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Full Discussion: Using dynamic arrays to extract the values
Top Forums Shell Programming and Scripting Using dynamic arrays to extract the values Post 302582468 by sanjaydubey2006 on Friday 16th of December 2011 04:19:40 AM
Old 12-16-2011
Using dynamic arrays to extract the values
Hi all,
We have requirement to generate load timing based on subject areas HOUSEHOLD, BANKING and TRADING. These values are stored in an array SUB_ARR
Code:
SUB_ARR=("HOUSEHOLD" "BANKING" "TRADING")

Based on indicator files produced while processing data for each type, we need to get the stats (using stats -c "%y") of when file was generated. These file names are again stored in array.

Code:
HOUSEHOLD_LIST=("HH1_FILE" "HH2_FILE" "HH3_FILE" "HH4_FILE")

similalry BANKING_LIST and TRADING_LIST

my requirement is dynamically fetch the values of LIST for each SUB_ARR value as below :

Code:
for i in ${SUB_ARR[@]}
do
  SUB_LIST=$i'_LIST'   
  <next_code_lines>
done

In next code lines, now my requirement is to fetch the values for <SUB>_LIST and assign it to variables.
eg for first iteration
SUB_LIST=$i'_LIST' would be HOUSEHOLD_LIST.
now i want to extract the value of HOUSEHOLD_LIST[0] and assign it to a varaible by modifying SUB_LIST in some way.
I tried out many ways but unsuccessful.

Would someone please provide any assistance?
Any help is apprecated.

Thanks
Sam
Last edited by Scott; 12-17-2011 at 08:30 AM.. Reason: Code tags, please...
 

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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)
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