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PHP mb_substr() Function Usage and Example

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Online Example

Returns "Basic Tutorial" from the string:

Example

<?php
echo mb_substr("Basic Tutorial Website", 0,　4);
//　Output: Tutorial Tutorial
?>

Test and see ‹/›

Definition and Usage

The mb_substr() function returns a part of the string. We have learned about the substr() function before, which is only for English characters. If you need to split Chinese characters, you need to use mb_substr().

Note:If the start parameter is negative and the length is less than or equal to start, then length is 0.

Syntax

mb_substr(string $str, int $start[, int $length = NULL[, string $encoding = mb_internal_encoding()]]): string

Parameters	Description
str	Required. Extract a substring from this string.
start	Required. Specify where to start in the string. Positive number - Starts at the specified position in the string Negative number - Starts from the specified position from the end of the string 0 - Starts at the first character in the string
length	Optional. Specify the length of the string to return. The default is to the end of the string. Positive number - Returns from the position of the start parameter Negative number - Returns from the end of the string
encoding	Optional. Character encoding. If omitted, the internal character encoding is used.

Technical Details

Return value:	Returns the extracted part of the string, or FALSE if the operation fails, or an empty string.
PHP Version:	4+

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