MID¶

Returns a substring from the middle of a string.

Signature¶

    ┌─────────┐
IN ─┤         │
 L ─┤   MID   ├─ OUT
 P ─┤         │
    └─────────┘

FUNCTION MID : ANY_STRING
  VAR_INPUT
    IN : ANY_STRING;
    L  : ANY_INT;
    P  : ANY_INT;
  END_VAR
END_FUNCTION

The return type matches the type of IN. MID accepts STRING for IN; L and P are INT.

Inputs

Name	Type	Description
`IN`	`ANY_STRING`	The source string.
`L`	`INT`	Number of characters to extract.
`P`	`INT`	Starting position (1-based).

Outputs

Name	Type	Description
Return value	`ANY_STRING`	L characters from IN starting at position P. Same type as IN.

MID(IN, L, P) returns L characters from IN starting at position P. Positions are 1-based: the first character is at position 1.

Try it

Source

result := MID('Hello World', 5, 1);   (* result = 'Hello' *)
result := MID('Hello World', 5, 7);   (* result = 'World' *)