只有通过引用传递变量 [英] Only variables should be passed by reference

问题描述

我有一个类：

  class Validator {
 private $ validationArray; 
 private $ washedValues; 
 
 public function __construct（$ arg1，$ arg2 = NULL）{
 if（empty（$ arg2））{
 $ this-> LoadValidatorByName（$ arg1）; 
} else {
 $ this-> LoadValidatorFromLeadType（$ arg1，$ arg2）; 
} 
} 
 
私有函数LoadValidatorFromLeadType（$ lead_type，$ vocabulary）{
 $ ErrorReporter = new ErrorReporter; 
 $ taxonomy_term = reset（taxonomy_get_term_by_name（$ lead_type，$ vocabulary））; 
 
 ...一些更多的东西
  

函数taxonomy_get_term_by_name是一个Drupal函数但我遇到的问题是一个PHP。

当这种方法被调用时，PHP抱怨：

 严格警告：只有变量应该通过引用传递Validator-> LoadValidatorFromLeadType（）（[路径到我的文件]的第32行）
  / pre> 
 
 
第32行是：
  $ taxonomy_term = reset（taxonomy_get_term_by_name（$ lead_type，$ vocabulary））; 
  
我看了错误，我确定我知道这是什么意思，我无法理解导致此警告的代码有什么问题。
解决方案
重置正在等待变量引用。你传递一个函数结果... 
  $ taxonomy_term = taxonomy_get_term_by_name（$ lead_type，$ vocabulary）; 
 $ taxonomy_term = reset（$ taxonomy_term）; 
  
 
I have a class:
class Validator {
    private $validationArray;
    private $cleanedValues;

    public function __construct($arg1, $arg2=NULL) {
        if(empty($arg2)) {
            $this->LoadValidatorByName($arg1);
        } else {
            $this->LoadValidatorFromLeadType($arg1, $arg2);
        }
    }

    private function LoadValidatorFromLeadType($lead_type, $vocabulary) {
            $ErrorReporter = new ErrorReporter;
            $taxonomy_term = reset(taxonomy_get_term_by_name($lead_type, $vocabulary));

...some more stuff
The function taxonomy_get_term_by_name is a Drupal function but the issue I am experiencing is a PHP one.

When this method is called PHP complains with:
Strict warning: Only variables should be passed by reference in Validator->LoadValidatorFromLeadType() (line 32 of [path to my file])
Line 32 is ths line with:
$taxonomy_term = reset(taxonomy_get_term_by_name($lead_type, $vocabulary));
I've looked in to the error and I'm pretty sure I know what it means, but I can't understand what is wrong with my code that causes this warning.
解决方案
reset is waiting for a variable reference. You are passing it a function result...
$taxonomy_term = taxonomy_get_term_by_name($lead_type, $vocabulary);
$taxonomy_term = reset($taxonomy_term );


                        
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