Convert any array to string ( single value )

array2val.php

<?php

    /**
     * Convert array/nested-array to single value
     * @param   mixed $arg
     * @author  Mohammed Al Ashaal
     * @license MIT License
     * @return  string
     */
    function array2val($arg)
    {
        $r = array_values((array) $arg);
        $v = null;

        for( $i = 0, $c = count($r); $i < $c; ++ $i )
        {
            if ( is_array($r[$i]) || is_object($r[$i]) )
            {
                return (string) call_user_func(__FUNCTION__, (array) $r[$i]);
            }
            else
            {
                return (string) $r[$i];
            }
        }
    }

    // -----------------------------

    /**
     * Convert array/nseted-array to single value
     * @see     array2val()
     * @param   mixed $arg
     * @author  Mohammed Al Ashaal
     * @license MIT License
     * @return  void
     */
    function array2val_byref(&$arg)
    {
        $arg = array2val($arg);
    }