使用正则表达式PHP将文本文件拆分为数组
使用正则表达式PHP将文本文件拆分为数组
提问于 2020-05-15 00:34:36
我有一些字符串中的changelog文本，我想将每个changelog条目拆分为一个数组。
以下是变量- $changelog_txt中的changelog文本示例
version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
version 4.4.5 ( updated 05-01-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.因此，结果输出将是如下所示的数组：
array(
[0] => version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
[1] => version 4.4.5 ( updated 05-01-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
)有没有人能帮上忙或提点建议？
回答 3
Stack Overflow用户
发布于 2020-05-15 00:44:29
您可以使用preg_split()创建数组来完成此操作。
<?php
$str = <<<EOD
version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
version 4.4.5 ( updated 05-01-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
EOD;
$keywords = array_map('trim',preg_split("/^\s*$/m", $str));
print_r($keywords);
?>工作演示： https://3v4l.org/1mpZH
正则表达式解释：
/^\s*$/m^断言行开始处的位置
\s*可以匹配任何空格字符(等于[\r\n\t\f\v ])
*量词-在零和无限次之间进行匹配，尽可能多地进行匹配，根据需要进行反馈(贪婪)
$断言行尾位置全局模式标志
m修改器:多行。使^和$匹配每行的开始/结束(不仅仅是字符串的开始/结束)
Stack Overflow用户
发布于 2020-05-15 01:03:06
您可以使用preg_replace_callback()插入自己的分隔符，然后使用explode()。
<?php
$oldString ='version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
version 4.4.5 ( updated 05-01-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.';
$newString = preg_replace_callback('(version [0-9].[0-9].[0-9][0-9]?)', function($matches){return 'myUnlikelyDelimiter'.$matches[0];}, $oldString);
$array = explode('myUnlikelyDelimiter', $newString);
var_dump($array);
?>Stack Overflow用户
发布于 2020-05-21 18:46:25
<?php
$input_lines = <<<EOD
version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
version 4.4.5 ( updated 05-01-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
EOD;
preg_match_all('/(^[\s\S]*(?:\r*\n{2}))/U', $input_lines, $output_array);
print_r($output_array);结果：
Array
(
[0] => Array
(
[0] => version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
)
[1] => Array
(
[0] => version 4.4.6 ( updated 05-08-2020 )
- Improved logic to keep collapse/expand state consistent for Add/Clone/Delete/DnD actions in Layers panel.
- Updated Layers panel to allow selecting Goal and Winner for Split Testing from Layers panel.
- Improved the Visual Builder scroll performance.
- Added vmin and vmax to css allowed units in module settings.
)
)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/61802614
复制相关文章
相似问题
腾讯云开发者
