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This article mainly introduces "php how to calculate a few characters", in daily operation, I believe many people in php how to calculate a few characters on the problem there are doubts, Xiaobian consulted all kinds of information, sorted out simple and easy to use operation methods, hope to answer "php how to calculate a few characters" doubts helpful! Next, please follow the small series to learn together!

Php calculates several characters: 1. Get the length of a given string through the strlen function;2. Use the mb_strlen function to get the number of string characters.

Operating environment: Windows 7 system, PHP 7.4 version, Dell G3 computer.

How does php count a few characters?

PHP Number of characters

Sometimes, for example, to register a user, you need to check the length of the user name. The following two functions may be used to make a judgment.

strlen

int strlen ( string $string )

Returns the length of a given string.

Note: It returns the number of bytes in the string, not the number of characters. Suppose a Chinese character "you" may return 3, depending on what code you use.

mb_strlen

int mb_strlen ( string $str [, string $encoding ] )

Returns the number of characters in a string.

str

concrete string

encoding

The encoding parameter is character encoding. If omitted, internal character encoding is used.

Note: Be sure to open php_mbstring.dll in the php.ini file,

At this point, the study of "how to calculate a few characters in php" is over, hoping to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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