PHP的foreach从数组

Question

我有访问数组中的值麻烦值，数组看起来像这样，

Array 
(
    [0] => Array 
     (
      [id] => 1661 
      [code] => 849651318 
      [job_status] => 4 
      [looking_for] => Lorem ipsum 
      [keywords_education] => Derby University 
      [sector_id_csv] => 10,21,9,22,26 
      [last_job_title_1] => Programmer 
      [last_job_employer_1] => HBOS 
      [city] => Bury 
      [expected_salary_level] => LEVEL_2 
      [education_level] => COLLEGE 
      [job_looking_for] => 
      [is_contract] => Y 
      [is_permanent] => N 
      [is_temporary] => Y 
     ) 

) 
Array 
(
    [0] => Array 
     (
      [id] => 402 
      [code] => 849650059 
      [job_status] => 3 
      [looking_for] => Lorem ipsum 
      [keywords_education] => Paris College 
      [sector_id_csv] => 27,22,19,21,12 
      [last_job_title_1] => Programmer 
      [last_job_employer_1] => HSBC 
      [city] => Bury 
      [expected_salary_level] => LEVEL_2 
      [education_level] => COLLEGE 
      [job_looking_for] => 
      [is_contract] => N 
      [is_permanent] => Y 
      [is_temporary] => Y 
     ) 

) 
Array 
(
    [0] => Array 
     (
      [id] => 1653 
      [code] => 849651310 
      [job_status] => 3 
      [looking_for] => Lorem ipsum 
      [keywords_education] => Crewe University 
      [sector_id_csv] => 27,15,19,21,24 
      [last_job_title_1] => Programmer 
      [last_job_employer_1] => ICI 
      [city] => Bury 
      [expected_salary_level] => LEVEL_2 
      [education_level] => UNIVERSITY 
      [job_looking_for] => 
      [is_contract] => N 
      [is_permanent] => Y 
      [is_temporary] => Y 
     ) 

) 

我试图获取值的时候，我曾尝试做以下，

foreach ($result as $rslt) { 
    echo $rslt->id; 
} 

我也试过，

foreach ($result as $rslt) { 
    $rslt['id']; 
} 

但这一切作品，我不知道为什么，谁能帮助？

Answer 1

要指出的一些东西，希望澄清任何混淆，在你的第一个例子：

foreach ($result as $rslt) { 
    echo $rslt->id; 
} 

箭头操作符（->）被滥用。它通常用于调用类对象上的方法，在您的情况下，$rslt将是类对象，而id将是一种方法，但情况并非如此。

在你的第二个例子，

foreach ($result as $rslt) { 
    $rslt['id']; 
} 

你几乎击中了要害，但你已经忘了打电话给echo或print输出值到屏幕上。

此外，您$result阵列有一个子数组中的索引0，使需要改变

$rslt['id']; 

到，与echo或print语句一起。

echo $rslt[0]['id']; 

Answer 2

第二个是正确的，但你错过了一个echo或print

echo $rslt['id']; 

从示例代码，你给它不清楚是什么$result是。
如果$result涵盖所有列出的阵列，你将不得不做

foreach($result as $rslt) { 
    echo $rslt[0]['id']; 
} 

更多参考：

• http://de3.php.net/manual/en/function.echo.php
• http://de3.php.net/manual/en/function.print.php
• http://de3.php.net/manual/en/language.types.array.php

Answer 3

我敢肯定有人会p在接下来的0.3秒内收到答案，所以我只是试着用你的方法来帮助你。显然你知道如何使用print_r（或var_dump）。你有没有尝试在你的数组中使用$ rslt？您似乎很难理解$ rslt是什么。