Laravel collect妙用

需求

     $arr = array( [ 'name' => "shawn", "email" => "[e-mail]", "company" => "QQ" ], [ 'name' => "nicole", "email" => "[e-mail]", "company" => "360" ], [ 'name' => "test", "email" => "[e-mail]", "company" => "baidu" ] ); //轉化成 $lookup = array( "shawn" => "[e-mail]", "nicole" => "[e-mail]", "test" =>"[e-mail]" );

方法一:

$lookup = collect($arr)->pluck("email","name")->toarray();

方法二:

$lookup  =  collect($arr)->reduce(function($lookup,$item){ $lookup[$item["name"]] = $item["email"]; return $lookup; },[]); //reduce方法調用的是 array_reduce()方法 //array_reduce($arr,callback,initial);