Echo a value from an array based on function parameters

Question

I need to be able to echo a value from a private property in one of my classes if a method is called within the class. It's a little tricky to explain so let me demostrate and hopefully someone can fill in the blank for me :)

     <?php
     class test {
          private $array['teachers']['classes'][23] = "John";


             public function __construct($required_array) {

                 $this->array['teachers']['classes'][23] = "John";
                 $this->array['students'][444] = "Mary";
                 $this->echo_array($required_array);

             }
             public function echo_array($array) {

                     // Echo the value from the private $this->array;
                     // remembering that the array I pass can have either 
                     // 1 - 1000 possible array values which needs to be 
                     // appended to the search. 

             }
     }

     // Getting the teacher:     
     $test = new test(array('teachers','classes',23));

     // Getting the student:     
     $test = new test(array('students',444));

?>

Is this possible?

Supericy · Accepted Answer · 2013-01-20 20:15:17Z

3

$tmp = $this->array;
foreach ($array as $key) {
    $tmp = $tmp[$key];
}
// $tmp === 'John'
return $tmp; // never echo values but only return them

edited Jan 20, 2013 at 20:15

Supericy

5,8911 gold badge23 silver badges25 bronze badges

answered Jan 20, 2013 at 19:58

Your Common Sense

158k42 gold badges226 silver badges374 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Kerem · Accepted Answer · 2013-01-21 15:28:39Z

0

An other approach to get value;

class Foo {
    private $error = false,
            $stack = array(
        'teachers' => array(
            'classes' => array(
                23 => 'John',
                24 => 'Jack',
            )
        )
    );

    public function getValue() {
        $query  = func_get_args();
        $stack  = $this->stack;
        $result = null;
        foreach ($query as $i) {
            if (!isset($stack[$i])) {
                $result = null;
                break;
            }
            $stack  = $stack[$i];
            $result = $stack;
        }

        if (null !== $result) {
            return $result;
        }
        // Optional
        // trigger_error("$teacher -> $class -> $number not found `test` class", E_USER_NOTICE);
        // or
        $this->error = true;
    }

    public function isError() {
        return $this->error;
    }
}

$foo = new Foo();
$val = $foo->getValue('teachers', 'classes', 24); // Jack
// $val = $foo->getValue('teachers', 'classes'); // array: John, Jack
// $val = $foo->getValue('teachers', 'classes', 25); // error
if (!$foo->isError()) {
    print_r($val);
} else {
    print 'Value not found!';
}

edited Jan 21, 2013 at 15:28

answered Jan 20, 2013 at 20:35

Kerem

11.6k5 gold badges61 silver badges58 bronze badges

3 Comments

mauzilla Over a year ago

although this would work, what im trying to achieve is to get a single value from row in the array, so not bound to specifically 1 fixed set of inputs. So I need to be able to return for example $this->stack['students'][23] as well which would then fail because of my parameters not matching.

Kerem Over a year ago

Ok, see changes in getValue.

mauzilla Over a year ago

Great work, I would have never through about it that way :) I want to say that the question may be in vain as I was trying to get an answer for y before considering that the problem may be with x, but it's a good resource for someone else in the future with the same issue. Thanks again :)

Collectives™ on Stack Overflow

Echo a value from an array based on function parameters

2 Answers 2

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related