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This article mainly explains "php how to find the character of the string", the content of the explanation is simple and clear, easy to learn and understand, now please follow the editor's train of thought slowly in depth, together to study and learn "php how to find the character of the string" bar!

The method of getting characters: 1, using the substr () function, you can intercept a certain length of characters from the specified position of the string, the syntax "substr ($str, character position, 1)"; 2, using the mb_substr () function, the syntax "mb_substr ($str, character position, 1, character encoding").

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php found the character of the string.

Method 1: use the substr () function

The substr () function can intercept a certain length of characters from a specified position in a string:

Substr ($string, $start, $length)

If you want to get only one character, set the $length parameter to 1.

Example:

Method 2: use the mb_substr () function

The mb_substr () function can intercept a specified part from a string. Unlike the substr () function, the mb_substr () function is valid not only for English characters, but also for Chinese characters. Its syntax format is as follows:

Mb_substr ($str, $start [, $length = NULL [, $encoding = mb_internal_encoding ()]])

$encoding: an optional parameter that represents the character encoding of $str. If omitted, internal character encoding is used.

Example:

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