：这应该适合您（注意，未经测试）。 ..
Well, it's not too hard. All you need to do is use the
smodifier (PCRE_DOT_ALL, which makes a.in the regex match new lines):That should work for you (note, untested)...