使用传递的数组递归替换第一个数组的元素 array_replace_recursive
$base = array('citrus' => array( "orange") , 'berries' => array("blackberry", "raspberry"), );
$replacements = array('citrus' => array('pineapple'), 'berries' => array('blueberry'));
$basket = array_replace_recursive($base, $replacements);
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带索引检查计算数组的交集，用回调函数比较索引 array_intersect_uassoc
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "GREEN", "B" => "brown", "yellow", "red");
print_r(array_intersect_uassoc($array1, $array2, "strcasecmp"));
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递归地合并一个或多个数组 array_merge_recursive
$ar1 = array("color" => array("favorite" => "red"), 5);\
$ar2 = array(10, "color" => array("favorite" => "green", "blue"));\
$result = array_merge_recursive($ar1, $ar2);
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使用传递的数组递归替换第一个数组的元素 array_replace_recursive
$base = array('citrus' => array( "orange") , 'berries' => array("blackberry", "raspberry"), );
$replacements = array('citrus' => array('pineapple'), 'berries' => array('blueberry'));
$basket = array_replace_recursive($base, $replacements);
print_r($basket);\
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将一个线性数组转换为一个树，或者多维数组
function array_stack (&$a, $p = '@parent', $c = '@children')
{
$l = $t = array();
foreach ($a AS $key => $val):
if (!$val[$p]) $t[$key] =& $l[$key];
else $l[$val[$p]][$c][$key] =& $l[$key];
$l[$key] = (array)$l[$key] + $val;
endforeach;
return $a = array('tree' => $t, 'leaf' => $l);
}
$node = array();
$node[1] = array('@parent' => 0, 'title' => 'I am node 1.');
$node[2] = array('@parent' => 1, 'title' => 'I am node 2.');
$node[3] = array('@parent' => 2, 'title' => 'I am node 3.');
$node[4] = array('@parent' => 1, 'title' => 'I am node 4.');
$node[5] = array('@parent' => 4, 'title' => 'I am node 5.');
print_r(array_stack($node));
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