我有两个类似的数组
$a1= array(
array('a'=>1,'b'=>2, 'c'=>3), // similar to $a2[0]
array('a'=>3,'b'=>4, 'c'=>5), // similar to $a2[1]
array('a'=>9,'b'=>6, 'c'=>9)
);
$a2= array(
array('a'=>1,'b'=>2, 'c'=>3),
array('a'=>3,'b'=>4, 'c'=>5),
array('a'=>5,'b'=>6, 'c'=>7),
array('a'=>11,'b'=>4, 'c'=>13),
array('a'=>14,'b'=>6, 'c'=>3)
);
我想要一个没有像那样的公共值的结果数组
$arrayResult= array(
array('a'=>9,'b'=>6, 'c'=>9),// from $a1[3]
array('a'=>5,'b'=>6, 'c'=>7),// from $a2[2]
array('a'=>11,'b'=>4, 'c'=>13),// from $a2[3]
array('a'=>14,'b'=>6, 'c'=>3)// from $a2[4]
);
我试过array_udiff，也试过分离函数，但我无法得到正确的结果。
嗯，快速解决方案，未优化
$result = array();
foreach($a1 as $va1) {
$found = false;
foreach($a2 as $va2) {
$x = array_diff($va1, $va2);
if (empty($x)) {
$found = true;
}
}
if (!$found) {
$result[] = $va1;
}
}
foreach($a2 as $va2) {
$found = false;
foreach($a1 as $va1) {
$x = array_diff($va2, $va1);
if (empty($x)) {
$found = true;
}
}
if (!$found) {
$result[] = $va2;
}
}
var_dump($result);
编辑：有点优化（之前发现的未设置值）：
$a1= array(
array('a'=>1,'b'=>2, 'c'=>3), // similar to $a2[0]
array('a'=>3,'b'=>4, 'c'=>5), // similar to $a2[1]
array('a'=>9,'b'=>6, 'c'=>9)
);
$a2= array(
array('a'=>1,'b'=>2, 'c'=>3),
array('a'=>3,'b'=>4, 'c'=>5),
array('a'=>5,'b'=>6, 'c'=>7),
array('a'=>11,'b'=>4, 'c'=>13),
array('a'=>14,'b'=>6, 'c'=>3)
);
$i=0;
$result = array();
foreach($a1 as $ka1 => $va1) {
$found = false;
foreach($a2 as $ka2 => $va2) {
$i++;
$x = array_diff($va1, $va2);
if (empty($x)) {
$found = true;
unset($a2[$ka2], $a1[$ka1]);
}
}
if (!$found) {
$result[] = $va1;
}
}
foreach($a2 as $ka2 => $va2) {
$found = false;
foreach($a1 as $ka1 => $va1) {
$i++;
$x = array_diff($va2, $va1);
if (empty($x)) {
unset($a2[$ka2], $a1[$ka1]);
$found = true;
}
}
if (!$found) {
$result[] = $va2;
}
}
var_dump($result);echo $i;
function check_diff_multi($array1, $array2){
$result = array();
foreach($array1 as $key => $val) {
if(isset($array2[$key])){
if(is_array($val) && is_array($array2[$key])){
$result[$key] = check_diff_multi($val, $array2[$key]);
}
} else {
$result[$key] = $val;
}
}
return $result;
}
//call this function
check_diff_multi($a1,$a2);