mb_substr() WP 3.2.0

Compat function to mimic mb_substr().

No Hooks.

Return

String. Extracted substring.

Usage

mb_substr( $str, $start, $length, $encoding );

$str(string) (required)

The string to extract the substring from.

$start(int) (required)

Position to being extraction from in $str.

$length(int/null)

Maximum number of characters to extract from $str.
Default: null

$encoding(string/null)

Character encoding to use.
Default: null

Code of mb substr: wp-includes/compat.php ^{WP 5.2.2}

<?php
function mb_substr( $str, $start, $length = null, $encoding = null ) {
	return _mb_substr( $str, $start, $length, $encoding );
}