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Top Forums Web Development Php help to copy form field if empty Post 302918289 by barrydocks on Monday 22nd of September 2014 04:34:38 PM
Old 09-22-2014
Php help to copy form field if empty

I have an input form with several fields. What I would like to achieve is to auto populate or copy certain fields if they are empty when the form is submitted. I would like to use php if not then javascript but not jquery if possible - I have sort of had a go but I really have no idea Smilie

The bit of logic I need is:
If rNradd is empty then do nothing;
If rNradd and rVprism contain data and rNrVprism is empty then copy rVprism to rNrVprism;
If rNrVprism already contains data then do nothing.

There are a few other fields I need to do this for at the same time so I need the solution to be expandable.


Here is the section of code in question (written in DW - please do not be too derogatory):
Code:
 $insertSQL = sprintf("INSERT INTO spec_rx (spec_rx_id, FK_px_id, spec_rx_date, FK_user_id, spec_rx_rsph, spec_rx_rcyl, spec_rx_raxis, spec_rx_rhprism, spec_rx_rhprismbase, spec_rx_rvprism, spec_rx_rvprismbase, spec_rx_rnadd, spec_rx_rnhprism, spec_rx_rnhprismbase, spec_rx_rnvprism, spec_rx_rnvprismbase, spec_rx_rintadd, spec_rx_rinthprism, spec_rx_rinthprismbase, spec_rx_rintvprism, spec_rx_rintvprismbase, spec_rx_lsph, spec_rx_lcyl, spec_rx_laxis, spec_rx_lhprism, spec_rx_lhprismbase, spec_rx_lvprism, spec_rx_lvprismbase, spec_rx_lintadd, spec_rx_linthprism, spec_rx_linthprismbase, spec_rx_lintvprism, spec_rx_lintvprismbase, spec_rx_lnadd, spec_rx_lnhprism, spec_rx_lnhprismbase, spec_rx_lnvprism, spec_rx_lnvprismbase, ext_rx) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)",
                       GetSQLValueString($_POST['SpecRxID'], "int"),
                       GetSQLValueString($_POST['pxID'], "int"),
                       GetSQLValueString($_POST['specRxDate'], "date"),
                       GetSQLValueString($_POST['userID'], "int"),
                       GetSQLValueString($_POST['rsph'], "double"),
                       GetSQLValueString($_POST['rcyl'], "double"),
                       GetSQLValueString($_POST['raxis'], "double"),
                       GetSQLValueString($_POST['rHprism'], "double"),
                       GetSQLValueString($_POST['rHprismbase'], "text"),
                       GetSQLValueString($_POST['rVprism'], "double"),
                       GetSQLValueString($_POST['rVprismbase'], "text"),
                       GetSQLValueString($_POST['rNradd'], "double"),
                       GetSQLValueString($_POST['rNrHprism'], "double"),
                       GetSQLValueString($_POST['rNrHprismbase'], "text"),
                       GetSQLValueString($_POST['rNrVprism'], "double"),

I have tried to add the following code without success:
Code:
    extract ($_POST);
    if (empty($_POST['$rNrVprism']) && !empty($_POST['$rNradd']) && !empty($_POST['$rVprism'])){
        $_POST['$rNrVprism'] = '$rVprism';
    }

I would really be grateful for some help Smilie
 

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_REQUEST(3)								 1							       _REQUEST(3)

$_REQUEST - HTTP Request variables

	An associative array that by default contains the contents of $_GET, $_POST and $_COOKIE.

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|  Introduced request_order. This directive affects |
       |	| the contents of $_REQUEST.			    |
       |	|						    |
       | 4.3.0	|						    |
       |	|						    |
       |	|  $_FILES information was removed from $_REQUEST.  |
       |	|						    |
       | 4.1.0	|						    |
       |	|						    |
       |	|		Introduced $_REQUEST.		    |
       |	|						    |
       +--------+---------------------------------------------------+
       Note

	      This is a 'superglobal', or automatic global, variable. This simply means that it is available in all scopes  throughout	a  script.
	      There is no need to do global $variable; to access it within functions or methods.

       Note

	       When running on the command line , this will not include the argv and argc entries; these are present in the $_SERVER array.

       Note

	       The  variables  in $_REQUEST are provided to the script via the GET, POST, and COOKIE input mechanisms and therefore could be modi-
	      fied by the remote user and cannot be trusted. The presence and order of variables listed in this array is defined according to  the
	      PHP variables_order configuration directive.

       import_request_variables(3), Handling external variables, The filter extension.

PHP Documentation Group 													       _REQUEST(3)
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