helpers.php

<php 
class helper {

	//is_array & is associative array
	public function is_array_asso($a) {
		return $this->is_asso($a, 1);
	}
	
	// is associative array
	public function is_asso($a, $strict = FALSE) {
		if($strict && !is_array($a)){
			return false;
		}
		foreach(array_keys($a) as $key){
			if (is_string($key)) {
				return true;
			}
		}
		return false;
	}
	
	
	// Object to array (visibility and namespace removal)
	public function obj_to_array($d){

		$array = array();
		if (is_object($d)) {
		    foreach ((array)$d as $k => $v) {
		    	$k = preg_match('/^\x00(?:.*?)\x00(.+)/', $k, $matches) ? $matches[1] : $k;
	            $array[$k] = $this->obj_to_array($v);
	        }
	        return $array;
		} else if (is_array($d)) {
		    foreach ($d as $k => $v) {
	            $array[$k] = $this->obj_to_array($v);
	        }
	        return $array;
	    }
	    return $d;
	}

	public function autofix_json_encode($array){

		if(is_object($array)){
			$array = $this->obj_to_array($array);
		}

		$json = json_encode($array);
		
		switch (json_last_error()) {
	        case JSON_ERROR_NONE:
	            return $json;
	        break;
	        case JSON_ERROR_DEPTH:
	            echo ' - Maximum stack depth exceeded';
	        break;
	        case JSON_ERROR_STATE_MISMATCH:
	            echo ' - Underflow or the modes mismatch';
	        break;
	        case JSON_ERROR_CTRL_CHAR:
	            echo ' - Unexpected control character found';
	        break;
	        case JSON_ERROR_SYNTAX:
	            echo ' - Syntax error, malformed JSON';
	        break;
	        case JSON_ERROR_UTF8:
	            return $this->autofix_json_encode($this->utf8ize($array));
	        break;
	        default:
	            echo ' - Unknown error';
	        break;
	    }
		return $json;
	}
	public function autofix_json_decode($json, $assoc = false, $depth = 512 , $options = 0 )
	{
		$array = json_decode($json, $assoc, $depth , $options);

		switch (json_last_error()) {
	        case JSON_ERROR_NONE:
	            return $array;
	        break;
	        case JSON_ERROR_DEPTH:
	            echo ' - Maximum stack depth exceeded';
	        break;
	        case JSON_ERROR_STATE_MISMATCH:
	            echo ' - Underflow or the modes mismatch';
	        break;
	        case JSON_ERROR_CTRL_CHAR:
	            echo ' - Unexpected control character found';
	        break;
	        case JSON_ERROR_SYNTAX:
	            return $this->autofix_json_decode(str_replace('\\', '\\\\', $json), $assoc, $depth , $options);
	        break;
	        case JSON_ERROR_UTF8:
	            return $this->autofix_json_decode($this->utf8ize($json), $assoc, $depth , $options);
	        break;
	        default:
	            echo ' - Unknown error';
	        break;
	    }
		return $array;
	}
	public function utf8ize($d) {
 
	    if (is_array($d)) {
	        foreach ($d as $k => $v) {
	            $d[utf8_encode($k)] = $this->utf8ize($v);
	        }
	    } elseif (is_object($d)) {
	        foreach ($d as $k => $v) {
	            $d->{utf8_encode($k)} = $this->utf8ize($v);
	        }
	    } else {
	        return utf8_encode($d);
	    }
	    return $d;
	}
}