php删除了多维数组的办法:起首创立一个PHP示例文件;而后经过unsetMultiKeys办法删除了复杂的多维数组外面的指定键值对;最初查看运转后果便可。
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php删除了多维数组外面的值
正在手册外面发现,革新后变为了一个函数,能够删除了复杂的多维数组外面的制订键值对!
<?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, $value)) { // 删除了没有要的值 unset($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(); }
运转后果:
扭转多维数组外面的键值对
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