这是你如何使用 Query\Builder ，但首先需要附加一些注释：

  //用户可以意外提供双重空间，或者有目的地提供：
 $ string ='john doe'; 

 //所以爆炸你得到这个：
 explode（''，$ string）; 
数组（
 0 =>'john'，
 1 =>''，
 2 =>'doe'
）

 //现在，如果你使用LIKE'％''value''％'，你会得到这样的：
从表中选择*，其名称如'％john％'或名称像'%%'或。 .. 
 

说，你显然不能依靠 explode 因为在上述情况下你会得到所有的行。

所以，这是你应该做的：

  $ string ='john doe'; 

 // split on 1+ whitespace&忽略空（例如，尾随空格）
 $ searchValues = preg_split（'/ \s + /'，$ string，-1，PREG_SPLIT_NO_EMPTY）; 

 $ users = User :: where（function（$ q）use（$ searchValues）{
 foreach（$ searchValues as $ value）{
 $ q-> orWhere （'name'，'like'，'％{$ value}％）; 
} 
}） - > get（）; 
 

中有的关闭，因为它是一个很好的做法，将你的或子句包含在括号中。例如，如果您的用户模型使用 SoftDeletingScope ，则不会执行我的建议，您的整个查询将被弄乱。

I am new to laravel query builder, I want to search multiple words entered in an input field for example if I type "jhon doe" I want to get any column that contains jhon or doe

I have seen/tried solutions using php MySQL but can't able to adapt to query builder

//1. exploding the space between the keywords 

//2. using foreach apend the query together

$query = "select * from users where";

$keywordRaw = "jhon doe";
$keywords = explode(' ', $keywordRaw );
foreach ($keywords as $keyword){
$query.= " first_name LIKE '%" + $keyword +"%' OR ";
}

how do I do this using query builder

this is what i have so far, what is the proper way of doing this,

$keywordRaw = "jhon doe";
//how do I explode this words and append them along with their appropriate query
$users = User::select('users.*')
->where('first_name', 'LIKE', '%'.$keywordRaw.'%')

please help, thanks in advance

This is how you do it with Query\Builder, but first some additional notes:

// user can provide double space by accident, or on purpose:
$string = 'john  doe';

// so with explode you get this:
explode(' ', $string);
array(
  0 => 'john',
  1 => '',
  2 => 'doe'
)

// Now if you go with LIKE '%'.value.'%', you get this:
select * from table where name like '%john%' or name like '%%' or ...

That said, you obviously can't rely on explode because in the above case you would get all the rows.

So, this is what you should do:

$string = 'john  doe';

// split on 1+ whitespace & ignore empty (eg. trailing space)
$searchValues = preg_split('/\s+/', $string, -1, PREG_SPLIT_NO_EMPTY); 

$users = User::where(function ($q) use ($searchValues) {
  foreach ($searchValues as $value) {
    $q->orWhere('name', 'like', "%{$value}%");
  }
})->get();

There is closure in the where because it is a good practice to wrap your or where clauses in parentheses. For example if your User model used SoftDeletingScope and you would not do what I suggested, your whole query would be messed up.