Twig / PHP - 使用替换或正则表达式格式化字符串
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Twig / PHP - Format string using Replace or Regex
提问by Awena
How can I format a string in Twig as follows:
如何在 Twig 中格式化字符串，如下所示：
For example: img = 05myphoto-Car.jpg
例如： img = 05myphoto-Car.jpg
I need to remove the numeric prefix and -
I am mainly using this to output captions for images based on their filename
我需要删除数字前缀，-
我主要使用它来根据文件名输出图像的标题
Desired Output:
期望输出：
Myphoto Car
I have tried this so far, from the docs:
到目前为止，我已经从文档中尝试过这个：
{{ img |replace({'.jpg': "", '-' : " "}) }}
Outputs String
输出字符串
05myphoto Car
I also tried {{ replace({'range(0, 9)': ""}) }} // for numeric prefix - did not work
我也试过 {{ replace({'range(0, 9)': ""}) }} // for numeric prefix - did not work
回答by Anderson Ivan Witzke
Better late than never...
迟到总比不到好...
Just register it (for me was on index.php)
只需注册它（对我来说是在index.php）
$app['twig']->addFilter('preg_replace', new Twig_Filter_Function(function ($subject, $pattern, $replacement) {
return preg_replace($pattern, $replacement, $subject);
}));
Then on the view: {{myVar|preg_replace('/\\d+/','')}}
然后在视图上： {{myVar|preg_replace('/\\d+/','')}}
Notice that all backslashes MUST be escaped, if not, they will be removed by Twig...
请注意，所有反斜杠都必须转义，否则，它们将被 Twig 删除...
回答by medoingthings
This works for me just fine (Craft CMS):
这对我来说很好（Craft CMS）：
{# Removes all characters other than numbers and + #}
{{ profile.phone|replace('/[^0-9+]/', '') }}
回答by Evgeniy Kuzmin
If you are willing to do it in the template, though it would be better as a controller/service, you can enable the preg_replacefilterand strip numbers with something like preg_replace('/\d+/','')and use the capitalize filter in addition.
如果您愿意在模板中执行此操作，尽管作为控制器/服务会更好，但您可以preg_replacepreg_replace('/\d+/','')使用类似的内容启用过滤器和条带编号，并另外使用大写过滤器。
