If I'm thinking right, this should work...can someone help me
understand why it's not.
//$loop = 1
$test = "num$loop"; //test should now equal "num1"
$ttest = $$test; //ttest should now reference $num1
echo $test; //this echo DOES show "num1"
echo ${$ttest}; //this echo shows nothing (blank)
echo $num1; //this echo shows the contents of $num1
correctly.
What I'm doing is this: From a previous form I have outputted a bunch
of variables: $num1, $num2, $num3...$name1, $name2, $name3.
In my script I want to put in a loop a dynamic reference to each of
these...the step the loop is in will = the last digit in the variable.
What am I missing here? Can someone help?
Thanks,
Chris 2 1855
Chris wrote: If I'm thinking right, this should work...can someone help me understand why it's not.
//$loop = 1 $test = "num$loop"; //test should now equal "num1" $ttest = $$test; //ttest should now reference $num1 echo $test; //this echo DOES show "num1" echo ${$ttest}; //this echo shows nothing (blank) echo $num1; //this echo shows the contents of $num1 correctly.
What I'm doing is this: From a previous form I have outputted a bunch of variables: $num1, $num2, $num3...$name1, $name2, $name3.
In my script I want to put in a loop a dynamic reference to each of these...the step the loop is in will = the last digit in the variable.
What am I missing here? Can someone help?
Thanks, Chris
$num1 = 'hello';
$loop = 1;
$test = "num$loop"; //test should now equal "num1"
$ttest = $$test; //ttest should now reference $num1
echo $test; //this echo DOES show "num1"
echo $ttest; //this echo shows "hello"
echo $num1"; //this echo shows the contents of $num1
This works as intended. Your error was in this line:
echo ${$ttest}; //this echo shows nothing (blank)
$ttest is already referencing another variable. You don't need to
reference it again. In essence, you were echoing $$num1, which, as you
know, is a reference to whatever $num1 is referencing, which is nothing.
In this example, $ttest = $num1 and not $$num1 (which is what you
were trying to echo).
Hope that was clear.
-Jay
> This works as intended. Your error was in this line: > echo ${$ttest}; //this echo shows nothing (blank)
$ttest is already referencing another variable. You don't need to reference it again. In essence, you were echoing $$num1, which, as you know, is a reference to whatever $num1 is referencing, which is nothing. In this example, $ttest = $num1 and not $$num1 (which is what you were trying to echo).
Hope that was clear.
-Jay
AHH....thanks Jay. I see what you are saying and it does make sense! :-)
Thanks,
Chris This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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