爲什麼我的用戶名被截斷？

Question

在下面的數組中，您會看到userId = 16。但是，當我運行foreach循環時，它將返回userId = 1。爲什麼它返回1而不是16？

Array 
(
    [userId] => 16 
    [positionTitle] => Array 
     (
      [0] => j1 
      [1] => j2 
     ) 

    [company] => Array 
     (
      [0] => c1 
      [1] => c2 
     ) 

    [jobDescription] => Array 
     (
      [0] => d1 
      [1] => d2 
     ) 

    [startDate] => Array 
     (
      [0] => 03/01/2013 
      [1] => 03/03/2013 
     ) 

    [endDate] => Array 
     (
      [0] => 03/02/2013 
      [1] => 03/04/2013 
     ) 

    [jobCity] => Array 
     (
      [0] => city1 
      [1] => city2 
     ) 

    [jobState] => Array 
     (
      [0] => state1 
      [1] => state2 
     ) 

) 

循環代碼：

foreach($updates as $key => $value){ 
    echo $key . " " . $value[0] . "<br/>"; 
} 

輸出示例：

userId 1 
positionTitle j1 
company c1 
jobDescription d1 
startDate 03/01/2013 
endDate 03/02/2013 
jobCity city1 
jobState state1 

Answer 1

你的問題是在這裏：

foreach($updates as $key => $value){ 
    echo $key . " " . $value[0] . "<br/>"; 
} 

特殊照顧輸出的的第一個字符（零元）字符串「16」。

更改您的代碼來這得到想要的效果：不管你告訴它做

foreach($updates as $key => $value){ 
    if(!is_array($value)) 
     echo $key . " " . $value . "<br/>"; 
    else 
     echo $key . " " . $value[0] . "<br/>"; 
}