[英]Find and delete all elements of $key in multidimensional array
Im trying to search and delete multiple values in a multidimensional array. 我正在尝试搜索和删除多维数组中的多个值。 I have tried to kind of mix it with a multiDim Search. 我试图将其与multiDim搜索混合。 I pass the array &$haystack
by reference. 我通过引用传递了数组&$haystack
。
This should probably go in a do while
loop, but as it stands it will go in a endless loop. 这可能应该在do while
循环中进行,但就目前而言,它将是一个无限循环。
But nothing happens 但是什么也没发生
$b = array(0 => array("patient" => 123, "condition" => "abc"),
1 => array("patient" => 987, "condition" => "xyz"),
2 => array("patient" => 123, "condition" => "zzz"));
function in_array_r($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);
Expected Result 预期结果
Array
(
[1] => Array
(
[patient] => 987
[condition] => xyz
)
)
You don't need to pass by reference since you're not trying to change a value in an array. 您不需要通过引用传递,因为您没有尝试更改数组中的值。 But you're on the right track! 但是您走在正确的轨道上! Here's a working example: 这是一个工作示例:
$patients = array(0 => array("patient" => 123, "condition" => "abc"),
1 => array("patient" => 987, "condition" => "xyz"),
2 => array("patient" => 123, "condition" => "zzz"));
function remove_patient($patients, $number) {
foreach ($patients as $key => $patient) {
if ($patient['patient'] == $number) {
unset($patients[$key]);
}
}
return $patients;
}
And the example results: 结果示例:
var_dump(remove_patient($patients, 123));
array(1) {
[1]=>
array(2) {
["patient"]=>
int(987)
["condition"]=>
string(3) "xyz"
}
}
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;
123 : 123 :
echo (in_array_r(123, $b, $count) ? "found (".$count ." times)" : "not found") . "\n";
Output: 输出:
found (2 times)
1123 : 1123 :
echo (in_array_r(1123, $b, $count) ? "found (".$count ." times)" : "not found") . "\n";
Output: 输出:
not found
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