php singleton class to read multidimensional array from txt file

[user12345]

I want to create a singleton class that read multidimensional array from txt file and flatten the array retrieved.

 

This is what I have tried so far:

 

    class singleton {

    

        protected static $instance = null;         

    

        public static function getInstance() {

            if (!isset(static::$instance)) {

                static::$instance = new static;

            }

            return static::$instance;

        }

        public static function flattenArray($array) {

      

            $return = array();

                    

            $iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($array));

    

            foreach ($iterator as $value) {

                $return[] = $value;

            }

            return $return;

        }

    

        public static function loadFile($path) {

    

            $file_handle = fopen($path, "r");

    

            while (!feof($file_handle)) {

    

                $line = fgets($file_handle);

    

                $rawarray[] = $line;

            }

    

            $flattedarray = self::flattenArray($rawarray);

                

            fclose($file_handle);

            return $flattedarray;

        }

 

    

With the txt file containing:

 

    array('a', 'b', array(array('c'), 'd'), 'e', array('f'), 'g')

 

I run the class with: 

 

    include 'singleton.php';

    

    $singleton = singleton::getInstance();

    

    $flattedarray = $singleton->loadFile("file.txt");

    

    echo '<pre>';

    print_r($flattedarray);

    echo'</pre>';

 

I get as a result:

 

    Array

    (

        [0] => array('a', 'b', array(array('c'), 'd'), 'e', array('f'), 'g')

    )

 

Which is the same array found in the txt file.

 

how can i do it without using eval.

 

What am I doing wrong ?

[Ch0cu3r]

PHP will not read the text file as PHP code. It will see it as just plain text.

 

If you need to save an array to a flat file, you should either serialise it or json_encode it. You then use unserialize or json_decode to read the array back into PHPs memory.

[Maq]

@OP, please use code tags when posting code.