如何从 mysql php 中的两个表中搜索

Question

I have a search box in my PHP file.我的 PHP 文件中有一个搜索框。 but its searches from only one table name "countries" but I have another table "continent" I want my search box to get results from both tables "countries" & "continent".但它只从一个表名“国家”进行搜索，但我有另一个表“大陆”我希望我的搜索框从两个表“国家”和“大陆”中获取结果。 currently, it looks like this[my search box][1]目前，它看起来像这样[我的搜索框][1]

 <?php /* Attempt MySQL server connection. Assuming you are running MySQL server with default setting (user 'root' with no password) */ $link = mysqli_connect("localhost", "root", "", "test"); // Check connection if($link === false){ die("ERROR: Could not connect. ". mysqli_connect_error()); } if(isset($_REQUEST["term"])){ // Prepare a select statement $sql = "SELECT * FROM countries WHERE name LIKE?"; if($stmt = mysqli_prepare($link, $sql)){ // Bind variables to the prepared statement as parameters mysqli_stmt_bind_param($stmt, "s", $param_term); // Set parameters $param_term = $_REQUEST["term"]. '%'; // Attempt to execute the prepared statement if(mysqli_stmt_execute($stmt)){ $result = mysqli_stmt_get_result($stmt); // Check number of rows in the result set if(mysqli_num_rows($result) > 0){ // Fetch result rows as an associative array while($row = mysqli_fetch_array($result, MYSQLI_ASSOC)){ echo '<img src="'.$row['image'].' "width="85px" height="85px" >'; echo '<p><a href="deteles.php?ID='. $row['id'].'" target="_blank">'. $row['name']. '</a></p>'; } } else{ echo "<p>No matches found</p>"; } } else{ echo "ERROR: Could not able to execute $sql. ". mysqli_error($link); } } // Close statement mysqli_stmt_close($stmt); } // close connection mysqli_close($link); ?>

and this is my tables[table1][2] [table3][3]这是我的表[table1][2] [table3][3]

 <:DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>PHP Live MySQL Database Search</title> <style type="text/css"> body{ font-family, Arail; sans-serif. } /* Formatting search box */:search-box{ width; 100%: position; relative: display; inline-block: font-size; 14px. }:search-box input[type="text"]{ height; 32px: padding; 5px 10px: border; 1px solid #CCCCCC: font-size; 14px. }:result{ position; absolute: z-index; 999: top; 100%: left; 0: overflow; auto. },search-box input[type="text"]. :result{ width; 100%: box-sizing; border-box. } /* Formatting result items */:result p{ margin; 0: padding; 7px 10px: border; 1px solid #CCCCCC: margin-top; -60px: cursor; pointer: margin-left; 94px. }:result p:hover{ background; #f2f2f2. }:result img{ float; left: float; unset: margin-top; 30px. }:result pa{ text-decoration; none: } </style> <script src="https.//code.jquery.com/jquery-1.12.4.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ $('.search-box input[type="text"]'),on("keyup input". function(){ /* Get input value on change */ var inputVal = $(this);val(). var resultDropdown = $(this).siblings(";result"). if(inputVal.length){ $.get("backend-search,php": {term. inputVal}).done(function(data){ // Display the returned data in browser resultDropdown;html(data); }). } else{ resultDropdown;empty(); } }). // Set search input value on click of result item $(document),on("click". ",result p". function(){ $(this).parents(".search-box").find('input[type="text"]').val($(this);text()). $(this).parent(".result");empty(); }); }). </script> </head> <body> <div class="search-box"> <input type="text" autocomplete="off" placeholder="Search country..." /> <div class="result"></div> </div> </body> </html>

These are my two PHP files.这是我的两个 PHP 文件。

Answer 1

You can use UNION.您可以使用联合。 The only condition is column count should match in both the queries.唯一的条件是列数应该在两个查询中匹配。 Here is an example这是一个例子

SELECT id, name, 'country' FROM countries WHERE name LIKE '%America%' 
UNION
SELECT id, name, 'continent' FROM continents WHERE name LIKE '%America%';

如何从 mysql php 中的两个表中搜索

问题描述

1 个解决方案

解决方案1
0 已采纳 2020-12-25 19:08:35

如何从 mysql php 中的两个表中搜索

问题描述

1 个解决方案

解决方案1 0 已采纳 2020-12-25 19:08:35

解决方案1
0 已采纳 2020-12-25 19:08:35