MyChat Scripts: function mDBStorageKeyExists, check the existence of the specified key

Function to check the existence of the specified key in the built-in database of MyChat Server.

Syntax

function mDBStorageKeyExists(sKey: string): boolean;

Parameters and return values

Parameter	Type	Value
sKey	string	text key for search. The letter case matters.

Function result

True, if the key exists, false such key does not exist or you specified the key with empty name.

Example

const
TOTAL = 12;
var
i, iCount: integer;
sKey: string;
begin
iCount := 0;

for i := 1 to TOTAL do begin
sKey := 'month_name_' + IntToStr(i);

if mDBStorageKeyExists(sKey) then inc(iCount);
end;

if iCount > 0 then mLogScript('Total ' + IntToStr(iCount) + ' keys found', '')
else mLogScript('Keys are not found', '');
end.

Script work result

[20:11:55] (Log "DBStorageKeyExists"): Total 12 keys found

[20:11:55] (Run "DBStorageKeyExists"): Script operation time: 10 ms

[20:11:55] (Run "DBStorageKeyExists"): Script done successfully.

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