Yii2替换名称中的符号[复制]

Question

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• PHP: fastest way to check for invalid characters (all but a-z, A-Z, 0-9, #, -, ., $)? 6 answers

In yii2, I would like to check for filename.

If this filename consist of any symbol (.$%-), replace it with _. Can you suggest some solutions for this?

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Answer 1

Use regular expression search and replace:

//Perform a regular expression match first
    if(preg_match('/[.$%-]+/', $file_name) == 1)
    {
      //perform regular expression search and replace
       $new_name = preg_replace('/[.$%-]+/', '_', $file_name);

    }