for循环 php 增加数组维数_PHP数组在循环中创建多维数组
我有一個關聯的多維數組,如下所示
$data = array();
$data = Array (
[0] => Array ( [class] => 1styear [branch] => IT [Exam] => SEM1 [student name] => Alex [Bio] => Good Boy )
[1] => Array ( [class] => 2ndyear [branch] => Finance [Exam] => SEM1 [student name] => Mark [Bio] => Intelligent )
[2] => Array ( [class] => 2ndyear [branch] => IT [Exam] => SEM1 [student name] => Shaun [Bio] => Football Player )
[3] => Array ( [class] => 1styear [branch] => Finance [Exam] => SEM2 [student name] => Mike [Bio] => Sport Player )
[4] => Array ( [class] => 1styear [branch] => IT [Exam] => SEM2 [student name] => Martin [Bio] => Smart )
[5] => Array ( [class] => 1styear [branch] => IT [Exam] => SEM1 [student name] => Philip [Bio] => Programmer )
)
我需要根據上面數組中的類似元素創建新數組.意味著我必須創建陣列組.例如,類元素具有重復的第1年和第2年的值.所以它會產生一系列獨特的元素.然后再次類是父數組和內部類數組應該有基于分支的數組和內部的檢查數組和里面的數組應該有學生名和生物的關聯數組.
所以基本上數組應該是這樣的
array(
"1styear" => array(
"IT" => array(
"SEM1" => array(
array(
"student name" => "Alex",
"Bio" => "Good Boy"
),
array(
"student name" => "Philip",
"Bio" => "Programmer"
)
),
"SEM2" => array(
array(
"student name" => "Martin",
"Bio" => "Smart"
)
)
)
),
"2ndyear" => array(
"Finance" => array(
"SEM1" => array(
array(
"student name" => "Mark",
"Bio" => "Intelligent"
)
),
"SEM2" => array(
array(
"student name" => "Mike",
"Bio" => "Sport Player"
)
)
)
)
);
為了使基于類的組我喜歡下面哪個工作正常,但如何在其中創建數組
$classgroup = array();
foreach($data as $inarray){
$classgroup[$inarray['class']][] = $inarray;
}
$classarray = array();
foreach($classgroup as $key => $value){
echo $key; // output is 1styear and secondyear
create array like above
}
– – – – – – – – – – – – – – – – -編輯 – – – – – – – – ——————
從下面的循環
foreach($data as $array){
$grouped[$array["class"]][$array["branch"]][$array["Exam"]][]=array("student name"=>$array["student name"],"Bio"=>$array["Bio"]);
}
我得到了預期的o / p
但如果我需要另一個這樣的o / p
預計o / p
array(
'1styear' =>
array (
0 =>
array(
'Exam' => 'SEM1',
'branch' =>
array (
0 => 'IT'
),
),
1 =>
array(
'Exam' => 'SEM2',
'branch' =>
array (
0 => 'IT'
),
),
),
'2ndyear' =>
array (
0 =>
array(
'Exam' => 'SEM1',
'branch' =>
array (
0 => 'Finance',
),
),
1 =>
array(
'Exam' => 'SEM2',
'branch' =>
array (
0 => 'Finance'
),
)
),
)
我嘗試了循環但沒有按預期獲得o / p
foreach($data as $array){
$grouped[$array["class"]][]=array("Exam"=>$array["Exam"],"branch"=>$array["branch"]);
}
最佳答案 循環中的單行！
foreach($data as $array){
$grouped[$array["class"]][$array["branch"]][$array["Exam"]][]=array("student name"=>$array["student name"],"Bio"=>$array["Bio"]);
}
$groups產生：
Array(
[1styear] => Array(
[IT] => Array(
[SEM1] => array(
[0] => array(
[student name] => Alex,
[Bio] => Good Boy
),
[1] => array(
[student name] => Philip,
[Bio] => Programmer
)
),
[SEM2] => array(
[0] => array(
[student name] => Martin,
[Bio] => Smart
)
)
),
[Finance] => array(
[SEM2] => array(
[0] => array(
[student name] => Mike,
[Bio] => Sport Player
)
)
)
),
[2ndyear] => array(
[Finance] => array(
[SEM1] => array(
[0] => array(
[student name] => Mark,
[Bio] => Intelligent
)
)
),
[IT] => array(
[SEM1] => array(
[0] => array(
[student name] => Shaun,
[Bio] => Football Player
)
)
)
)
)
你的后續案例,更有趣/更具挑戰性.我不得不把我不經常玩的一些功能搞得粉碎.看一下這個：
$data = array (
array ( "class"=>"1styear","branch"=>"IT","Exam"=>"SEM1","student name"=>"Alex","Bio"=>"Good Boy"),
array ( "class"=>"2ndyear","branch"=>"Finance","Exam"=>"SEM1","student name"=>"Mark","Bio"=>"Intelligent" ),
array ( "class"=>"2ndyear", "branch"=>"IT","Exam"=>"SEM1","student name"=>"Shaun","Bio"=>"Football Player" ),
array ( "class"=>"1styear","branch"=>"Finance","Exam"=>"SEM2","student name"=>"Mike","Bio"=>"Sport Player" ),
array ( "class"=>"1styear","branch"=>"IT","Exam"=>"SEM2","student name"=>"Martin","Bio"=>"Smart"),
array ( "class"=>"1styear","branch"=>"IT","Exam"=>"SEM1","student name"=>"Philip","Bio"=>"Programmer" )
);
$class_keys=array_unique(array_column($data,"class")); // create array of unique class values
$Exam_keys=array_unique(array_column($data,"Exam")); // create array of unique Exam values
foreach($class_keys as $class_key){
$i=0; // "class" subarray index
foreach($Exam_keys as $Exam_key){
$q=array("class"=>$class_key,"Exam"=>$Exam_key); // this array can have 1 or more pairs
// create an array only of rows where $q's key-value pairs exist
$qualifying_array=array_filter(
$data,
function($val)use($q){
if(count(array_intersect_assoc($val,$q))==count($q)){ // total pairs found = total pairs sought
return $val;
}
},
ARRAY_FILTER_USE_BOTH
);
foreach($qualifying_array as $qa){ // push appropriate values into array
$grouped2[$class_key][$i]["Exam"]=$qa["Exam"];
$grouped2[$class_key][$i]["branch"][]=$qa["branch"];
}
if(isset($grouped2[$class_key][$i]["branch"])){ // ensure no duplicate values in "branch" subarray
$grouped2[$class_key][$i]["branch"]=array_unique($grouped2[$class_key][$i]["branch"]);
}
++$i; // increment the index for each "class" subarray
}
}
echo "
";print_r($grouped2);
echo "
";輸出與您請求的輸出不同,但我認為您只是展示它應該是什么樣子.如果這不太對,請告訴我.
array(
[1styear]=>array(
[0]=>array(
[Exam]=>SEM1
[branch]=>array(
[0]=>IT
)
),
[1]=>array(
[Exam]=>SEM2
[branch]=>array(
[0]=>Finance,
[1]=>IT
)
)
),
[2ndyear]=>array(
[0]=>array(
[Exam]=>SEM1
[branch]=>array(
[0]=>Finance,
[1]=>IT
)
)
)
)
總結
以上是生活随笔為你收集整理的for循环 php 增加数组维数_PHP数组在循环中创建多维数组的全部內容，希望文章能夠幫你解決所遇到的問題。
- 上一篇： centos系统中mysql密码_Cen
- 下一篇： php实现按时间排序_按时间排序的问题？