ช่วยแนะนำวิธีดึงค่าจาก อาเรย์ ซ้อนๆ กันมาแยกเก็บทีครับ

[0] => Array
        (
            [survey] => 1/56
            [gzone] => Array
                (
                    [0] => Array
                        (
                            [name] => testg
                            [zone] => Array
                                (
                                    [0] => Array
                                        (
                                            [name] => testz
                                            [percent] => 63
                                            [problems] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [name] => การจราจร
                                                            [percent] => 100
                                                        )

                                                    [1] => Array
                                                        (
                                                            [name] => ของแพง
                                                            [percent] => 25
                                                        )

                                                )

                                        )

                                )

                            [percent] => 63
                        )
                 )
         )

foreach ($arrProblems as $survey => $surveyNode){
		foreach ($surveyNode["gzone"] as $GzoneNode){
			foreach ($GzoneNode["zone"] as $zoneNode){
				echo 'dddd: '.sizeof($zoneNode["problems"]).'<br>';
			}
		}
	}