跳转到主要内容

mb-substr

mb_substr

Get part of string

ENTITY

string

mb_substr

string

string

int

start

int

null

length

ENTITY

string

null

encoding

ENTITY

Performs a multi-byte safe substr operation based on number of characters. Position is counted from the beginning of string. First character's position is 0. Second character position is 1, and so on.

ENTITY

string
The string to extract the substring from.

start
If start is non-negative, the returned string will start at the start'th position in string, counting from zero. For instance, in the string 'abcdef', the character at position 0 is 'a', the character at position 2 is 'c', and so forth.

If start is negative, the returned string will start at the start'th character from the end of string.

length
Maximum number of characters to use from string. If omitted or ENTITY is passed, extract all characters to the end of the string.

encoding
ENTITY

ENTITY

mb_substr returns the portion of string specified by the start and length parameters.

ENTITY ENTITY

ENTITY

ENTITY ENTITY
8.3.2 On invalid strings (those with encoding errors), character indices are now interpreted in the same manner as most other mbstring functions. This means that character indices returned by mb_strpos can be passed directly. For SJIS-mac (MacJapanese) strings, character indices now refer to the indices of the Unicode codepoints produced when the string is converted to Unicode, which differ from the character indices for the SJIS-mac characters that convert to a sequence of several codepoints.

ENTITY

mb_strcut

mb_internal_encoding