Question

我的php变量中有一个多维数组，如

这里，数组的长度可以很大。现在我想从我的数组中只获取邮政编码值，如

Array(
     [0]=>Array
          ( 
             [0] => Array
                 (
                    [attribute] => postcode
                    [operator] => >
                    [value] => 00999
                  )
             [1] => Array
                 (
                    [attribute] => postcode
                    [operator] => <
                    [value] => 96200
                  )
          )
     [1]=>Array
          ( 
             [0] => Array
                 (
                    [attribute] => postcode
                    [operator] => >=
                    [value] => 97000
                  )
             [1] => Array
                 (
                    [attribute] => postcode
                    [operator] => <
                    [value] => 99500
                  )
          )
    )

我有多个循环和条件来执行此操作。

foreach( $conditions['conditions'] as $_conditions ):
    foreach( $_conditions['conditions'] as $_condition ):
        $counter++;
        $loopCounter++; 
        foreach($_condition['conditions'] as $condition ):
            if($condition['attribute'] == 'postcode'){ $postcodes[$counter][$condition['operator']] = $condition['value']; }
            $loopCounter++;
        endforeach;
    endforeach;
endforeach;

这有效，但我认为这不是一种正确的方法。我还尝试使用array_map()和array_column()以及其他一些方法，但只有当我们有一个级别的子数组时它们才有效。 基本上我只想从这个数组中获取邮政编码数据而不使用多级循环。 非常感谢任何帮助。

Answer 1

必填：提取标识为＆＃39;邮政编码的某些leaf nodes＆＃39;来自作为数组持有的tree。

有一个问题：

1）输入数组＆＃39; root＆＃39;是一个关联数组（＆＃39;条件＆＃39;）而不是一系列条件＆＃39;像树的其余部分一样。这解释了为什么我使用数组（$ sourceData）而不是$ sourceData来开始处理。

Demonstration at evel.in Source code at Pastebin.com

扫描数组的函数

/**
 * function recurse the array looking for post codes...
 *
 * @param array $conditions
 * @param array $postcodes by reference
 * @return void
 */
function getPostcodes($conditions, &$postcodes) {

    $currentPostcodes = array();

    foreach ($conditions as $condition) {

        if (!empty($condition['conditions'])) { // recurse...
           getPostcodes($condition['conditions'], $postcodes);
           continue; // process next entry...
        }

        // extract the postcodes...  
        if (   isset($condition['attribute'])
             && $condition['attribute']  === 'postcode') {
            $currentPostcodes[] = $condition;
        }
    }

    if (!empty($currentPostcodes)) {
        $postcodes[] = $currentPostcodes;
    }
    return;
}

运行它：

// output in here
$postcodes = array();

// note: input needs to be an array that looks like a `condition_combine`

getPostcodes(array($a),  $postcodes);

echo 'output start', PHP_EOL;
print_r($postcodes);
echo 'output end', PHP_EOL;
exit;

输出：

output start
Array
(
    [0] => Array
        (
            [0] => Array
                (
                    [type] => salesrule/rule_condition_address
                    [attribute] => postcode
                    [id] => lvl__2--0
                    [operator] => >
                    [value] => 00999
                    [is_value_processed] => 
                )

            [1] => Array
                (
                    [type] => salesrule/rule_condition_address
                    [attribute] => postcode
                    [id] => lvl__2--1
                    [operator] => <
                    [value] => 96200
                    [is_value_processed] => 
                )

        )

    [1] => Array
        (
            [0] => Array
                (
                    [type] => salesrule/rule_condition_address
                    [attribute] => postcode
                    [operator] => >=
                    [id] => lvl__2--3
                    [value] => 97000
                    [is_value_processed] => 
                )

            [1] => Array
                (
                    [type] => salesrule/rule_condition_address
                    [attribute] => postcode
                    [id] => lvl__2--4
                    [operator] => <
                    [value] => 99500
                    [is_value_processed] => 
                )
        )
)
output end

如何通过多维数组中的键值获取Array数据？

1 个答案:

扫描数组的函数

运行它：

输出：