lr_paramarr_len

Returns the number of elements in a parameter array.

int lr_paramarr_len( const char * paramArrayName); 

Arguments

lr_paramarr_len returns the number of elements in a parameter array.

Return Values

The length of the array. On error, returns -1. If the parameter is not an array, returns 0.

Parameterization

Standard parameterization is not available for this function.

See Also

Example

This example shows how to get the last value from a parameter array.

int arrSize;
int ord;
char * FlightVal;
web_reg_save_param("outFlightVal", 
    "LB=outboundFlight value=", "RB=>", 
    "ORD=ALL", 
    "SaveLen=18", 
    LAST ); 
web_submit_form("reservations.pl", 
    "Snapshot=t4.inf", 
    ITEMDATA, 
    "Name=depart", "Value=London", ENDITEM, 
    "Name=departDate", "Value=08/16/2015", ENDITEM, 
    "Name=arrive", "Value=New York", ENDITEM, 
    "Name=returnDate", "Value=08/16/2015", ENDITEM, 
    "Name=numPassengers", "Value=1", ENDITEM, 
    "Name=roundtrip", "Value=<OFF>", ENDITEM, 
    "Name=seatPref", "Value=None", ENDITEM, 
    "Name=seatType", "Value=Coach", ENDITEM, 
    "Name=findFlights.x", "Value=83", ENDITEM, 
    "Name=findFlights.y", "Value=16", ENDITEM, 
    LAST );  

Example: The result of the web_reg_save_param having been called before the web_submit_form is:
        Notify: Saving Parameter "outFlightVal_1 = 230;378;08/16/2015" 
        Notify: Saving Parameter "outFlightVal_2 = 231;337;08/16/2015" 
        Notify: Saving Parameter "outFlightVal_3 = 232;357;08/16/2015" 
        Notify: Saving Parameter "outFlightVal_4 = 233;309;08/16/2015"
        Notify: Saving Parameter "outFlightVal_count = 4" 

arrSize = lr_paramarr_len("outFlightVal");
FlightVal = lr_paramarr_idx("outFlightVal", arrSize);

Example: Output: FlightVal contains the value "233;309;08/16/2015".

// Submit a unique web request for each FlightVal in the Parameter array
    for (ord=1; ord <= arrSize; ++ord) {
        lr_save_string (lr_paramarr_idx("outFlightVal", ord), "flighVal");
    
        web_url("reservations.lookup",
            "URL=http://{host}/reservations/lookup?resvKey={flighVal}", 
            "Resource=0", 
            "RecContentType=text/html", 
            "Referer=", 
            "Mode=HTML", 
            LAST);
    }
 

Example: 
    Requests will be made to:
    http://{host}/reservations/lookup?resvKey=230;378;08/16/2015
    http://{host}/reservations/lookup?resvKey=231;337;08/16/2015
    http://{host}/reservations/lookup?resvKey=232;357;08/16/2015
    http://{host}/reservations/lookup?resvKey=233;309;08/16/2015