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Full Discussion: evaluating variables
Top Forums UNIX for Dummies Questions & Answers evaluating variables Post 56620 by zazzybob on Wednesday 6th of October 2004 11:51:34 AM
Old 10-06-2004
Ah, I see.

How's about
Code:
#!/usr/bin/ksh

counter=1
cmd="awk"
field1="Fred"
field2="Joe"
field3="Mary"
field4="Jane"


while [ $counter -le 4 ]
do
field=field$counter
eval field=\$$field
cmd=$cmd" -vvar$counter=${field}"

(( counter = counter + 1 ))
done

echo $cmd

We get back
awk -vvar1=Fred -vvar2=Joe -vvar3=Mary -vvar4=Jane
from the "echo $cmd" line

EDIT: Looks like me and Perderabo were replying simultaneously!

Cheers
ZB
 

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GET_CLASS_VARS(3)							 1							 GET_CLASS_VARS(3)

get_class_vars - Get the default properties of the class

SYNOPSIS
array get_class_vars (string $class_name) DESCRIPTION
Get the default properties of the given class. PARAMETERS
o $class_name - The class name RETURN VALUES
Returns an associative array of declared properties visible from the current scope, with their default value. The resulting array elements are in the form of varname => value. In case of an error, it returns FALSE. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.0.3 | | | | | | | get_class_vars(3) will only return the properties | | | that can be accessed from the current scope. | | | | | 5.0.2 | | | | | | | Calling get_class_vars(3) will now expose all | | | the properties as an array, unlike previous be- | | | haviour where protected and private properties | | | were prefixed with nul bytes. | | | | | 5.0.1 | | | | | | | Calling get_class_vars(3) will expose all prop- | | | erties, as when converting an object to a class. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 get_class_vars(3) example <?php class myclass { var $var1; // this has no default value... var $var2 = "xyz"; var $var3 = 100; private $var4; // constructor function myclass() { // change some properties $this->var1 = "foo"; $this->var2 = "bar"; return true; } } $my_class = new myclass(); $class_vars = get_class_vars(get_class($my_class)); foreach ($class_vars as $name => $value) { echo "$name : $value "; } ?> The above example will output: var1 : var2 : xyz var3 : 100 Example #2 get_class_vars(3) and scoping behaviour <?php function format($array) { return implode('|', array_keys($array)) . " "; } class TestCase { public $a = 1; protected $b = 2; private $c = 3; public static function expose() { echo format(get_class_vars(__CLASS__)); } } TestCase::expose(); echo format(get_class_vars('TestCase')); ?> The above example will output: // 5.0.0 a| * b| TestCase c a| * b| TestCase c // 5.0.1 - 5.0.2 a|b|c a|b|c // 5.0.3 + a|b|c a SEE ALSO
get_class_methods(3), get_object_vars(3). PHP Documentation Group GET_CLASS_VARS(3)
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