[xVIP3Rx]

With your code, it gives me spaces instead of litters
test code:

pawn Код:

public OnPlayerText(playerid, text[])
{
    SendClientMessage(playerid, -1, strlower(text));
    return 0;
}
stock strlower(string[])
{
    for(new i; i<strlen(string); i++) string[i] = tolower(string[i]);

    return string;
}

Those work, tested, one returns the string and one doesn't.

pawn Код:

#define strlower(%1)        for(new i; i<strlen(%1); i++) %1[i] = tolower(%1[i])

public OnPlayerText(playerid, text[])
{
    strlower(text);
    return 1;
}

pawn Код:

public OnPlayerText(playerid, text[])
{
    SendClientMessage(playerid, -1, strlower(text));
    return 0;
}
stock strlower(string[])
{
    new tempstring[MAX_PLAYER_NAME];

    for(new i; i<strlen(string); i++) tempstring[i] = tolower(string[i]);

    return tempstring;
}