Question

<?php
  class test{
      private $k=array();

      public function __set($a,$p){
           $this->k[$a]=$p;
      }

      public function __get($a){
            return $this->k[$a];
      }

 }

 $t=new test();
 $t->M="10"; // this works.
 $t->P=array(); // this works.
 $t->P=array("def"=>"456"); // this works.

 $t->P["abc"]="123"; // this doesn't work

 var_dump($t->P);
?>

是否有可能这样做$ t-> P [“ abc”] =“ 123”还是有其他类似的方法？

预先感谢

Answer 1

以下是带有解释的解决方案：

theCB

输出：

<?php
class test{
  private $k=array();

  public function __set($a,$p){
       var_dump( "SET: $a=$p" );
       $this->k[$a]=$p;
  }

  public function &__get($a) { // add "&" here to return reference instead of value!
    var_dump( "GET: " . $a );
    return $this->k[$a];
  }

}

$t=new test();
$t->P['abc3'] = "1233"; // triggers GET // gets set by reference
var_dump( $t->P['abc3'] ); // triggers GET for $t->P then returns value of(<ref>)['abc3']

var_dump($t->P); // triggers GET

PHP类对象错误

1 个答案: