left()

Read(2027) Label: source string, leftmost, substring,

Description:

Get a substring starting from the leftmost side of a string.

Syntax:

left(s,n)

Note:

The function gets a substring from source string s starting from the first character at the leftmost side to the nth character. If n<0, get a substring starting from the first character at the leftmost side to the abs(n)th-to-last character.

Parameter:

s

The source string

n

The nth character of source string s; return an empty string when the absolute value of n is greater than the length of s

Return value:

A string

Example:

left("abcdefg",3)

"abc".

left("abcdefg",-3)

"abcde". 

left("abcdefg",-10)

Return an empty string.

Related functions:

mid()

right()