GetStringIndex
From the Scripting Manual
function GetStringIndex(needle: string; haystack: array of string): integer Parameter Info: needle (String): String to search for. haystack (Array of String): Array of strings to search in. Description: This function will return the array index of (needle) if found in array (haystack).
Examples
var
MyArray: TStringArray;
begin
MyArray[0] := 'foo';
MyArray[1] := 'bar';
MyArray[2] := 'clan';
MyArray[3] := 'rox';
GetStringIndex('bar',MyArray); // 1
GetStringIndex('rox',MyArray); // 3
end;