Question

是否可以像在MySQL中一样在PHP数组中进行搜索。

例如：我有array

array(
  'mark@test.com'=> `Mark Mian`,
  'jhon@test.com'=> `John jack`,
  'logon@test.com'=> `Bob Logon`,
  'Stela@test.com'=> `Stela Josh`,
  'json@test.com'=> `Json Josh`
  'bobby@test.com'=> `Bob Mark`
)

我会做这种搜索，

例如：如果我搜索Mark，则应该返回此

'mark@test.com'=＆gt; `Mark Mian

如果我搜索Bob它应该返回

'bobby@test.com'=＆GT; Bob Mark

'logon@test.com'=＆GT; Bob Logon，

如果我仅搜索a，则应该返回包含a的元素，例如：

'mark@test.com'=＆GT; Mark Mian，

'jhon@test.com'=＆GT; John jack，

'Stela@test.com'=＆GT; Stela Josh，

'bobby@test.com'=＆GT; Bob Mark

注意：搜索应按键或值

Answer 1

    private void button1_Click(object sender, EventArgs e)
    {
        dataGridView1.Rows.Clear();
        dataGridView1.Visible = true;
        btn_Add.Visible = true;
        button1.Visible = false;
        label1.Visible = true;
        label2.Visible = true;

        textBox2.Visible = true;


        booklist = new List<Book>();
        booklist.Add(new Book("001", "Lord Of the Rings", "J. R. R. Tolkien", "5", "0 Books Avaible"));
        booklist.Add(new Book("002", "The Hobbit", "J. R. R. Tolkien", "5", "2 Books Avaible"));
        booklist.Add(new Book("003", "The Lion, the Witch and the Wardrobe", "C. S. Lewis", "5", "1 Books Avaible"));
        booklist.Add(new Book("004", "The Alchemist", "Paulo Coelho", "5", "3 Books Avaible"));
        booklist.Add(new Book("005", "Think and Grow Rich", "Napoleon Hill", "5", "4 Books Avaible"));
        booklist.Add(new Book("006", "The Da Vinci Code", "Dan Brown", "5", "3 Books Avaible"));
        booklist.Add(new Book("007", "And Then There Were None", "Agatha Christie", "5", "5 Books Avaible"));
        booklist.Add(new Book("008", "She: A History of Adventure", "H. Rider Haggard", "5", "0 Books Avaible"));
        booklist.Add(new Book("009", "Dream of the Red Chamber", "Cao Xueqin", "5", "5 Books Avaible"));
        booklist.Add(new Book("010", "The Catcher in the Rye", "J. D. Salinger", "5", "5 Books Avaible"));
        booklist.Add(new Book("011", "The Little Prince", "Antoine de Saint-Exupéry", "5", "5 Books Avaible"));
        booklist.Add(new Book("012", "Lolita", "Vladimir Nabokov", "5", "3 Books Avaible"));
        booklist.Add(new Book("013", "The Name of the Rose", "Umberto Eco", "5", "1 Books Abaible"));
        booklist.Add(new Book("014", "Black Beauty", "Anna Sewell", "5", "2 Books Avaible"));
        booklist.Add(new Book("015", "Charlotte's Web", "E.B. White", "5", "0 Books Avaible"));
        booklist.Add(new Book("016", "Harry Potter and the Goblet of Fire", "J. K. Rowling", "5", "2 Books Avaible"));
        booklist.Add(new Book("017", "Harry Potter and the Prisoner of Azkaban", "J. K. Rowling", "5", "1 Books Avaible"));
        booklist.Add(new Book("018", "Harry Potter and the Chamber of Secrets", "J. K. Rowling", "5", "4 Books Avaible"));
        booklist.Add(new Book("019", "Harry Potter and the Half-Blood Prince", "J. K. Rowling", "5", "3 Books Avaible"));
        booklist.Add(new Book("020", "Harry Potter and the Philosopher's Stone", "J. K. Rowling", "5", "3 Books Avaible"));
        booklist.Add(new Book("021", "Harry Potter and the Order of the Phoenix", "J. K. Rowling", "5", "4 Books Avaible"));
        booklist.Add(new Book("022", "Harry Potter and the Deathly Hallows", "J. K. Rowling", "5", "3 Books Avaible"));
        booklist.Add(new Book("023", "", "", "", ""));
        booklist.Add(new Book("024", "", "", "", ""));
        booklist.Add(new Book("025", "", "", "", ""));
        booklist.Add(new Book("026", "", "", "", ""));
        dataGridView1.Columns.Clear();

        dataGridView1.AutoGenerateColumns = true;
        dataGridView1.DataSource = booklist;


    }

    private void btn_Add_Click(object sender, EventArgs e)
    {
        btn_Add.Visible = false;
        button3.Visible = true;
        dataGridView1.Visible = true;
        dataGridView1.AllowUserToAddRows = true;


