PHP Manual Learning iterator Iterator

 
  pos = 0;} #定义指针置0 rewindpublic Function Rewind () {echo __method__, "
"; $this->pos=0;} #定义valid method Public Function valid () {#判断是否可行echo __method__, "
"If (Isset ($this->arr[$this->pos]) {return isset ($this->arr[$this->pos]);}} #获取当前的值 currentpublic function current () {echo __method__, "
"; return $this->arr[$this->pos];} #获取当前的键值 keypublic Function key () {echo __method__, "
"; return $this->pos;} #指针下移函数public function Next () {echo __method__, "
"; + + $this->pos;}} #实例化对象 $test = new Myiterator (), #遍历对象foreach ($test as $key + = $val) {var_dump ($key, $val); Echo '
 
  ';}

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