php - Iterate over object properties with keys from second array -

i call foreach loop on object , iterate on $this->_values, keys present in $this->_allowedfields.

1) $this->_values can contain data not $this->_allowedfields, should excluded foreach.

2) $this->_allowedfields will contain keys not in $this->_values, still need include step in foreach loop.

how can achieve this?

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i have set class implement iterator , can call foreach loop on object's _values array, so:

foreach($object $key => $value) {     // stuff } 

solution

found solution myself below when implementing iterator interface.

public function rewind() {     reset($this->_allowedfields); }  public function current() {     $key = current($this->_allowedfields);     return $this->_values[$key]; }  public function key() {     $key = current($this->_allowedfields);     return $key; }  public function next() {     next($this->_allowedfields);     $key = current($this->_allowedfields);     return $this->$this->_values[$key]; }  public function valid() {     $key = current($this->_allowedfields);     $var = ($key !== null && $key !== false);     return $var; } 

if understood u correct, than: can't check values or fields? it's simple!

1) way

foreach($objects $key => $object){ foreach($object->_allowfields $allowfield){     if(isset($object->_values[$allowfield])){         echo $object->_values[$allowfield];     }else{         echo "sorry, field empty";     } } 

}

2) way #2

foreach($objects $key => $object){ $allowedfields = $object->_allowfields; foreach($object->_values $key => $value){     if(in_array($key, $allowedfields)){         // field allowed     }else{         // field not allowed     } }}