二维数组只选择目标字段
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2022-06-02 10:00:49
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我现在二维数组中有1千多条数据,每条数据中字段都有冗余,我现在每条数据中只需要我红框框出来的3条目标字段就好啦,其他的都不要,
我现在知道要用双重的foreach循环来做,但是一直做不出来,还请大家帮忙解答一下,谢谢
图如下:
回复内容:
我现在二维数组中有1千多条数据,每条数据中字段都有冗余,我现在每条数据中只需要我红框框出来的3条目标字段就好啦,其他的都不要,
我现在知道要用双重的foreach循环来做,但是一直做不出来,还请大家帮忙解答一下,谢谢
图如下:
题主你是想把二位数组里你想要的字段取出来吗, 不用两次foreach
啊
mt_rand(1, 2000),
'good_name' => 'goodname' . $i,
'xxxxxxx' => 'xxxxx',
'wadadad' => 'adwawdadwad',
'remake' => ''
];
}
//---构造测试数据 ---
$data = [];
foreach ($arry as $key => $value) {
$data[] = [
'platform_good_id' => $value['platform_good_id'],
'good_name' => $value['good_name'],
'remake' => $value['remake'],
];
}
var_dump($data);
如下:
array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),
"b"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),
"c"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),
"d"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"),
"e"=>array("a"=>"a","b"=>"b","c"=>"c","d"=>"d","e"=>"e"));
$result = array();
foreach ($arr as $k => $v){
$result[$k] = array();
foreach($v as $key => $value){
if($key === "b" || $key === "d" || $key === "e"){
$result[$k][$key] = $value;
}
}
}
print_r($arr);
print("
");
print_r($result);
?>
以上代码是提取其中键值为 b d e
的元素然后组成一个新的数组。
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