Variable names within array call Post: 302278168

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Top Forums Shell Programming and Scripting Variable names within array call Post 302278168 by vockleya on Monday 19th of January 2009 03:39:08 PM

01-19-2009

Registered User

Variable names within array call

I am trying to write a piece of code that will call a value from an array. There are multiple arrays that I need to call data from. Only one array needs to be used based on the step within the program. The arrays have the names "cue_0", "cue_1", and so on.

I can't figure out how to call a value from an array based on the array number (the one after the underscore) and the position within the array. I have been able to get it working when not using a variable in the array name, but putting a variable within the array name makes it stop working. I get an error that says "bad substitution" about the line of code noted below when I replace the "0" with a variable.

The code below is the part of my script that I am having trouble with. Any help would be greatly appreciated.

Code:

for i in `seq 0 23`; do
     let position=i*4+9
     tput cup 1 $position
     case ${cue_0[$i]} in      # I want to replace the "0" in this line with a variable"
          0) printf "off" ;;
          1) printf "on" ;;
     esac
done

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LEARN ABOUT PHP

array_intersect

ARRAY_INTERSECT(3)							 1							ARRAY_INTERSECT(3)

array_intersect - Computes the intersection of arrays

SYNOPSIS

       array array_intersect (array  $array1, array  $array2, [array  $...])

DESCRIPTION

       array_intersect(3)  returns  an	array  containing all the values of $array1 that are present in all the arguments. Note that keys are pre-
       served.

PARAMETERS

	      o $array1
		- The array with master values to check.

	      o $array2
		- An array to compare values against.

	      o $...
		- A variable list of arrays to compare.

RETURN VALUES

	Returns an array containing all of the values in $array1 whose values exist in all of the parameters.

EXAMPLES

       Example #1

	      array_intersect(3) example

	      <?php
	      $array1 = array("a" => "green", "red", "blue");
	      $array2 = array("b" => "green", "yellow", "red");
	      $result = array_intersect($array1, $array2);
	      print_r($result);
	      ?>

	      The above example will output:

	      Array
	      (
		  [a] => green
		  [0] => red
	      )

NOTES

       Note

	       Two elements are considered equal if and only if (string) $elem1 === (string) $elem2. In words: when the string	representation	is
	      the same.

SEE ALSO

       array_intersect_assoc(3), array_diff(3), array_diff_assoc(3).

PHP Documentation Group 													ARRAY_INTERSECT(3)