SAP STRING_LENGTH Function Module for (Onsolete) Calculate the length of a string
STRING_LENGTH is a standard string length SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for (Onsolete) Calculate the length of a string processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.
See here to view full function module documentation and code listing for string length FM, simply by entering the name STRING_LENGTH into the relevant SAP transaction such as SE37 or SE38.
Function Group: CSTR
Program Name: SAPLCSTR
Main Program: SAPLCSTR
Appliation area:
Release date: 22-May-1995
Mode(Normal, Remote etc): Normal Function Module
Update:

Function STRING_LENGTH pattern details
In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.CALL FUNCTION 'STRING_LENGTH'"(Onsolete) Calculate the length of a string.
EXPORTING
STRING = "String
IMPORTING
LENGTH = "Length of the string
IMPORTING Parameters details for STRING_LENGTH
STRING - String
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
EXPORTING Parameters details for STRING_LENGTH
LENGTH - Length of the string
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
Copy and paste ABAP code example for STRING_LENGTH Function Module
The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.| DATA: | ||||
| lv_length | TYPE STRING, " | |||
| lv_string | TYPE STRING. " |
|   CALL FUNCTION 'STRING_LENGTH' "(Onsolete) Calculate the length of a string |
| EXPORTING | ||
| STRING | = lv_string | |
| IMPORTING | ||
| LENGTH | = lv_length | |
| . " STRING_LENGTH | ||
ABAP code using 7.40 inline data declarations to call FM STRING_LENGTH
The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.Search for further information about these or an SAP related objects