Hi,
I am new to PHP and cant seem to find a way to parse a concatenated string
and variable.
To explain:
I have a database to catalogue a composers works, one of the tables has a
list of instruments which I then access to dynamically display on a wep page
using checkboxes - if a particular instrument is used in the work then the
checkbox is checked.
<?php
//Select all instruments from the instrumentTbl in the correct order
$resultInstrument = mysql_query("SELECT * FROM instrumentTbl ORDER BY
sort_order");
//Load them into an array
�if ($myrowInstrument = mysql_fetch_array($resultInstrument)) {
do {
echo $myrowInstrument['instrument'];
echo ": ";
?>
�
//This creates a checkbox for each instrument in the database
�<input name="<?php echo $myrowInstrument['instrument']; ?>"
type="checkbox" value="<?php echo $myrowInstrument['instrument']; ?>">
So far so good.
The problem I am having is when I want to insert the number of instruments
used in the work.
<input name="<?php echo $myrowInstrument['instrument']; ?>number"
type="text" size="3">
This snipet of code produces a dynamically created form where the user can
enter the number of instruments required. (Ie 2 flutes)��
Here is a part of the form created from the code above for the instrument
Flute:
<input name="Flutenumber" type="text" size="3">
To process the information in this form I think I need to concatenate
$instrument with the string 'number'.��the only problem is that PHP reads
this literally and the output is just $Flutenumber and not the number
actually entered.
Here is the code I have at the moment
<?php
$resultInstrument_id = mysql_query("SELECT * FROM instrumentTbl ORDER BY
sort_order");
����while ($myrowInstrument_id = mysql_fetch_array($resultInstrument_id))
����{
����$instrument = $myrowInstrument_id['instrument'];
if (strlen ($$instrument !='0'))
��{
//this works fine and gives a list of all the checked instruments
print $$instrument;
//this just outputs the literal interpretation ie it will print
$Flutenumber not the actual number entered on the form.
print��"$${$instrument}number";
����}
}
?>
Any help would be greatly appreciated.
Thanks,
Paul.
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