array2objstr.php

<?php
/**
 * input:
 * $arr = array(
 *     'a' => array(
 *         'b' => array(
 *             'c' => 'bar'
 *         ),
 *         'x' => 'i',
 *     )
 * );
 * 
 * output:
 * a->b->c: bar
 * a->x: i 
 */
 
$arr = array(
    'a' => array(
        'b' => array(
            'c' => 'bar=='
        ),
        'x' => 'i',
    )
);

echo array2objstr($arr);

function array2objstr($arr)
{
    $str = http_build_query($arr);
    
    $strs = explode('&', $str);
    
    $objstr = '';
    foreach ($strs as $s)
    {
        list($key, $value) = explode('=', $s);
        $key = str_replace('][', '->', trim(urldecode($key), ']'));
        $key = str_replace('[', '->', $key);
    
        $objstr .= $key . ': ' . urldecode($value) . "\n";
    }
    
    return $objstr;
}