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Full Discussion: Local variable in functions (gawk)
Top Forums Shell Programming and Scripting Local variable in functions (gawk) Post 302929912 by Scrutinizer on Sunday 28th of December 2014 11:26:54 PM
Old 12-29-2014
If you just specify a variable inside an awk function, it becomes a global variable.

In awk you can make the variable "k" local to the function by putting it in the function header. The convention (for readability of your code) is to use a TAB character or extra spaces between the parameters and the local variables. You then call the function using only the parameter before the TAB, like so:
Code:
function quita_ceros(cad,      k)

You then call the function like this:
Code:
quita_ceros(var1)

then the cad variable is local, call by value and the k variable is not called and is just local to the function..
 

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LEARN ABOUT PHP

session_unregister

SESSION_UNREGISTER(3)							 1						     SESSION_UNREGISTER(3)

session_unregister - Unregister a global variable from the current session

SYNOPSIS

       bool session_unregister (string	$name)

DESCRIPTION

       session_unregister(3) unregisters the global variable named $name from the current session.

       Warning

	      This function has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.

PARAMETERS

	      o $name
		- The variable name.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

NOTES

       Note

	       If  $_SESSION  (or  $HTTP_SESSION_VARS  for  PHP  4.0.6	or  less)  is  used, use unset(3) to unregister a session variable. Do not
	      unset(3)$_SESSION itself as this will disable the special function of the $_SESSION superglobal.

       Caution

	       This function does not unset the corresponding global variable for $name, it only prevents the variable from being saved as part of
	      the session. You must call unset(3) to remove the corresponding global variable.

       Caution

	       If  you	are using $_SESSION (or $HTTP_SESSION_VARS), do not use session_register(3), session_is_registered(3) and session_unregis-
	      ter(3).

PHP Documentation Group 												     SESSION_UNREGISTER(3)
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