PHP不需要的字符删除解

Question

In a description getting characters like "�".

To convert those I tried with utf8_encode() it is converting this charterers to another weird pattern.Also tried with regx and by setting character it didnt work.

Any quick solution to solve the issue?

Thanks.

Answer 1

Most likely, your string contains characters encoded using the UTF-8 character set. UTF-8 has some multibyte characters. For example, the Euro symbol € is represented in UTF-8 with the three bytes E2, 82, AC.

But your software is interpreting the string using a one-byte encoding, such as ISO-8859-1. This causes each byte of the 3-byte character to be interpreted as a separate character. E2, for example, is being displayed as â, when it is actually only the first byte of a 3-byte character.

utf8_encode() is not the solution to this. It takes an ISO-8859-1 encoded string and returns a UTF-8 string. You already have a UTF-8 string.

You have a couple of options.

One, fix whatever uses the string so that it expects the string to contain UTF-8. That will properly preserve the characters that are in the string. For example, if you are writing the string as part of a web page, ensure that the webpage's character encoding is UTF-8.

Two, convert the string to whatever encoding you are actually using. For example, you can convert the string from UTF-8 to ISO-8859-1 with utf_decode(). The disadvantage is that ISO-8859-1 cannot represent as many different characters as UTF-8, so some characters will simply be lost in the decoding.