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Asked 3 years ago
17 Jun 2021
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Breanna

Breanna posted

which ones will work with UTF-8 in PHP string functions ?

which ones will work with UTF-8 in PHP string functions ?
Cimb

Cimb
answered Apr 27 '23 00:00

Many PHP string functions can work with UTF-8 encoded strings, but not all of them. The reason for this is that UTF-8 is a multibyte encoding, meaning that some characters can take up more than one byte, and not all string functions are designed to handle multibyte characters properly.

Here are some of the PHP string functions that work with UTF-8 encoded strings:

strlen (): This function returns the length of a string in bytes, but can work with multibyte characters by using the mb_strlen() function instead.

mb_strlen (): This function returns the length of a string in characters, taking into account multibyte characters.

substr (): This function extracts a portion of a string, but can cause problems with multibyte characters if not used properly. To extract a portion of a UTF-8 encoded string, use the mb_substr () function instead.

mb_substr (): This function extracts a portion of a UTF-8 encoded string, taking into account multibyte characters.

strtolower (): This function converts a string to lowercase, but can cause problems with multibyte characters if not used properly. To convert a UTF-8 encoded string to lowercase, use the mb_strtolower () function instead.

mb_strtolower (): This function converts a UTF-8 encoded string to lowercase, taking into account multibyte characters.

strtoupper (): This function converts a string to uppercase, but can cause problems with multibyte characters if not used properly. To convert a UTF-8 encoded string to uppercase, use the mb_strtoupper () function instead.

mb_strtoupper (): This function converts a UTF-8 encoded string to uppercase, taking into account multibyte characters.

mb_convert_encoding(): This function converts the character encoding of a string to another encoding, such as from ISO-8859-1 to UTF-8.

It's important to note that when working with UTF-8 encoded strings, you should use the mbstring extension, which provides multibyte string functions that are specifically designed to handle UTF-8 encoded strings.
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