    }



    private void textBox2_TextChanged(object sender, EventArgs e)
    {
        var textbox = (TextBox)sender;

        if (string.IsNullOrEmpty(textbox.Text))
        {
            dataGridView1.DataSource = booklist;
            return;
        }

        var search = booklist.Where(b => b.Name.Contains(textbox.Text)).ToList();
        dataGridView1.DataSource = search;

        Console.WriteLine(e.ToString()); 
    }

<强> Fiddle

如果您想要搜索键和值两者，如果您只想搜索值，请删除键部分。

Answer 2

这是一个preg_grep解决方案，应该更像MySQL中的WHERE REGEXP 'PATTERN'。我修改了以在数组键中搜索模式，并为其添加了Daniel Klein's preg_grep_keys function，其中应该与具有非数字键的数组一起使用。如果密钥是数字的，只需使用array_merge preg_grep('~Mark~i', $arr);来查找包含mark或Mark等所有数组元素。）

preg_grep solution
将一个或多个数组的元素合并在一起，以便将一个值的值附加到前一个数组的末尾。它返回结果数组。 如果输入数组具有相同的字符串键，则该键的后一个值将覆盖前一个键。但是，如果数组包含数字键，则后面的值不会覆盖原始值，但是会被追加。

function preg_grep_keys_values($pattern, $input, $flags = 0) {
    return array_merge(
      array_intersect_key($input, array_flip(preg_grep($pattern, array_keys($input), $flags))),
      preg_grep($pattern, $input, $flags)
   );
}

$a = array(
  'mark@test.by.com'=> "Mark Mian lv",
  'jhon@test.lv.com'=> "John jack lv",
  'logon@test.en.com'=> "Bob Logon",
  'Stela@test.es.com'=> "Stela Josh",
  'json@test.es.com'=> "Json Josh",
  'bobby@test.lv.com'=> "Bob Mark"
);

$r = preg_grep_keys_values('~lv~i', $a);
print_r($r);

请参阅array_merge

上面的代码首先在键中搜索lv（不区分大小写），然后在值中搜索，然后将结果合并到1个数组中。因此，结果是：

[jhon@test.lv.com] => John jack lv
[bobby@test.lv.com] => Bob Mark
[mark@test.by.com] => Mark Mian lv

Answer 3

一种简单的方法是使用array_filter

如果你想要正则表达式，那就行了

$regex = '~test~';
$result = array_filter($data, function($item) use ($regex) {
    return preg_match($regex, $item);
});

或者只是一个简单的包含搜索

$search = 'test';
$result = array_filter($data, function($item) use ($search) {
    return stristr($value, $search);
});

如果必须同时搜索 - 键和值，可以将参数ARRAY_FILTER_USE_BOTH附加到array_filter。

$search = 'test';
$result = array_filter($data, function($item, $key) use ($search) {
    return stristr($value, $search) || stristr($key, $search);
}, ARRAY_FILTER_USE_BOTH);

最后，你可以将array_filter与preg_grep结合起来，一次搜索两个。

$search = '~bob~i';
$result = array_filter($data, function() use ($search) {
    return count(preg_grep($search, func_get_args()));
}, ARRAY_FILTER_USE_BOTH);

Answer 4

您想要过滤数组，请使用专为此设计的[ContentType(DisplayName = "ImageFile", GUID = "0b6fe917-9aa6-4e7b-9fae-1ff21a39a614", Description = "")] [MediaDescriptor(ExtensionString = "jpg,jpeg,jpe,ico,gif,bmp,png")] public class ImageFile : MediaData { public virtual string Copyright { get; set; } }。

如果只搜索文字字符串，则不需要使用正则表达式：

array_filter

如果您希望能够使用正则表达式进行过滤：

$needle = 'bob';

$result = array_filter($data, function ($k, $v) use ($needle) {
    return stripos($k, $needle) !== false || stripos($v, $needle) !== false;
}, ARRAY_FILTER_USE_BOTH);

Answer 5

   $search = "Mark"

  $array = array(
  'mark@test.com'=> `Mark Mian`,
 'jhon@test.com'=> `John jack`,
 'logon@test.com'=> `Bob Logon`,
 'Stela@test.com'=> `Stela Josh`,
 'json@test.com'=> `Json Josh`
'bobby@test.com'=> `Bob Mark`
 )
       foreach ($array as $key => $value) {
         if (stristr($value, $search) == '') {
        //not found
        }else{
      //found
       }

这是搜索任何不区分大小写且快速的子字符串的最佳方法

就像在mysql中一样

例如：

从名称=“％Mark％”的表中选择*

如何在PHP数组中搜索，类似于MySQL Like％var％search

5 个答案: