关于PHP数组迭代器的使用方法实例

array(3) {
  ["words_result"]=>
  array(36) {
    [0]=>
    array(1) {
      ["words"]=>
      string(8) "FA-6000A"
    }
    [1]=>
    array(1) {
      ["words"]=>
      string(10) "2022-09-16"
    }
    [2]=>
    array(1) {
      ["words"]=>
      string(7) "04：00"
    }
    [3]=>
    array(1) {
      ["words"]=>
      string(8) "SHOP：B"
    }
    [4]=>
    array(1) {
      ["words"]=>
      string(7) "NAME："
    }
    [5]=>
    array(1) {
      ["words"]=>
      string(3) "<R>"
    }
    [6]=>
    array(1) {
      ["words"]=>
      string(1) "C"
    }
    [7]=>
    array(1) {
      ["words"]=>
      string(1) "A"
    }
    [8]=>
    array(1) {
      ["words"]=>
      string(5) "-1.50"
    }
    [9]=>
    array(1) {
      ["words"]=>
      string(5) "-0.25"
    }
    [10]=>
    array(1) {
      ["words"]=>
      string(3) "131"
    }
    [11]=>
    array(1) {
      ["words"]=>
      string(5) "-1.50"
    }
    [12]=>
    array(1) {
      ["words"]=>
      string(7) "-0，25"
    }
    [13]=>
    array(1) {
      ["words"]=>
      string(3) "122"
    }
    [14]=>
    array(1) {
      ["words"]=>
      string(7) "-1，50"
    }
    [15]=>
    array(1) {
      ["words"]=>
      string(7) "-0，25"
    }
    [16]=>
    array(1) {
      ["words"]=>
      string(3) "114"
    }
    [17]=>
    array(1) {
      ["words"]=>
      string(5) "-1.50"
    }
    [18]=>
    array(1) {
      ["words"]=>
      string(7) "-0，25"
    }
    [19]=>
    array(1) {
      ["words"]=>
      string(3) "122"
    }
    [20]=>
    array(1) {
      ["words"]=>
      string(3) "<L>"
    }
    [21]=>
    array(1) {
      ["words"]=>
      string(1) "C"
    }
    [22]=>
    array(1) {
      ["words"]=>
      string(1) "A"
    }
    [23]=>
    array(1) {
      ["words"]=>
      string(5) "-1.50"
    }
    [24]=>
    array(1) {
      ["words"]=>
      string(4) "+0.0"
    }
    [25]=>
    array(1) {
      ["words"]=>
      string(5) "-1.25"
    }
    [26]=>
    array(1) {
      ["words"]=>
      string(7) "-0，25"
    }
    [27]=>
    array(1) {
      ["words"]=>
      string(3) "158"
    }
    [28]=>
    array(1) {
      ["words"]=>
      string(5) "-1.00"
    }
    [29]=>
    array(1) {
      ["words"]=>
      string(5) "-0.25"
    }
    [30]=>
    array(1) {
      ["words"]=>
      string(3) "100"
    }
    [31]=>
    array(1) {
      ["words"]=>
      string(1) "*"
    }
    [32]=>
    array(1) {
      ["words"]=>
      string(5) "-1.25"
    }
    [33]=>
    array(1) {
      ["words"]=>
      string(4) "+0.0"
    }
    [34]=>
    array(1) {
      ["words"]=>
      string(5) "U0=12"
    }
    [35]=>
    array(1) {
      ["words"]=>
      string(5) "PD=58"
    }
  }
  ["words_result_num"]=>
  int(36)
  ["log_id"]=>
  int(1455742838110100386)
}

$usefulNumList = [];
$wordsResult = new \ArrayIterator($wordsResult);//初始化数组迭代器,传入数组变量
foreach($wordsResult as $item){
	$tempWords = $item['words'];
    if(strpos($tempWords, '*') !== false){
	    if($tempWords === '*'){//有时候,*号会单独识别成一个字符串,有时候会和后面的数字识别到一起,如果是单独识别出来的,要把指针向后挪一位
        	$wordsResult->next();//实现方法是: 数组变更名->next()方法
        }
       //注意,调用了next()方法后,不能再用$item去取数组元素值,要用current()方法才能取到"下一个值"
       array_push($usefulNumList, $this->getCleanNum($wordsResult->current()['words']));
       $wordsResult->next();
       array_push($usefulNumList, $this->getCleanNum($wordsResult->current()['words']));
    }
}