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php如何删除多维数组

php删除多维数组的方法:首先创建一个PHP示例文件;然后通过unsetMultiKeys方法删除复杂的多维数组里面的指定键值对;最后查看运行结果即可。

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php删除多维数组里面的值

在手册里面发现,改造后变成了一个函数,可以删除复杂的多维数组里面的制定键值对!

<?php
$arr = [
    'test' => 'value',
    'level_one' => [
   'level_two' => [
  'level_three' => [
 'replace_this_array' => [
'special_key' => 'replacement_value',
'key_one' => 'testing',
'key_two' => 'value',
'four' => 'another value',
 ],
  ],
  'ordinary_key' => 'value',
   ],
    ],
];
$unset = array('special_key', 'ordinary_key', 'four');
echo "<pre>";
print_r(unsetMultiKeys($unset, $arr));
print_r($arr);
echo "</pre>";
exit;
function unsetMultiKeys($unset, $array) {
    $arrayIterator = new \RecursiveArrayIterator($array);
    $recursiveIterator = new \RecursiveIteratorIterator($arrayIterator, \RecursiveIteratorIterator::SELF_FIRST);
    foreach ($recursiveIterator as $key => $value) {
   foreach ($unset as $v) {
  if (is_array($value) && array_key_exists($v, $value)) {
 // 删除不要的值
 unset($value[$v]);
 // Get the current depth and traverse back up the tree, saving the modifications
 $currentDepth = $recursiveIterator->getDepth();
 for ($subDepth = $currentDepth; $subDepth >= 0; $subDepth--) {
// Get the current level iterator
$subIterator = $recursiveIterator->getSubIterator($subDepth);
// If we are on the level we want to change, use the replacements ($value) other wise set the key to the parent iterators value
$subIterator->offsetSet($subIterator->key(), ($subDepth === $currentDepth ? $value : $recursiveIterator->getSubIterator(($subDepth + 1))->getArrayCopy()));
 }
  }
   }
    }
    return $recursiveIterator->getArrayCopy();
}

运行结果:

改变多维数组里面的键值对

以上就是php如何删除多维数组的详细内容!

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