substring/4—retrieve a substring of a specified length beginning at a specified offset

The substring/4  function retrieves a substring of a specified length beginning at a specified offset.

$NEWSTR=substring($STR,$SKIP,$LEN)

substring/4 arguments

Argument

Mode

Type

Description

$STR

Input

STRING

Specifies the base string within which you want to retrieve another partial string that starts after $SKIP

$SKIP

Input

INTEGER

Specifies the number of characters to skip in the base string before $NEWSTR begins

$LEN

Input

INTEGER

Specifies the length of $NEWSTR

$NEWSTR

Output

STRING

Retrieved string

Use the substring/4 function to retrieve part of the string $STR into $NEWSTR. The retrieved part of the string starts $SKIP characters from the start of $STR and is $LEN characters long.

substring/4 example

$MM = substring($YYYYMMDD,4,2);
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