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Full Discussion: Reading multiple variables in a loop
Top Forums UNIX for Dummies Questions & Answers Reading multiple variables in a loop Post 302953334 by bakunin on Thursday 27th of August 2015 05:49:08 AM
Old 08-27-2015
Quote:
Originally Posted by shash
Thanks bakunin. The issue is the variable will be in the following format:
Why? If it is a variable you can define it in any way you want, no?

Or is it some external input you need to use? In this case: how did it get into this variable? Perhaps there is a better way to put it in more suitably formed variables. You might want to present the whole problem, not just an arbitrary part of it.

Quote:
Originally Posted by shash
Code:
table_name=table1,table2,table3
col_name=col1,col2,col3

In this case how to use the array please?
The following is not pretty and less readable than my original idea, but there you go:

Code:
#! /bin/ksh

table_name="table1,table2,table3"
col_name=col1,col2,col3
table=""
col=""

while [ "$table_name" != "" ] ; do
     table="${table_name%%,*}"
     col="${col_name%%,*}"

     echo "TABLE: $table    COL: $col"

     table_name="${table_name##${table}}"
     col_name="${col_name##${col}}"
     table_name="${table_name##,}"
     col_name="${col_name##,}"
done

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
shash
 

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LEARN ABOUT PHP

pg_meta_data

PG_META_DATA(3) 														   PG_META_DATA(3)

pg_meta_data - Get meta data for table

SYNOPSIS

       array pg_meta_data (resource  $connection, string  $table_name, [bool  $extended])

DESCRIPTION

       pg_meta_data(3) returns table definition for table_name as an array.

PARAMETERS

	      o $connection
		- PostgreSQL database connection resource.

	      o $table_name
		- The name of the table.

	      o $extended
		- Flag for returning extended meta data. Default to FALSE.

RETURN VALUES

	An array of the table definition, or FALSE on error.

EXAMPLES

       Example #1

	      Getting table metadata

	      <?php
		$dbconn = pg_connect("dbname=publisher") or die("Could not connect");

		$meta = pg_meta_data($dbconn, 'authors');
		if (is_array($meta)) {
		    echo '<pre>';
		    var_dump($meta);
		    echo '</pre>';
		}
	      ?>

	      The above example will output:

	      array(3) {
	      ["author"]=>
	      array(5) {
		["num"]=>
		int(1)
		["type"]=>
		string(7) "varchar"
		["len"]=>
		int(-1)
		["not null"]=>
		bool(false)
		["has default"]=>
		bool(false)
	      }
	      ["year"]=>
	      array(5) {
		["num"]=>
		int(2)
		["type"]=>
		string(4) "int2"
		["len"]=>
		int(2)
		["not null"]=>
		bool(false)
		["has default"]=>
		bool(false)
	      }
	      ["title"]=>
	      array(5) {
		["num"]=>
		int(3)
		["type"]=>
		string(7) "varchar"
		["len"]=>
		int(-1)
		["not null"]=>
		bool(false)
		["has default"]=>
		bool(false)
	      }
	      }

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.6.0	|						    |
       |	|						    |
       |	|  No  longer  experimental.  Added  "is  enum"  as |
       |	| default attribute. $extended flag is added.	    |
       |	|						    |
       +--------+---------------------------------------------------+
SEE ALSO

       pg_convert(3).

PHP Documentation Group 													   PG_META_DATA(3)
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