如何在PHP

Question

我正在寻找niftier检查multidim。数组$ a匹配multidim中的模式（键/值）。 array $ b（换句话说，检查$ b是$ a的子数组）。我的递归遍历代码附带了跟踪帮助，准备粘贴在空脚本中。

需要使用其所选属性的mdim数组来过滤mdim产品数组。

任何简化都表示赞赏。

<pre>
<?php
$a = array (
        "a" => "1",
        "b" => "red",
        "c" => array(
            "ca" => "ca123",            
            "cb" => "cb123",
        ),
        "d" => array(
            "da" => "da123",            
            "db" => "db123",
            "dc" => array(
                "dca" => "dca123",          
                "dcb" => "dcb123"           
            ),

        ),
);

$b = array(
    "b" => "red",
    "c" => array(
        "ca" => "ca123",            
    ),
    "d" => array(
        "dc" => array(
            "dca" => "dca123",          
        ),

    ),
);

function is_subarray(&$needle = array(), &$haystack = array()) 
{
    if (!$needle || !$haystack || !is_array($needle) || !is_array($haystack)) return FALSE;

    echo __FUNCTION__ . " ENTRY ****************************************************************<br />";
    echo "Needle: " . print_r($needle, TRUE) . "<br />Haystack: " . print_r($haystack, TRUE) . "<br />";

    foreach ($needle as $needle_key => $needle_value) {
        echo "Analyzing needle pair: " . print_r(array($needle_key => $needle_value), TRUE) . "<br />";
        echo "and haystack: " . print_r($haystack, TRUE) . "<br />";// . print_r($needle_value, true) . "<br />";
        if (array_key_exists($needle_key, $haystack) && (gettype($needle_value) == gettype($haystack[$needle_key]))) {
            // Keys matches and values type matches
            echo "Keys matches and values type matches<br />";
            if (is_array($needle_value)) {
                // Values are arrays - going deeper
                echo "Values are arrays - going deeper<br />";
                if (!is_subarray($needle_value, $haystack[$needle_key])) return FALSE;
            } else if ($needle_value != $haystack[$needle_key]) {
                // Values don't match - this is the end 
                echo "Values don't match - this is the end<br />";
                return FALSE;
            } else {
                // Values do match
                echo "Values do match<br />";
                //$result = true;
            }
        } else {
            // No key found - this is the end
            echo "No key found - this is the end<br />";
            return FALSE;
        }
    }

    echo __FUNCTION__ . "**************************************************************** EXIT<br />";

    return TRUE;
}

echo "<br />Match: " . ((is_subarray($b, $a)) ? "YES" : "NO");
?>
</pre>