Question

我试图在多维数组中搜索和删除多个值。我试图将它与multiDim Search混合使用。我通过引用传递数组> in_words(10) => "zeroone"。

这可能应该在&$haystack循环中进行，但是现在它会循环进行。

但没有任何反应

do while

预期结果

$b = array(0 => array("patient" => 123, "condition" => "abc"), 
           1 => array("patient" => 987, "condition" => "xyz"),
           2 => array("patient" => 123, "condition" => "zzz"));



function in_array_r($needle, &$haystack, $strict = false) {
    foreach ($haystack as $item) {
        if (($strict ? $item === $needle : $item == $needle) || (is_array($item) && in_array_r($needle, $item, $strict))) {
          unset($haystack["patient"]);            
          return true;
        }
    }

    return false;
}


echo in_array_r(123, $b) ? 'found' : 'not found';

Print_r($b);

Answer 1

由于您没有尝试更改数组中的值，因此无需通过引用传递。但是你走在正确的轨道上！这是一个有效的例子：

$patients = array(0 => array("patient" => 123, "condition" => "abc"), 
           1 => array("patient" => 987, "condition" => "xyz"),
           2 => array("patient" => 123, "condition" => "zzz"));

function remove_patient($patients, $number) {
    foreach ($patients as $key => $patient) {
        if ($patient['patient'] == $number) {
            unset($patients[$key]);
        }
    }
    return $patients;
}

示例结果：

var_dump(remove_patient($patients, 123));

array(1) {
  [1]=>
  array(2) {
    ["patient"]=>
    int(987)
    ["condition"]=>
    string(3) "xyz"
  }
}

Answer 2

function in_array_r($needle, &$haystack, &$count = 0)
{
    foreach($haystack as $index => $data)
    {
        if(is_array($data))
        {
            foreach($data as $key => $value)
            {
                if(is_array($value))
                    in_array_r($needle, $value, $count);
                else
                {
                    if($value === $needle)
                    {
                        unset($haystack[$key]);
                        $count++;
                    }
                }
            }
        }
    }

    return $count > 0;
}

$count = 0;

<强> 123 ：

echo (in_array_r(123, $b, $count) ? "found (".$count ." times)" : "not found") . "\n";

输出：

found (2 times)

<强> 1123 ：

echo (in_array_r(1123, $b, $count) ? "found (".$count ." times)" : "not found") . "\n";

输出：

not found

在多维数组中查找并删除$ key的所有元素

2 个答案: