Re: values from text boxes
| From: | Richard Lynch | Date: | Sat, 24 Mar 2001 00:53:27 +0000 |
| Subject: | Re: values from text boxes | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-45385@lists.php.net to get a copy of this message | ||
> do I have to cast values from text boxes into ints?
Not usually, because PHP and MySQL take care of converting for you, 99.9999%
of the time.
But what you get from a FORM (or a GET URL) are all strings. The HTTP spec
doesn't have any way to distinguish one data type from another. It's all
strings.
> If so, it's wierd, because I have taken the values from text inputs
> before
> and just put them into insert string statements for mysql. It turned
> them
> into ints just fine.
Actually, PHP didn't turn them into ints in that case -- MySQL did.
> I use the following code to MAKE a table of input boxes on the screen,
> and the exact
> same thing to READ it after submission.
>
> the value $$vent_flow_identifier comes back with the entered value, but
> as a string.
I'm not finding the actual problem here...
Can you pin-point it for us?
> and example of the names of the INPUT boxes out and comes back is:
> Vent1MinFlow
> Vent1MaxFlow
> Vent2FixedFlow
> The '1' and the 'xxxFlow' are from columns in a set of tables.
>
> <code>
> //$room_vent_values are a two colomn result in an array of length2
> arrays
> //for the vents in a room, numbered 1..vents_in_the_room
> //functions of vents are supply, return, exhaust
> //A supply vent has a MaxFlow, and a MinFlow, Returns and Exhausts have
> a Fixed Flow
> //Those allowable flows are in $allowed_ventflowtype_values, indexed by
> the
> //Vent functionID
>
>
>
> while ( list( $this_vent_num, $this_vent_functionID) = each(
> $room_vent_values )){
> $alt_bgcolor="";
> if ( $this_vent_num % 2 ) $alt_bgcolor = "bgcolor=\"#E69B9F\"";
> // causes alternating colors in odd/even vent numbers
> echo("<br>\n");
> reset( $allowed_ventflowtype_values );
> while ( $vent_function_flow_array = each(
> $allowed_ventflowtype_values )){
> $flow_type_vent_functionID = $vent_function_flow_array[1][0];
> $flow_type = $vent_function_flow_array[1][1];
> if ( $this_vent_functionID == $flow_type_vent_functionID ){
> $vent_function_name =
> $vent_function_values[$this_vent_functionID];
> $vent_flow_identifier = "Vent" . $this_vent_num .
> $flow_type;
> //start of row for output table, only the <input ...> is
> entered by user
> // the rest is from a database retrieval and fill in.
> $flow_entry_table .= " <tr $alt_bgcolor>\n";
> $flow_entry_table .= " <td
> align=\"center\"> $this_vent_num </td>\n";
> $flow_entry_table .= " <td
> align=\"center\"> $vent_function_name </td>\n";
> $flow_entry_table .= " <td
> align=\"center\"> $flow_type </td>\n";
> $flow_entry_table .= " <td
> align=\"center\"> <INPUT
> type=\"text\" name =\"$vent_flow_identifier\"
> size=\"5\"> </td>\n";
> $flow_entry_table .= " </tr>\n";
> }
> }
> }
> </end_code>
>
> The form that this makes, and later tests the results of looks like:
> <html out>------------
> <form name="Entry"
> action="FlowReadingsEntryTable.php"
> method="POST">
> <INPUT type="hidden" name="FlowDataSubmitted" value="1">
> <!--name of
> event submission of this table results in-->
> <INPUT type="hidden" name="PurvineRoomID" value="1">
> <!--relevant room
> passed through from prevouos form-->
> <INPUT type="submit" value="Send This Puppy">
> <table BORDER="0" CELLSPACING="0" COLS="4"
> width="100"
> BGCOLOR="#FF5c5c">
> <tr><!-- THIS ROW sets column widths -->
> <td WIDTH="85" height="0"></td>
> <td WIDTH="85" height="0"></td>
> <td WIDTH="85" height="0"></td>
> <td WIDTH="85" height="0"></td>
> </tr>
> <!-- Heading Row -->
> <tr>
> <td colspan="4" align="center" nowrap><b><b>Enter
> Flow For Each
> Vent<br>And Appropriate Flow Type<br>Date will be The Current
> Date/Time</b><br> </td>
> </tr>
> <tr>
> <td align="left"
> colspan="4">PurvineRoom<br>Designation </td>
> </tr>
> <tr>
> <td align="left" colspan="4">
> <b>101</b><br> </td>
> </tr>
> <tr valign"bottom">
> <td align="center"> Vent<br>Num </td>
> <td align="center"> Vent<br>Function </td>
> <td align="center"> Flow<br>Type </td>
> <td align="center"> Flow<br>Value </td>
> </tr>
> <tr bgcolor="#E69B9F">
> <td align="center"> 1 </td>
> <td align="center"> Supply </td>
> <td align="center"> MinFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent1MinFlow"
> size="5"> </td>
> </tr>
> <tr bgcolor="#E69B9F">
> <td align="center"> 1 </td>
> <td align="center"> Supply </td>
> <td align="center"> MaxFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent1MaxFlow"
> size="5"> </td>
> </tr>
> <tr >
> <td align="center"> 2 </td>
> <td align="center"> Supply </td>
> <td align="center"> MinFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent2MinFlow"
> size="5"> </td>
> </tr>
> <tr >
> <td align="center"> 2 </td>
> <td align="center"> Supply </td>
> <td align="center"> MaxFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent2MaxFlow"
> size="5"> </td>
> </tr>
> <tr bgcolor="#E69B9F">
> <td align="center"> 3 </td>
> <td align="center"> Supply </td>
> <td align="center"> MinFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent3MinFlow"
> size="5"> </td>
> </tr>
> <tr bgcolor="#E69B9F">
> <td align="center"> 3 </td>
> <td align="center"> Supply </td>
> <td align="center"> MaxFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent3MaxFlow"
> size="5"> </td>
> </tr>
> <tr >
> <td align="center"> 4 </td>
> <td align="center"> Supply </td>
> <td align="center"> MinFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent4MinFlow"
> size="5"> </td>
> </tr>
> <tr >
> <td align="center"> 4 </td>
> <td align="center"> Supply </td>
> <td align="center"> MaxFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent4MaxFlow"
> size="5"> </td>
> </tr>
> <tr bgcolor="#E69B9F">
> <td align="center"> 5 </td>
> <td align="center"> Return </td>
> <td align="center"> FixedFlow </td>
> <td align="center"> <INPUT type="text" name
> ="Vent5FixedFlow"
> size="5"> </td>
> </tr>
>
> </table>
> </form>
> </html out>-----------
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