1,如何将数组arr1转化成arr2?
arr1 = [
<code>['tracking1','abc@qq.com','80'], ['tracking1','abc@qq.com','50'], ['tracking2','efg@qq.com','60'], ['tracking2','efg@qq.com','30'],</code>
];
arr2 = [
<code>['tracking1','abc@qq.com',['80','50']], ['tracking2','efg@qq.com',['60','30']],</code>
];
1,如何将数组arr1转化成arr2?
arr1 = [
<code>['tracking1','abc@qq.com','80'], ['tracking1','abc@qq.com','50'], ['tracking2','efg@qq.com','60'], ['tracking2','efg@qq.com','30'],</code>
];
arr2 = [
<code>['tracking1','abc@qq.com',['80','50']], ['tracking2','efg@qq.com',['60','30']],</code>
];
思路很简单，就是把数组的第一和第一列的值作为一个唯一key写入，感觉楼上代码有点多，简洁代码如下
<code>$arr1 = [
['tracking1','abc@qq.com','80'],
['tracking1','abc@qq.com','50'],
['tracking2','efg@qq.com','60'],
['tracking2','efg@qq.com','30'],
];
$arr2 = [];
foreach ($arr1 as $data) {
list($account,$mail,$val) = $data;
isset($arr2[$account.$mail]) || $arr2[$account.$mail]=[$account,$mail,[]];
array_push($arr2[$account.$mail][2],$val);
}
$arr2 = array_values($arr2);
var_dump($arr2);</code>
我给个思路，先遍历判断arr1[0]是否一样，一样就往一个新数组中插入，在这基础判断[1]是否相同，相同就插入值，不同则合并成一个数组，以此类推
<code>$arr = [['tracking1','abc@qq.com','80'],
['tracking1','abc@qq.com','50'],
['tracking2','efg@qq.com','60'],
['tracking2','efg@qq.com','30']];
$finalArr = [[[]]];
$mailArr =[];
foreach ($arr as $k=>$v){
$mailKey = array_search($v[1],$mailArr);
if($mailKey!==false){
array_push($finalArr[$mailKey][2],$v[2]);
}else{
$finalArr[$k] = $v;
$finalArr[$k][2] = [$v[2]];
$mailArr[$k]=$v[1];
}
}
$finalArr = array_values($finalArr);
var_dump($finalArr);
</code>14行功能代码，不要太简单。
说下我的思路，题主这个数组，拆分开其实就是两个部分，每个数组里的v0、v1值，和v2值。
<code>$new = array();
$flag = 1;
foreach ($arr as $key => $value) {
$newss[$value[0].'-'.$value[1]][] = $value[2]; //取出重复小标0 1的值
$news = array($value[0], $value[1]);
foreach ($new as $k => $v) {
if(!array_diff($v,$news )) { //如果
$flag = 2;
break;
}
}
if($flag == 1) {
$new[] = array($value[0], $value[1]);
}
$flag = 1;
}
foreach ($new as $key => $value) {
$new[$key][2] = $newss[$value[0].'-'.$value[1]];
}
var_dump($new);exit;</code>
<code> $arr1 = [
['tracking1','abc@qq.com','80'],
['tracking1','abc@qq.com','50'],
['tracking2','efg@qq.com','60'],
['tracking2','efg@qq.com','30'],
];
$arr2 = [
['tracking1','abc@qq.com',['80','50']],
['tracking2','efg@qq.com',['60','30']],
];
define("CUSTOM_SEPA", "_");
function t($a0){
$r = [];
$res = [];
foreach($a0 as $v){
$r[$v[0].CUSTOM_SEPA.$v[1]][] = $v[2];
}
foreach($r as $k=>$v){
$s = explode(CUSTOM_SEPA, $k);
$s[] = $v;
$res[] = $s;
}
return $res;
}
$res = t($arr1);
print_r($res == $arr2);</code>
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