Php 在数组中计算数组中的元素数

我有个问题。我试图使用主数组中数组内的特定元素来计算数组中的数组键

public function index()
{   
            $user=User::all();
            $lead=Lead::all();
            $role=Role::all();
            $lead=DB::table('lead')
                 ->select(DB::raw('lead.id','users.number','users.username', 'lead.leadid','lead.first_name', 'lead.last_name','lead.email' ,count('lead.email') ))
                 ->where ('lead.email', '>', 1)
                 ->groupBy('lead.email')
                 ->leftJoin('users', 'users.number', '=', 'lead.assign')
                 ->get();
                $user=DB::table('users')->select('users.number','users.username')->get();

                echo "<pre>";
                print_r($lead);
                die();
}

---

我想使用电子邮件计算元素，并检查元素在数组中出现的次数。我试图使用数组计数值，但不太确定如何使用它。提前感谢

计算有多少元素具有相同的电子邮件，我猜您必须手动完成…

<?php

    $lead=DB::table('lead')
    ->select(['lead.id','users.number','users.username', 'lead.leadid','lead.first_name', 'lead.last_name','lead.email'])
     ->select( DB::raw( "count('lead.email') as total") )
     ->where ('lead.email', '>', 1)
     ->groupBy('lead.email')
     ->leftJoin('users', 'users.number', '=', 'lead.assign')
     ->get();

$emails=array（）；
foreach（$lineNumber=>$line的潜在客户）{
$email=$line['email']；
如果（数组\键\存在（$email，$email）{
$email[“$email”]++；
}否则{
$email[“$email”]=1；
}
}
回声“；
Array
(
[0] => Array
    (
        [id] => 63
        [number] => 3
        [username] => shankar
        [leadid] => zcrm_125720000016007771
        [first_name] => 
        [last_name] => Amoah Owusu Richmond
        [email] => ramoahhowusu50@gmail.com
    )

[1] => Array
    (
        [id] => 64
        [number] => 3
        [username] => shankar
        [leadid] => zcrm_125720000016007733
        [first_name] => Deus
        [last_name] => mathew
        [email] => mathewdeus@gmail.com
    )

[2] => Array
    (
        [id] => 65
        [number] => 2
        [username] => james
        [leadid] => zcrm_125720000016007737
        [first_name] => bari
        [last_name] => safi
        [email] => barisafi57@gmail.com
    )

[3] => Array
    (
        [id] => 66
        [number] => 11
        [username] => nishupandey
        [leadid] => zcrm_125720000016007741
        [first_name] => Noorahmad
        [last_name] => Noor
        [email] => noorahmad.noor81@gmail.com
    )

[4] => Array
    (
        [id] => 67
        [number] => 12
        [username] => ravi123
        [leadid] => zcrm_125720000016007747
        [first_name] => munsanje
        [last_name] => nakeempa
        [email] => mnakeempa@yahoo.com
    )

[5] => Array
    (
        [id] => 68
        [number] => 8
        [username] => veerkishor
        [leadid] => zcrm_125720000016007751
        [first_name] => Noorahmad
        [last_name] => Noor
        [email] => noorahmad.noor71@gmail.com
    )

[6] => Array
    (
        [id] => 69
        [number] => 13
        [username] => rahul
        [leadid] => zcrm_125720000016007755
        [first_name] => painad
        [last_name] => sherzad
        [email] => painda12sherzad@gmail.com
    )
)

打印（电子邮件）；

---

这就是您想要的吗？

如果要计算大数组中具有特定属性的数组的数量，则需要循环所有外部数组元素并检查内部数组元素。

尝试以下操作：

在DB:：raw中，您需要在引号中加上“count”。否则，您只需运行php count（如sizeof）

只需使用您想要计数的Count（$array）
希望它能起作用
你能解释一下什么不起作用吗？也许
$email
不是一个字符串，必须添加双引号（我编辑答案）它起作用了，但事实证明很难通过编程指向某个元素…实际上需要使用另一个关于DB:：select的答案
<?php

    $lead=DB::table('lead')
    ->select(['lead.id','users.number','users.username', 'lead.leadid','lead.first_name', 'lead.last_name','lead.email'])
     ->select( DB::raw( "count('lead.email') as total") )
     ->where ('lead.email', '>', 1)
     ->groupBy('lead.email')
     ->leftJoin('users', 'users.number', '=', 'lead.assign')
     ->get();