Php 如何访问其值的ID数组

我正在分析其他人的代码，在运行时调试类变量的类型和值时发现了这些代码：

echo print_r($this->_out);

Array
(
    [id] => -1
    [fieldErrors] => Array
        (
        )

    [error] => 
    [data] => Array
        (
        )

    [row] => Array
        (
            [DT_RowId] => row_177
            [id] => 177
            [last_name] => sdfdsf
            [first_name] => dsf
            [homeaddr] => sdfdsfsdfdsfdsfdsfdsf
            [email] => s@jj.com
            [officeaddr] => wwwwwwwwwwwwwwwwwwwwwwww
            [mobile] => 11111111
            [age] => 11
            [chargeamt] => 11
            [start_date] => 11/11/2011
        )

)
1{"row":{"DT_RowId":"row_177","id":"177","last_name":"sdfdsf","first_name":"dsf","homeaddr":"sdfdsfsdfdsfdsfdsfdsf","email":"s@jj.com","officeaddr":"wwwwwwwwwwwwwwwwwwwwwwww","mobile":"11111111","age":"11","chargeamt":"11","start_date":"11\/11\/2011"}}

我是PHP新手，想知道如何访问[id]=>177值，即值177

我尝试了很多方法

$this->_out['row']['id'][0]

$this->_out['row']['id']

结果如下：

1{"row":{"DT_RowId":"row_177","id":"177","last_name":"sssss","first_name":"ss","homeaddr":"sssssssssssssssssssss","email":"ss@ww.com","officeaddr":"sssssssssssssssssssssssssssss","mobile":"11111111","age":"11","chargeamt":"11","start_date":"01\/01\/2001"}}

177{"row":{"DT_RowId":"row_177","id":"177","last_name":"sssss","first_name":"ss","homeaddr":"sssssssssssssssssssss","email":"ss@ww.com","officeaddr":"sssssssssssssssssssssssssssss","mobile":"11111111","age":"11","chargeamt":"11","start_date":"01\/01\/2001"}}

当

我尝试了很多方法

$this->_out['row']['id'][0]

$this->_out['row']['id']

结果如下：

1{"row":{"DT_RowId":"row_177","id":"177","last_name":"sssss","first_name":"ss","homeaddr":"sssssssssssssssssssss","email":"ss@ww.com","officeaddr":"sssssssssssssssssssssssssssss","mobile":"11111111","age":"11","chargeamt":"11","start_date":"01\/01\/2001"}}

177{"row":{"DT_RowId":"row_177","id":"177","last_name":"sssss","first_name":"ss","homeaddr":"sssssssssssssssssssss","email":"ss@ww.com","officeaddr":"sssssssssssssssssssssssssssss","mobile":"11111111","age":"11","chargeamt":"11","start_date":"01\/01\/2001"}}

和其他人，但它只是没有给我预期的

---

如何根据需要访问该值？

打印结果是一个包含更多数组的数组。因此，首先您必须找到主数组的索引，该索引用您要查找的值表示子数组。然后您必须使用此索引来访问子数组值。

您做得对<代码>$this->\u out['row']['id']将返回所需的结果（检查为什么您也会得到不属于

打印（$this->\u out）

的JSON字符串）

这将返回结果

177

：

$this->_out['row']['id'];

由于在PHP中，您可以以数组的形式访问字符串字符，这将返回字符串中的第一个字符（即

1

）：

这将抛出错误，因为没有这样的索引（字符串长度是3，所以最后一个索引是2）：

---

$this->\u out['row']['id']

看起来它输出的是正确的

177

-您确定使用该命令后没有直接执行其他输出吗？

$this->\u out['row']['id']

返回结果。抱歉，这是firebug控制台的输出。它是一个web应用程序。请尝试在代码中搜索json_encode，即echo。这会给您额外的结果。